Bosch KT400 User manual

VCI User Manual

Bosch Automotive Diagnostics Equipment (Shenzhen) Limited
| VCI | 3VCI | 3 | 3 en
1. Symbols used 4
1.1 In the documentation 4
1.1.1 Warning notices - Structure and meaning
4
1.1.2 Symbols in this documentation 4
1.2 On the product 4
2. Important notes 4
2.1 User group 4
2.3 Obligation of contractor 6
3. Safety instructions 6
3.1 Risk of electric shocks 6
3.1.1 Low voltages, high voltages 6
3.1.2 High voltages in hybrid vehicles and elec-
tric vehicles as well as their high-voltage
components 7
3.2 Danger of acid burning 7
3.3 Danger of injury, Danger of crushing 8
3.4 Danger of burning 8
3.5 Danger of fire, Danger of explosion 9
3.6 Danger of asphyxiation 9
3.7 Noise 9
3.8 Danger of tripping 9
3.9 FCC Warning 10
3.10 Satety Warning 10
3.11 Using notes 11
3.12 Notes for operation of automobile ECU 11
4. Introduction to KT400 host 12
4.1 Host identifications 12
4.2 Diagnosis port 12
4.3 Connection Port 12
5. Equipment connection 12
5.1 Diagnostic connection 12
5.2 Selfcheck / upgrade connection 13
6. KT400 system settings 13
6.1 Auxiliary function 13
6.1.1 Language Settings 13
6.1.2 System selfcheck 13
6.1.3 VCI selfcheck 13
6.1.4 Touch calibration 14
6.1.5 Contrast adjustment 14
6.1.6 Time and date setting 14
6.1.7 Vehicle Logo Replacement 14
6.2 Network Setting 14
6.2.1 Network connection 14
6.2.2 Proxy Settings 15
6.3 Activation 15
6.4 Upgrade 15
6.4.1 Software Upgrade 15
6.4.2 VCI upgrade 15
6.4.3 System upgrade 16
6.4.4 Local upgrade 16
6.5 About equipment 16
6.5.1 System information 16
6.5.2 User information 16
6.5.3 VCI 16
7. Vehicle Diagnostic 16
7.1 Test Conditions 16
7.2 Power supply of host 16
7.3 Selecting a Method to Access the Diagnosis
System 17
7.3.1 Manual Selection 17
7.3.2 Brand Search 17
7.3.3 History Record 17
7.4 Diagnostic 17
7.4.1 Introduction to Main Interface of Diagno-
sis System 17
7.4.2 Reading Version Information 17
7.4.3 Reading DTC 18
7.4.4 Clearing DTC 18
7.4.5 Reading Data Stream 19
7.4.6 Travel Recorder 20
7.4.7 Playing Back Data Stream 21
7.4.8 Action Test 21
7.4.9 Advanced Functions 21
7.4.10 Audi special function 21
7.5 Other Functions Related to Diagnostic 23
7.5.1 Print 23
7.5.2 Image Browse 23
7.5.3 Screenshot 23
7.5.4 Help 24
7.5.5 Using small keyboard 24
7.6 Service Help 24
8. Service and Maintenance 24
8.1 Cleaning 24
8.2 Maintenance 24
8.2.1 Maintenance of touch screen 24
8.2.2 SD card maintenance 24
9. Technical Parameters 25
9.1 Host Parameters 25
10. FAQ 25
Contents

Bosch Automotive Diagnostics Equipment (Shenzhen) Limited
4 | VCI | Symbols useden
1. Symbols used
1.1 In the documentation
1.1.1 Warning notices - Structure and meaning
Warning notices indicate hazards and their consequen-
ces for the user or surrounding persons. Warning noti-
ces also describe the measures for preventing these
hazards. The signal word has a crucial importance. It
indicates the probability of occurrence and the severity
of the hazard in case of non-compliance:
Signal
word
Probability of
occurrence
Severity of danger if in-
structions not observed
DANGER Immediate impend-
ing danger
Death or severe injury
WARNING Possible impending
danger
Death or severe injury
CAUTION Possible dangerous
situation
Minor injury
Below you will see an example of the “Live parts”
warning notice by way of example, with the signal word
DANGER:
DANGER – Exposure of live parts on ope-
ning the VCI!
Risk of (fatal) injury or heart failure from elec-
tric shocks on contact with live components.
¶Work on electrical installations or equip-
ment is only to be performed by qualified
electricians or trained personnel under the
guidance and supervision of an electrician.
¶Disconnect VCI from the mains before
opening.
1.1.2 Symbols in this documentation
Sym-
bol
Designation Explanation
!Attention Warns about possible property damage.
iInformation Practical hints and other
useful information.
1.
2.
Multi-step
operation
Instruction consisting of several steps
eOne-step
operation
Instruction consisting of one step.
 Intermediate
result
An instruction produces a visible inter-
mediate result.
"Final result There is a visible final result on comple-
tion of the instruction.
1.2 On the product
!Observe all warning notices on products and ensure
they remain legible!
2. Important notes
Before start up, connecting and opera-
ting Bosch Automotive Diagnostics Equip-
ment (Shenzhen) Limited products it is
absolutely essential that the operating inst-
ructions/owner’s manual and, in particular, the safety
instructions are studied carefully. By doing so you can
eliminate any uncertainties in handling Bosch Automoti-
ve Diagnostics Equipment (Shenzhen) Limited products
and thus associated safety risks upfront; something
which is in the interests of your own safety and will ulti-
mately help avoid damage to the device. When a Bosch
Automotive Diagnostics Equipment (Shenzhen) Limited
product is handed over to another person, not only the
operating instructions but also the safety instructions
and information on its designated use must be handed
over to the person.
2.1 User group
The product may be used by skilled and instructed per-
sonnel only. Personnel scheduled to be trained, famili-
arized, instructed or to take part in a general training
course may only work with the product under the su-
pervision of an experienced person.
All work conducted on electrical and hydraulic de-
vices may be performed by persons with sufficient
knowledge and experience in the field of electrics and
hydraulics.
Children have to be supervised to ensure that they do
not play with the appliance.

Bosch Automotive Diagnostics Equipment (Shenzhen) Limited
Symbols used | VCI | 5VCI | 5 | 5 en
2.2 Agreement
By using the product you agree to the following regulations:
Declare
RRefer to packing list for detailed product configura-
tion;
RRefer to software for functions, pictures.
This product cannot use in:
Locations characterized by a separate power network,
in most cases supplied from a high- or medium-voltage
transformer, dedicated for the supply of installations
feeding manufacturing or similar plants with one or
more of the following conditions:
– frequent switching of heavy inductive or capacitive
loads;
– high currents and associated magnetic fields;
– presence of Industrial, Scientific and Medical (ISM)
apparatus (for example, welding machines).
The equipment complies with relevant requirements of
Directive 2004/108/EC for Electromagnetic compatibili-
ty (EMC) and Directive 2006/95/EC for Low Voltage.
Copyright
Software and data are the property of Bosch Automo-
tive Diagnostics Equipment (Shenzhen) Limited or its
suppliers and protected against copying by copyright
laws, international agreements and other national legal
regulations. Copying or selling of data and software or
any part thereof is impermissible and punishable; in
the event of any infringements Bosch Automotive Dia-
gnostics Equipment (Shenzhen) Limited reserves the
right to proceed with criminal prosecution and to claim
for damages.
Liability
All data in this program is based - where possible - on
manufacturer and importer details. Bosch Automotive
Diagnostics Equipment (Shenzhen) Limited does not
accept liability for the correctness and completeness of
software and data; liability for damage caused by faulty
software and data is ruled out. Whatever the event,
Bosch Automotive Diagnostics Equipment (Shenzhen)
Limited liability is restricted to the amount for which the
customer actually pays for this product. This disclaimer
of liability does not apply to damages caused by intent
or gross negligence on the part of Bosch Automotive
Diagnostics Equipment (Shenzhen) Limited.
Warranty
Any use of non-approved hardware and software will
result in a modification to our product and thus to exclu-
sion of any liability and warranty, even if the hardware or
software has in the meantime been removed or deleted.
No changes may be made to our products. Our products
may only be used in combination with original acces-
sories and original service parts. Failing to do so, will
render null and void all warranty claims.
This product may only be operated using Bosch Au-
tomotive Diagnostics Equipment (Shenzhen) Limited
approved operating systems. If the product is operated
using an operating system other than the approved one,
then our warranty obligation pursuant to our supply
conditions will be rendered null and void. Furthermore,
we will not be held liable for damage and consequential
damage incurred through the use of a non-approved
operating system.

Bosch Automotive Diagnostics Equipment (Shenzhen) Limited
6 | VCI | Safety instructionsen
2.3 Obligation of contractor
The contractor is obliged to ensure that all measures
geared towards the prevention of accidents, industrial
diseases, labor-related health risks are taken and mea-
sures towards making the workplace fit for people to
work in are carried out.
Specifications for electrical systems (BGV A3)
Electrical engineering in Germany is subject to the ac-
cident prevention regulations of the trade association
"Electrical Plant and Equipment as under BGV A3 (pre-
viously VBG 4)". In all other countries the applicable
national regulations or acts or decrees are to be adhe-
red to.
Basic rules
The contractor is bound to ensure that all electrical
equipment and operating material is set up, modified
and maintained by skilled electricians only or under the
guidance and supervision of a skilled electrician in ac-
cordance with electrical engineering principles.
Furthermore, the contractor must ensure that all elec-
trical equipment and operating material is operated in
keeping with electrical engineering principles.
If a piece of electrical equipment or operating material
is found to be defective, i.e. it does not or no longer
complies with electrical engineering principles, the con-
tractor must ensure that the fault is rectified immedia-
tely and, in the event that imminent danger exists, also
ensure that the electrical equipment or the electrical
operating material is not used.
Tests (taking Germany as an example):
RThe contractor must ensure that all electrical equip-
ment and operating material is tested to see if it is in
proper working order:
$Before starting up for the first time and, following
any modification or repair work, before a restart
by a skilled electrician or under the guidance and
supervision of a skilled electrician.
$At specific time intervals. Intervals are to be mea-
sured such that faults that must be expected to
occur, are determined in good time.
RThe test is to take the electrical engineering princip-
les relating hereto into account.
RUpon request of the trade association a test manual
is to be maintained into which specific entries are
made.
3. Safety instructions
3.1 Risk of electric shocks
3.1.1 Low voltages, high voltages
Hazardous voltages occur in both the lighting
system and the electrical system of a motor
vehicle. If contact is made with live parts (e.g.
with the ignition coil), there is a risk of electric
shock from flashover voltages caused by
damaged insulation (e.g. ignition cables which
have been attacked by martens). These apply
to the secondary and primary sides of the
ignition system, the wiring harness with con-
nectors, lighting system (Litronic) as well as
connection to the vehicle.
Safety measures:
¶Only connect to a properly grounded outlet.
¶Only the enclosed or a tested power supply cable is
to be used.
¶All extension cables must be fitted with shock-proof
contacts.
¶Any cables with damaged insulation must be repla-
ced.
¶First connect the lighting system and turn it on befo-
re connecting it to the vehicle.
¶Before switching on the ignition connect the (B-)
cable to engine ground or the battery (B–) terminal.
¶Always switch off the ignition before performing any
work on the electrical system of the vehicle. Inter-
vention includes, for instance, connection to the
vehicle, replacement of ignition system components,
removal of equipment (e. g. alternators), connection
of equipment to a test bench.
¶Wherever possible, tests and settings should always
be caried out with the ignition switched off and the
engine stationary.
¶If tests or settings are carried out with the ignition
switched on or the engine running, care must be
taken not to touch any live parts. This applies to all
connection cables and leads as well as to connec-
tions of equipment to test benches.
¶Test connections must always be made using sui-
table connectors (e.g. Bosch testing cable set or
vehicle-specific adapter cables).
¶Make sure that all test connections are properly
plugged in and secure.
¶Before disconnecting the (B-) cable from the engine
ground or battery (B–), switch off the ignition.
¶Never open the enclosures.

Bosch Automotive Diagnostics Equipment (Shenzhen) Limited
Safety instructions | VCI | 7VCI | 7 | 7 en
3.1.2 High voltages in hybrid vehicles and electric ve-
hicles as well as their high-voltage components
If high-voltage components or high-voltage
wires are inexpertly handled, there is a risk of
fatal injury from high voltages and the possib-
le transmission of current through the body.
¶Deenergization is only to be performed by
a qualified electrician, a qualified electri-
cian for specific tasks (hybrid) or a power
systems engineer.
¶Work on vehicles with high-voltage compo-
nents is only ever to be performed in a safe,
deenergized condition by persons with the
minimum qualification "Trained to perform
electrical work".
¶Even after deactivating the high-voltage
vehicle electrical system, the high-voltage
battery may still be live.
¶Operating condition cannot be established
from any running noise, as the electric ma-
chine is silent when stationary.
¶In gear positions "P" and "N" the engine or
electric motor may start spontaneously depen-
ding on the charge of the high-voltage battery.
Safety measures:
¶Never open or damage high-voltage batteries.
¶On accident vehicles, never touch high-voltage com-
ponents or exposed high-voltage wires before deacti-
vating the high-voltage vehicle electrical system.
¶Avoid contact with any high-voltage components
and high-voltage wires (orange sheathing) when in
operation.
¶Secure against unauthorized renewed start-up
(e.g. by means of a padlock).
¶Always wait at least 10 seconds after deactivating
the high-voltage system.
¶Visually inspect the high-voltage components and
high-voltage wires for damage. The power systems
engineer responsible should always be immediate-
ly notified of any irregularities, doubts or defects
found.
$High-voltage components must never exhibit signs
of external damage.
$The insulation of the high-voltage wiring must be
intact and undamaged.
$Watch out for any abnormal deformation of the
high-voltage wiring.
3.2 Danger of acid burning
When exhaust gas measurements are taken,
the sampling hoses which are used release a
highly caustic gas (hydrogen fluoride) that can
cause acid burning in the respiratory system
when heated to temperatures in excess of
250 °C (482 °F) or in the event of fire.
Rules of conduct:
¶Consult a doctor immediately after inhaling!
¶Always wear gloves made of neoprene or PVC when
removing residues left after a fire.
¶Neutralize any residues left after a fire with a cal-
cium hydroxide solution. This produces non-toxic
calcium fluoride, which can be washed away.
Acids and alkalis can cause severe burning on
unprotected skin. Hydrogen fluoride in combi-
nation with moisture (water) forms hydroflu-
oric acid. The condensate, which accumulates
in the sampling hose and in the condensate
container likewise contains acid.
Rules of conduct:
¶When replacing the O2 measuring sensor, bear in
mind that it contains alkali.
¶When replacing the NO measuring sensor, bear in
mind that it contains acid.
¶Rinse any affected parts of the skin immediately in
water, then consult a doctor!
¶NO and O2 measuring sensors are hazardous waste
and must be disposed of separately. Your Bosch spe-
cialist equipper can dispose of sensors in the proper
manner.
If liquid crystal escapes from a damaged liquid
crystal display, it is imperative to avoid direct
skin contact, inhalation and swallowing.
Rules of conduct:
¶If you have inhaled or swallowed liquid crystal, con-
sult a doctor immediately!
¶Wash the skin and clothing thoroughly with soap and
water if it has come into contact with liquid crystal.
If fluid (electrolyte) escapes from batteries
and rechargeable batteries, avoid getting it on
your skin or in your eyes.
Rules of conduct:
¶If contact with skin or eyes happens nevertheless,
wash the affected parts immediately with clean wa-
ter and then consult a doctor.

Bosch Automotive Diagnostics Equipment (Shenzhen) Limited
8 | VCI | Safety instructionsen
3.3 Danger of injury, Danger of crushing
The vehicle has rotating and moving parts
that can injure fingers and arms.
If the vehicle is not prevented from rolling
away, there is a danger of people being crus-
hed against a workbench, for example.
There is the risk with electrically operated
fans in particular that the fan can start run-
ning unexpectedly even when the engine and
ignition are off.
Safety measures:
¶Take steps to prevent the vehicle from rolling away
while it is being tested. Select the park position if the
vehicle has an automatic transmission and apply the
handbrake or lock the wheels with chocks (wedges).
¶Operating staff must wear work clothes without
loose bands and loops.
¶Do not reach in any area with rotating or moving parts.
¶When working on or in the vicinity of electrically
driven fans, allow the engine to cool down first, then
disconnect the plug of the fan motor.
¶Route cables at a suitable distance from rotating parts.
¶Secure the trolley against rolling away by setting the
brakes.
¶Do not place heavy objects on or lean on the sensor
holder.
¶Transport and operate the equipment only in ac-
cordance with the operating instructions.
3.4 Danger of burning
When working on a hot engine, there is a risk
of injury from burning if such components as
the exhaust gas manifold, the turbo-charger,
the Lambda sensor, etc. are touched or if
parts of the body come too close to them.
These components may be heated to tempe-
ratures of several hundred degrees Celsius.
Depending on the duration of the exhaust
gas measurements, the sampling probe of the
exhaust gas measuring instrument may also
become extremely hot.
Safety measures::
¶Always wear protective clothing, e.g. gloves.
¶Allow the engine to cool down first. This also applies
to auxiliary heating systems.
¶Keep connecting cables well away from all hot parts.
¶Do not leave the engine running any longer than
necessary for the test or setting.

Bosch Automotive Diagnostics Equipment (Shenzhen) Limited
Safety instructions | VCI | 9VCI | 9 | 9 en
3.5 Danger of fire, Danger of explosion
There is a risk of fire and explosion from fuels
and fuel vapors when work is performed on the
fuel system or on the mixture control system.
Safety measures:
¶Switch off the ignition.
¶Allow the engine to cool down first.
¶Avoid naked flames and potential sources of sparks.
¶Do not smoke.
¶Collect any leaked fuel.
¶Always ensure effective ventilation and suction when
working in closed areas.
3.6 Danger of asphyxiation
Car exhaust fumes contain carbon monoxide
(CO) - a colorless, odorless gas. If inhaled,
carbon monoxide causes an oxygen deficiency
in the body. Extreme caution is therefore es-
sential when working in a pit, as some of the
components of the exhaust gas are heavier
than air and settle at the bottom of the pit.
Caution is also necessary when working on
LPG-driven vehicles.
Safety measures:
¶Always ensure effective ventilation and suction (es-
pecially when working in a pit).
¶Always switch on and connect the suction plant in a
closed area.
3.7 Noise
Noise levels in excess of 70 dB(A) can occur
when measurements are carried out on a
vehicle, especially at high engine speeds. Da-
mage to hearing may result if human beings
are exposed to noise at such levels over an
extended period of time.
Safety measures:
¶Noise protection facilities must be provided by the ow-
ner at all workplaces in the vicinity of the testing area.
¶Suitable personal noise protection facilities must be
used by the operator.
3.8 Danger of tripping
When conducting tests or making adjust-
ments, the sensor and connection cables
increase the risk of tripping.
Safety measures:
¶Route the connecting cables such that any risk of
tripping up is prevented.

Bosch Automotive Diagnostics Equipment (Shenzhen) Limited
10 | VCI | Safety instructionsen
3.9 FCC Warning
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:(1)
this device may not cause harmful intererence, and
(2) this device must accept any interference received,
including interference that may cause undesired opera-
tion.
Note: changes or modifications not expressly approved
by the party responsible for compliance could void the
user's authority to operate the equipment. This equip-
ment has been tested and found to comply with the
limits for a Class B digital device, pursuant to Part 15
of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a
residential installation. This equipment generates, us-
ers and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions,
may cause harmful interference to radio communica-
tions. However, there is no guarantee the interference
will not occur in a particular insatllation. If this equip-
ment does cause harmful interference to radio or televi-
sion reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following
measures:
RReorient or relocate the receiving antenna;
RIncrease the separation between the equipment and
receiver;
RConnect the equipment into an outlet on a circuit
different from that to which the receiver is connec-
ted;
RConsult the dealer or an experienced radio/TV tech-
nician for help.
3.10 Satety Warning
RInspection shall be carried out in good ventilation.
Connect the exhaust pipe to outside if there is no
enough ventilation;
RSmoking and open fire are prohibited in the inspec-
tion;
RThe battery liquid contains sulphuric acid that could
erode the skin. Avoid battery liquid from touching
the skin directly in operation, especially note that
the liquid shall not be splashed into eye;
RThe engine temperature is high when running. Avoid
touching the high-temperature parts, such as radia-
tor and exhaust pipe;
RPull manual brake before starting the engine. Block
the front wheels and place shift lever at P or neutral
gear to avoid accident when starting the engine;
RIf external batter is used as power supply, pay
attention to the electrode; use red alligator clip to
connect anode and black alligator clip to connect
cathode;
RKeep all the power cables, pens and tools away from
belt or other moving parts if using instrument in
engine compartment;
RDo not wear watch, ring and loose clothes in mainte-
nance for engine compartment;
RWear approved safety glasses in all inspection pro-
cesses;
ROnly the enclosed power adapter or power supply
cable can be used for supply connection;
RIf the equipment is used in a manner not specified
by the manufacturer, the protection provided by the
equipment may be impaired;
RPlease don't use it to clip the body when Alligator
Clip have powered.

Bosch Automotive Diagnostics Equipment (Shenzhen) Limited
Safety instructions | VCI | 11VCI | 11 | 11 en
3.11 Using notes
RThe instrument is precise electronic instrument, do
not drop it;
RThe instrument may respond slowly in first inspec-
tion. Please be patient. Do not operate the instru-
ment frequently;
RIf the program is interrupted or the display is disor-
dered after flashing. Shut off the power and switch it
on again for test;
REnsure that the instrument and the diagnosis retai-
ner are connected securely, otherwise the interrup-
ted signal will affect the test. If they can’t be con-
nected normally, pull out the connector and plug it
again. Do not shake the connector in using;
RUse screw to fasten the connection wire and con-
nectors to avoid disconnecting and damaging the
interface. Hold the front end of the connector when
pulling it. Do not pull the rear connection wire;
RHandle the instrument gently and put it in safe place
to avoid impact. Shut off the power when not using;
RInsert the touch pen into the hole of the instrument
after using and put the accessories into the kit;
ROnline upgrade will be affected by local wire speed.
Please wait patiently if the loading is slow;
RCertain inspection and maintenance basis are requi-
red to operate the instrument, as well as electrical
control system of the inspected automobile.
3.12 Notes for operation of automobile
ECU
Pay attention to the following when diagnosing the au-
tomobile equipped with computer control system:
RDo not put the magnetic objects, such as radio
loudspeaker near the computer, because the magne-
tism of the loudspeaker will damage the circuits and
parts in ECU;
RNever switch off the internal electrical devices when
the ignition switch is on. The self-induction of the
coil when power-off will generate high instantaneous
voltage that will damage the sensor and ECU;
RSpecial attention shall be paid to avoid damaging
ECU and sensor when carrying out maintenance near
the computer or sensor;
RConnect the ECU harness connector securely, other-
wise it will damage the electronic units, such as
integral circuit in ECU;
RWear earthing metal strap with one end on the body
and another end twisting finesse when repairing or
approaching ECU-control digital instrument;
RShut down ECU system power before welding on the
automobile;
RUnless specified, do not test the electrical devices
related to ECU with test lamp to avoid damaging ECU
or sensor;
RUnless specified in test process, use digital instru-
ment with high impedance to test ECU and sensor,
rather than pointer ohm gauge.

Bosch Automotive Diagnostics Equipment (Shenzhen) Limited
12 | VCI | Introduction to KT400 hosten
4. Introduction to KT400 host
4.1 Host identifications
Identifi-
cation
Description
The malfunction indicator lamp, lighting in red to indi-
cate the KT400 malfunction;
The ECU communication indicator lamp, lighting in
green to indicate the CAN communication mode or in
yellow to indicate other communication modes;
Power button;
Back mainpage button;
Back off button.
4.2 Diagnosis port
1 2
DIAG
KT400/001
Fig. 1: Diagnosis Port
1. Diagnosis interface
2. Power interface
4.3 Connection Port
1 2 3 4 5
KT400/002
Fig. 2: Connection port
1. USB interface(Reserve)
2. Pinter interface(Reserve)
3. Network communication interface(Reserve)
4. Trough of SD card
5. Micro USB
5. Equipment connection
According to different functions, the connection modes
are: including diagnostic connection, selfcheck connec-
tion and firmware upgrade connection.
5.1 Diagnostic connection
Before using the equipment, please ensure the normal
connection between the KT400 and on-board ECU.
1
2
3
4
6
5
7
K
T
4
00/
00
3
Fig. 3: Diagnostic connection
1. Interface on car
2. Connector
3. Diagnostic extension cable
4. Power extension lead
5. Alligator clip
6. Cigarette igniter connector
7. KT400 host

Bosch Automotive Diagnostics Equipment (Shenzhen) Limited
KT400 system settings | VCI | 13VCI | 13 | 13 en
5.2 Selfcheck / upgrade connection
1
2
KT400/004
Fig. 4: Selfcheck / upgrade connection
1. Power adapter
2. KT400 host
iPlease don't connect KT400 host and diagnostic
extension cable when selfcheck.
6. KT400 system settings
6.1 Auxiliary function
The auxiliary function include the language settings,
system selfcheck, VCI selfcheck, touch calibration, cont-
rast adjustment, time and date setting,
6.1.1 Language Settings
KT400 provides the multi-language system for user to
switch languages.
Operation Steps:
1. Proceed to the language settings module and select
the target language from the “Language Type Selec-
tion” box;
2. Click the “OK” button and the interface will prompt
“Effective after System Restart”.'
3. The language settings will be effective after the
system restart.
6.1.2 System selfcheck
System selfcheck include check real-time clock, check
SD card, check LCD display, check pilot lamp, check
buzzer, check key-press, check LCD apheliotropic.
Operation steps:
1. Select the check items, one or more;
2. Click the "Start Check" button, then operation fol-
lowing the interface prompts;
3. When finished, interface will display the result.
6.1.3 VCI selfcheck
This function is used to detect whether the KT400 VCI
is normal.
Operation Steps:
1. Ensure KT400 normally open;
2. Click the “Start Selfcheck” button and wait for the
selfcheck completion and detection result display.

Bosch Automotive Diagnostics Equipment (Shenzhen) Limited
14 | VCI | KT400 system settingsen
6.1.4 Touch calibration
When feeling the screen distorted during the use, the
user may need to calibrate the touch screen. Click the
Touch Calibration module to enter into the calibration
window.
Operation steps:
1. Click "Touch calibration" button, Click on the center
of cross cursor accurately with the touch pen by
following the prompt.,One calibration ends once the
cursor changes;
2. Cross cursor will move to 5 points, include top left
corner, below left corner, top right corner, below
right corner, and center, after completing calibration
at all corners, the system will prompt it the screen
has been calibrated successfully and will return to
the system setting menu automatically.
iDon't click on the srceen before the cursor appears,
otherwise it may lead to calibration failure.
6.1.5 Contrast adjustment
This function menu allows you to adjust LCD bright-
ness of the instrument. Owing to its characteristics,
LCD may perform differently in different sunlight, at
different temperature and humidity. You may adjust and
save the brightness value of LCD at any time to achieve
the best effect.
Operation steps:
1. By clicking the buttons "-" and "+" increase or decre-
ase the brightness percentage;
2. After adjustment, click "ok" button, save the adjust-
ments; You can click "cancel" button, don't change
the adjustments.
6.1.6 Time and date setting
This function is used to set time and date, for example:
when you screenshot, the file name include current
date and time.
Operation steps:
1. Please select the change items;
2. By clicking the buttons "-" and "+" adjust the date
and time;
3. Select format and separator of date; select time
zone and format of time;
4. Click "OK" button, save the adjustments; you can
click "Cancel" button, don't change the adjustments.
6.1.7 Vehicle Logo Replacement
There are two vehicle logo replacement methods: single
replacement and integral replacement, with the single
replacement taken as the default mode. The picture
size is 136*115 (mm) and the picture format is bmp.
6.1.7.1 Single Replacement
Only one vehicle logo can be replaced one time.
Operation Steps:
1. Select “Single Replacement”;
2. Select the vehicle logo to be replaced in the left
dropdown box;
3. Select the target vehicle logo on the right;
4. Click the button in the middle to synchronize
logos at both sides; at the same time, the replace-
ment button changes to the available status;
5. Click the “Replace” button.
iYou can select the vehicle logo according to brand
when single replacement.
6.1.7.2 Integral Replacement
Several vehicle logos can be replaced one time.
Operation Steps:
1. Select the “Integral Replacement”;
2. Click the “Browse” button to select the target pic-
ture folder, and its path shall correspond with the
path in the CF folder;
3. Click the “Replace” button.
6.2 Network Setting
6.2.1 Network connection
This function is used to set netword connection.
Automatic access to IP or automatic access to DNS,
click "OK" button to save the setting informaton.
Operation steps of manually set the IP:
1. Click "Manually set the IP" option;
2. Order to enter information of IP adress, Subnet mask
, the default gateway;
3. Click "OK" button to save the information.
Operation steps of manually set the DNS:
1. Click "Manully set the DNS" option;
2. Order to enter information of "Preferred DNS server"
or "Altemate DNS server";
3. Click "OK" button to save the information.

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6.2.2 Proxy Settings
This function is intended to judge whether the proxy
server is required for the computer networking; if not
required, select “Don't Use the Proxy Server”.
Setting method for using the proxy server:
1. Select “Use the Proxy Server”;
2. Enter the address and port information;
3. If there have user name and password, you must to
enter the correct information, then using the proxy
server;
4. Click the “OK” button.
6.3 Activation
If the product is not activated, you can only view the
test demonstration rather than carrying out the diagno-
sis with KT400.
Operation Steps:
1. Check whether KT400 is normally connected with
internet;
2. KT400 will automatically detect the product serial
number, click "Activation" button, the software will
automatically detect the netword; If not ok, display
"Network connection overtime", please enter into
"Network connection" model to set;
3. If network is worked to proceed to the individual in-
formation filling interface; please enter your informa-
tion following the interface prompts; If information
incorrect, you must to re-enter;
4. If all information is accurate, click the “Next” button,
the interface will display "Successful product activa-
tion, software must to restart";
5. Please restart software, you can using it.
i User name is combined by letters and numbers, the
length is 3-16 characters; the password length is
6-16 characters;
i The user name is used for upgrade log-in, which
can’t be repeated, and real-name registration is
recommended; the E-mail is used for the password
retrieve, and please fill your frequently-used E-mail;
upon submitting your individual information, please
remember your user name and password.
6.4 Upgrade
Upgrade include software upgrade, VCI upgrade, sys-
tem upgrade and local upgrade.
This function is available only after the product activati-
on. If not, display "Not activation".
iBefore upgrade, please ensure the normal connec-
tion between the KT400 and internet;
iEnsure the integrity of the upgrade process by not
forcing to terminate the program.
6.4.1 Software Upgrade
Software upgrade includes application software up-
grade and diagnostic database upgrade.
Operation Steps:
1. The software will automatically detect the version of
application software and diagnostic database;
2. If you didn't change the user name and password,
click the “New Version Detection” button to detect
the latest version; If you changed, you must to enter
user name and password at first;
3. If there have new version, the interface will display
"Download" button;
4. Click "Download" button, waiting for finished; You
can monitor download progress;
5. After successfully download, click "Install" button to
insatll upgrade package;
6. After restart software, you can using the latest soft-
ware.
iWhen you log-in, user name and password is entered
3 times, if more, you must to wait 15 minutes.
6.4.2 VCI upgrade
If software upgrade package include the latest VCI up-
grade package, when you open KT400, the system will
automatically remind to upgrade.
Operation steps of manually upgrade:
1. Click "Upgrade" button to upgrade, You can monitor
upgrade progress;
2. Wait for finished, if successfully upgrade, display
"Successfully upgrade".

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6.4.3 System upgrade
This function is used to KT400 system upgrade.
Operation setps:
1. Click "Download" button to wait download finished,
you can monitor download progress;
2. After successfully download, then operate according
to interface display.
iBefore download, please confirm KT400 and internet
normally connection.
6.4.4 Local upgrade
This function is used to upgrade the whole package.
Operation steps:
1. Please download the whole package from website,
and save the files to root directory of SD card;
2. Select "Local upgrade" option, the system will auto-
matically detection the whole package;
3. Click "Install" button to wait install finished.
6.5 About equipment
6.5.1 System information
The system information includes the product serial
number, instrument type, machine type, software ver-
sion, activation status, hardware version and system
version.
6.5.2 User information
The user information includes the contact information,
telephone number, maintenance station name, mainte-
nance station code, maintenance station address, and
remarks.
Operation Steps:
1. Enter your information in the "*" input box marked;
2. Click "OK" button and save your informations; you
can click "Cancel" button and don't save information.
iIf such information is consistent with that upon prin-
ting, you can directly enter them and click the “OK”
button for saving. It is unnecessary to enter such
information upon printing.
6.5.3 VCI
VCI informationS include serial number and
firmware(VCI) version, KT400 will automatically detec-
tion VCI informations.
7. Vehicle Diagnostic
Main Interface of Vehicle Diagnosis:
No. Description
①The main function area, including vehicle diagnosis, and
service help;
②The system function area, including screenshot, play-
back, setting, mainpage and help ;
③The display area for vehicle series, including All, Chinese,
American, European, Japanese, Korean, OBD-II and his-
tory record;
④The display area for testable vehicle models, including all
testable vehicle models of each vehicle series;
⑤The display area for additional functions, including brand
search;
⑥The scrolling bar, which can be dragged for viewing con-
tents of multiple screens when the displayable contents
are in more than one screen.
: Open button, click to display system function menu;
: Close button, click to close system function menu,
this button will display after click open button.
7.1 Test Conditions
RThe vehicle power switch turned on;
RThe vehicle battery voltage at 12V or 24V;
7.2 Power supply of host
There are 4 power supply modes for VCI host, you can
select according to your requirement:
RAC power supply: take out VCI standard configura-
tion power adapter in the instrument; Connect one
end to the power interface of the instrument and
another end to 100~240V AC socket;
RAutomobile battery cell power supply: take out
KT600 standard configuration power extension lead
and alligator clip; connect one end to the power in-
terface of the instrument and another end to battery
end;
RCigarette lighter power supply: take out VCI standard
configuration power extension lead and cigarette
lighter; connect one end to power interface and ano-
ther end to cigarette lighter;
RDiagnosis retainer power supply.

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7.3 Selecting a Method to Access the
Diagnosis System
There are three methods available for accessing the dia-
gnosis system, i.e. Manual Selection, Brand Search and
History Record. You may select the most suitable ope-
ration method out of them depending on your available
information.
7.3.1 Manual Selection
You may manually select the corresponding vehicle mo-
del, system or system function to proceed to the diag-
nosis operation.
For example, you may: click “Chinese Vehicle Series”
--- “Chery” --- “Fulwin” ---”Engine” --- “Motorola EFI
System”, and then carry out the diagnosis test on your
desired system function.
7.3.2 Brand Search
This function searches the corresponding vehicle
brands according to the information input, but it only
supports the search by letters.
Operation Steps:
1. Enter CHANGAN in the search box.
2. Just click the button on the right to find out
the CHANGAN brand and carry out the diagnosis
test.
7.3.3 History Record
You may access your desired vehicle model or system
through the “History Record”, provided that you had
diagnosed this vehicle model or system. Only 30 latest
tested vehicle models can be saved in the “History Re-
cord”.
iFor your convenient choice, we recommend that you
use to manual selection or brand search into diag-
nostic system.
7.4 Diagnostic
7.4.1 Introduction to Main Interface of Diagnosis
System
After you access the diagnosis system, the KT400 will
display all diagnosis functions that can be achieved by
this system.
No. Description
①The display area for diagnosis functions: it shows all dia-
gnosis functions of this system;
②The display area for help information: it shows the help
information of a diagnosis function and supports both li-
teral and graphic information.
: Click this button to go back to the main interface.
You can find this button on display of select menu, read
DTC and read data stream.
: Diagnostic help button, if there have help informa-
tion, the button will display. Otherwise not display.
7.4.2 Reading Version Information
This function is used to read the computer information
of the system being tested. The information read varies
with different vehicle models or systems. Generally,
when you replace the vehicle control unit, it is neces-
sary to read and record the information of original
control unit and take such information as a reference
for purchasing a new control unit. Coding a new control
unit requires the information of original control unit.
Operation Steps:
1. After proceeding to the diagnosis function, click
“Read Version Information” to get a pop-up dialogue
box, which shows the relevant information of vehicle
computer such as software version, hardware versi-
on and part numbers.
2. Click the “OK” button to quit this function.

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7.4.3 Reading DTC
This function is used to read the fault code in the ECU
memory of the system being tested, helping the service
personnel quickly find out the cause of vehicle fault.
Operation Steps:
1. After proceeding to the diagnosis function, click
“Read Fault Code”.
2. Open the fault code interface to view the fault code
items, including content, status (current or random),
freeze frame and help.
3. Click the “Exit” button to quit this function.
iIf the system being tested is normal, the interface
will display “System OK” and the button “Clear Fault
Code” will not appear on the interface.
iIf the fault code has some freeze frame or help
information, its icon is blue. Or else, its icon is gray,
which means unavailable.
iButton Description:
Button Description
Reading the freeze frame information; when it is dis-
played in grey, this means there is no freeze frame
information;
The help information for fault code; when it is dis-
played in gray, this means there is no help informa-
tion;
Clearing the fault code, see 9.3.4; if the system
being tested is normal, this button will not appear
on the current interface;
Refreshing the current fault code; after eliminating
some faults, you may click this button to refresh the
existing fault codes.
7.4.3.1 Help Information for DTC
It is used to display the help information for the opposi-
te fault code.
Operation Steps:
¶Select a fault code, and click the “Help Information
for Fault Code” button. Then the interface will show
the help information for this fault code, helping the
service personnel quickly find out and solve the
problem.
iThis interface is an independent window, regardless
of the diagnosis software.
7.4.3.2 Reading Freeze Frame
In the engine management system, the freeze frame
function is supplementary to the fault code function.
It is basically used to freeze the relevant working con-
ditions of engine when engine fault arises, helping the
service personnel know the working conditions of the
whole vehicle upon the fault occurrence.
Operation Steps:
1. Select a fault code, and click “Read Freeze Frame
Information” to proceed to the corresponding inter-
face. Each freeze frame can display a maximum of 5
groups of data;
2. Click the “Exit” button to quit this function.
iYou may also proceed to this function through the
“Read Freeze Frame” button at the diagnosis func-
tion area, but then only the freeze frames for com-
mon data streams can be read and generally only
one group of data will be displayed.
7.4.4 Clearing DTC
It is used to clear the DTC saved in the ECU memory of
the system being tested.
Operation Steps:
1. After proceeding to the diagnosis function, click
“Clear Fault Code” to get the dialogue box, which
displays the clearing conditions.
2. After the completion of fault code clearing, the inter-
face will display “Clearing Command Executed”;
3. Click the “OK” button to quit this function.
iFor the common vehicle models, you shall strictly
comply with the following regular work procedures:
firstly, read, record (or print) and clear the fault
codes; then, test the vehicle, and re-read the fault
codes for verification; next, service the vehicle and
clear the fault codes; finally, re-test the vehicle and
confirm that the fault codes are no longer present;
iIt is impossible to immediately clear any current hard
fault code. Although such technical fault codes invol-
ving oxygen sensor, knock sensor, mixture correction
and cylinder misfire can be immediately cleared,
they would reappear within a certain period. Only
after the fault has been completely eliminated will a
fault code never reappear.

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7.4.5 Reading Data Stream
By means of values or conditions of data streams, this
function can identify whether the vehicle components
are faulty.
Operation Steps:
1. After proceeding to the diagnosis function, click
“Read Data Stream” to get the “Read Data Stream”
dialogue box;
2. Click the “Select All” check box to select all data
streams; also, you may only click the check boxes
in front of data streams to select the desired data
streams;
3. Click “Read Data Stream” to view names, results and
units of data streams;
4. Click the “Exit” button to quit this function.
iWhen you are reading the data streams, the “Pause”
button can be clicked to provide convenience for you
to view the results of data streams. Once clicked, the
“Pause” button will switch to the “Resume” button.
iButton Description:
Button Description
The “Top” button; to set a data stream to the top for
display, click this button in front of this data stream;
to cancel the setting, click this button again;
The “Exit” button, used to quit the function “Read
Data Stream”;
The “Print” button, see <7.5.1>;
The “Compare Data Streams” button, see <7.4.5.2>;
The “Pause/Resume” button; when clicked during the
course of reading data streams, it pauses the reading
and switches to the “Resume” button; to resume the
reading, click the “Resume” button;
The display mode of data stream, see <7.4.3.5>;
The “Travel Recorder” function, see <7.4.6>;
The “Capture Data Streams” function, see <7.4.5.1>;
The “Save Data Streams” function, see <7.4.5.3>;
Viewing the previous page of data stream;
Viewing the next page of data stream.
7.4.5.1 Capturing Data
It capture the data stream being tested.
Operation Steps:
1. Click the “Capture Data” button and start to capture
the current value of data stream; you may turn the
pages to capture all data streams. If you do not turn
the pages, only the data stream displayed in the
current screen will be captured;
2. Click the “Save” button to save the data stream read.
iBefore you activate the “Capture Data” function, the
“Save” button is gray, which means unavailable.
7.4.5.2 Comparing Data Streams
By means of comparing the current values of data
streams with the saved history values of data streams,
this function can identify whether the relevant compo-
nents present a good working condition.
Operation Steps:
1. Click the “Compare” button to get the dialogue box
which displays all openable data stream files.
2. Select a data stream file and click the “Open” button
to get the interface which displays the current read
values and recorded history values.
iThe data stream save path is assigned by the sys-
tem and cannot be modified; the current values are
displayed in black, while the recorded history values
are in green;
iIn the opened dialogue box, you may delete the un-
necessary data files which are previously saved;
iCompare data stream is only used to numeral dis-
play;
iThe “Save” button will switch to the “Clear” button.
7.4.5.3 Saving Data
This function is used to save the values of all currently
captured data streams.
Operation Steps:
1. Click the “Save” button to get the “Save” dialogue
box, in which the save path is assigned by the sys-
tem and cannot be modified;
2. Enter the file name and click “Save”; then, the inter-
face will display “Data Saved”.
3. Click "OK" to complete the saving of data streams;
then, the “Save” button will go gray, which means
unavailable.

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7.4.5.4 Clearing Data
This function is used to clear the comparison between
data streams.
Operation Steps:
¶Click the “Clear” button to clear the history values
of data comparison; meanwhile, the “Clear” button
switches to the “Compare” button.
7.4.5.5 Display Modes of Data Streams
The value of a data stream can be displayed in three
modes, i.e. numeral, waveform and control. The nume-
ral display mode is taken as a default.
Operation Steps:
1. After reading the data streams, the values of read
data streams will be displayed in numerals;
2. Click the “Numeral” button and select "Waveform"
from the pop-up options; then the values of data
streams will be displayed in waveforms, and the “Nu-
meral” button will switch to the “Waveform” button;
3. Click the “Waveform” button and select "Control"
from the pop-up options; then the values of data
streams will be displayed in controls and the “Wave-
form” button will switch to the “Control” button;
4. Click the “Control” button and select "Numeral" from
the pop-up options; then the values of data streams
will be displayed in numerals and the “Control” but-
ton will switch to the “Numeral” button.
iThe button status switches in compliance with the
mode in which the current data streams are dis-
played.
7.4.6 Travel Recorder
The travel recorder is mainly used to record some data
of ECU for a long time. Each data is continuous recor-
ding up to 2 hours. During the course of recording,
it can save the data at any time and save them in the
“.REC” format under the specified folders.
You may click the “Travel Recorder” button at the
“Read Data Stream” interface to proceed to the “Travel
Recorder” interface.
Parameter Description:
$Period: according to the period you select, the
system will automatically match it with the selec-
table data streams; the system provides 3 optio-
nal periods, i.e. 250 ms, 500 ms and 1000 ms;
$Maximum Records: according to the period, the
system will automatically match it with maximum
records.
$Record Time: it can be manually set to 10 min
as a minimum and 120 min as a maximum; the
default record time is 120 min;
$Trigger Time: it can be manually set to 20 s as a
minimum and 120 s as a maximum; the default
trigger time is 20 s.
Operation Steps:
1. Select the period you desire;
2. Select the record time you desire;
3. Select the trigger time you desire;
4. Select the desired data stream to be recorded; if you
don’t select a data stream, the system will pop up a
warning dialogue box after you press the “Record”
button; if the selected data streams outnumber the
displayed maximum records, the system will also
pop up a warning dialogue box;
5. Click the “ ” button to start recording;
6. Click the “Record” button to stop the recording;
enter the file name in the pop-up dialogue box, and
click "Save" to save the currently recorded data.
iTrigger Records: when you click this button, the VCI
will automatically save the data streams within the
trigger time to the fixed default paths of system; this
function supports the data stream playback;
iThe save paths for the recorded data are system
defaults and cannot be modified.
iYou may monitor the data record time by the time
progress bar on the screen.