Launch X-431 PADII User manual
Version: V1.00.000
Revision Date: 10-20-2020
Statement: LAUNCH owns the complete intellectual property rights for the
software used by this product. For any reverse engineering or cracking actions
against the software, LAUNCH will block the use of this product and reserve the
right to pursue their legal liabilities.
LAUNCH
X-431 Module S2 User Manual
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Copyright Information
Copyright © 2020 by LAUNCH TECH CO., LTD. All rights reserved. No part of
this publication may be reproduced, stored in a retrieval system, or transmitted
in any form or by any means, electronic, mechanical, photocopying, recording or
otherwise, without the prior written permission of LAUNCH. The information
contained herein is designed only for the use of this unit. LAUNCH is not
responsible for any use of this information as applied to other units.
Neither LAUNCH nor its affiliates shall be liable to the purchaser of this unit or
third parties for damages, losses, costs, or expenses incurred by purchaser or
third parties as a result of: Accident, misuse, or abuse of this unit, or
unauthorized modifications, repairs, or alterations to this unit, or failure to strictly
comply with LAUNCH operating and maintenance instructions. LAUNCH shall
not be liable for any damages or problems arising from the use of any options or
any consumable products other than those designated as Original LAUNCH
Products or LAUNCH Approved Products by LAUNCH.
Trademark Information
LAUNCH is a registered trademark of LAUNCH TECH CO., LTD. (LAUNCH) in
China and other countries. All other LAUNCH trademarks, service marks,
domain names, logos, and company names referred to in this manual are either
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countries where any of the LAUNCH trademarks, service marks, domain names,
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and company names. Other products or company names referred to in this
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use Materials on this manual for purposes or for all other questions relating to
this manual.
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X-431 Module S2 User Manual
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Important safety and operation information
To avoid personal injury, property loss, or accidental damage to the product,
please read all the information in this section before using the product.
Handle device carefully.
Do not drop, bend, puncture, insert foreign objects, or place heavy objects
on the device. The inside fragile components may be damaged.
Do not disassemble or refit the device.
The device is a sealing device and there are no end-user serviceable parts
inside. All internal repairs must be carried out by authorized maintenance
agencies or authorized technicians. Attempts to disassemble or refit the
device will void the warranty.
Do not try to replace the internal battery.
The internal rechargeable battery must be replaced by authorized
maintenance agencies or authorized technicians.
Precautions for vehicle ECU operation
When performing diagnostic operations on a vehicle equipped with the ECU,
pay attention to the following items:
When the ignition switch is turned on, the vehicle internal electrical units
must not be disconnected. Otherwise, a high instantaneous voltage will
be generated due to the self-inductance of the coil, which will cause
damage to the sensor and ECU.
Do not place magnetic objects such as radio speakers close to the
computer, because the speaker magnets can damage the circuits and
components in the ECU.
Do disconnect the ECU system power supply when welding on the
vehicle.
When performing repair work near a computer or sensor, pay more
attention to avoiding damage to the ECU and sensor.
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Ground yourself when you disassemble the programmable ROM.
Otherwise, ECU circuits can be damaged by static electricity.
Unless otherwise specified in the test procedure, the ECU and sensor
should not be tested with a pointer ohmmeter, but with a high-
impendence digital meter.
Do not use test lamps to test ECU related electrical units in order to
prevent ECU or sensor damage, unless otherwise noted.
When people enter or exit the vehicle, the electrostatic discharge of
human body can generate a high voltage of up to 10000V. Therefore,
when performing maintenance operations on the digital meter controlled
by the ECU or near this meter, be sure to wear a grounded metal strap
with one end around the wrist and the other end clamped on the vehicle
body.
Reliably connect the ECU harness connector to avoid damage to the
electronic components such as the integrated circuits inside the ECU.
FCC Statement
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
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
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CONTENTS
1.
INTRODUCTION.....................................................................................................1
1.1
PRODUCT DESCRIPTION...................................................................................................1
1.2
COMPONENTS & CONTROLS........................................................................................... 2
1.3
PERFORMANCE PARAMETERS........................................................................................ 4
1.4
PACKING LIST .......................................................................................................................6
2.
INITIAL USE ............................................................................................................9
2.1
CONNECTION ........................................................................................................................ 9
2.2
JOB MENU............................................................................................................................10
3.
SENSOR.................................................................................................................11
3.1
CONNECTION ........................................................................................................................11
3.2
HOW TO OPERATE..............................................................................................................13
3.2.1
DC Sensor...............................................................................................13
3.2.2
AC Sensor ...............................................................................................18
3.2.3
Frequency Modulation...........................................................................22
4.
ACTUATOR...........................................................................................................26
4.1
CONNECTION ........................................................................................................................26
4.2
HOW TO OPERATE..............................................................................................................28
4.2.1
Independent Ignition Module (COP) ....................................................28
4.2.2
Idle Speed Motor....................................................................................29
4.2.3
EGR Valve...............................................................................................31
4.2.4
Carbon can solenoid valve....................................................................32
4.2.5
Turbocharged solenoid valve................................................................33
4.2.6
Fuel spray nozzle ...................................................................................34
4.2.7
VVT solenoid valve.................................................................................35
4.2.8
Electronic throttle valve assembly, air conditioning fan.....................37
5.
DEFINED/DRAWN................................................................................................39
5.1
DEFINED .................................................................................................................................39
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5.2
HAND-DRAWN .......................................................................................................................40
6.
TIMING WAVEFORM...........................................................................................42
7.
MULTIMETER .......................................................................................................44
7.1
HOW TO CONNECT .............................................................................................................44
7.2
HOW TO OPERATE..............................................................................................................44
7.3
DETECTION EXAMPLE........................................................................................................45
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1.
Introduction
1.1 Product Description
This module is specially developed for diagnosing/simulating sensor faults. It
mainly includes "Sensor", "Actuator", "Defined/Drawn", and "Timing Waveform".
Users can easily and quickly diagnose and simulate the sensor. The sensor is
the signal input device of the vehicle ECU. It converts vehicle operating
parameters such as vehicle speed, coolant temperature, engine speed, air flow,
and throttle opening into electrical signals and sends them to the vehicle ECU.
Then, the vehicle ECU adjusts the engine running status to maintain the engine
in optimal condition.
At the same time, the module also supports the vehicle multimeter function.
Through this function, users can test voltage, resistance, and capacitance. The
function uses the same hardware device as the sensor module.
The module cannot be used separately, and must be used together with
Launch-specific diagnostic tools compatible with this module.
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1.2 Components & Controls
No.
Name
Description
1
COM
Multimeter common
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2
V/Ω/C Multimeter measuring terminal
3
Power button Press this button to start up and shut
down.
4
B-type USB interface It is connected to the diagnostic device
via a USB cable.
5
Batterystatus indicator
lamp (green)
If the green lamp is steady on, the
battery electric quantity is normal. If the
green lamp is flashing at an
intermediate speed, the electric
quantity is low (regardless of whether
the red lamp flashes). If the green lamp
is flashing at a low speed, charging is
in progress.
6
Connection status
indicator lamp (red)
If the red lamp is steady on, the
diagnostic tool is connected. If the
red lamp is flashing, the diagnostic
tool is disconnected.
It will enter the charging status only
when the red lamp is flashing. The
green lamp is flashing at a low
speed during charging (if the
electric quantity is full, it will stay
on).
7
CH2
Channel 2
8
CH1
Channel 1
Used to connect 7-pin interface (to six
4mm safety banana head lines) to
9
7-pin interface
measure the actuator. When
measuring the actuator, it is necessary
to connect the module to the car
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battery to supply power.
10 Power interface Power the module through the battery
clamps cable.
1.3 Performance Parameters
Sensor module:
Parameter
Range
Number of channels
2
Precision
1%
Amplitude range
0~20V
Max output current
20mA
Predefined frequency range
0~20KHz
Square wave signal pulse
frequency
0~15KHz
Square wave signal duty cycle 0~100%
Power supply
Simulator sensor output/max current
20mA (output is powered by battery)
Drive solenoid, ignition coil/output
current 2A (external power supply)
USB USB2.0 Type B (with charging and
power supply function/5V)
DC voltage simulation Support
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Fixed frequency simulation Support
Predefined waveform simulation Support
Hand-drawn waveform
simulation
Support
Signal generator interface 2
External power supply port 1
Solenoid interface 2
Multimeter interface 2
Working temperature 0℃~50℃
Storage temperature -30℃~70℃
Multimeter:
Parameter Range
DC voltage 0V~700V
AC voltage 0V~700V
Resistance 0Ω~40MΩ
Capacitance 0F~100uF(maximum 30s measurement time)
Diode 0V~1.5V
Continuity detection Sounds below 30Ω
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1.4 Packing List
Sensor module accessories include sensor test cables, probes, etc.
Due to different product configurations, the accessories included in the product
may be different from those listed in this manual. For the specific accessories
included in the product, refer to the packing list attached to the product.
The following is the appearance diagram of each test line and related
accessories.
No.
Name
Description
Qt.
1
Sensor module
1
2
HT30 test leads
A kind of special line used to connect sensors
and test various types of signals. Wide-range
probes, clamps, and hooks can be inserted
into the 4mm connector at the end of the
line.
2
3
7-pin interface
adapter cable
Used to connect the sensor module and
actuator to test the actuator. When testing
the actuator, do connect the sensor module
1
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to the car battery for power.
4
Battery clamps
cable
Used to connect the sensor module to the
car battery only using the Actuator module.
1
5
USB cable
Used to connect the sensor module and
diagnostic tool, and send the signal collected
by the sensor module to the diagnostic tool
for waveform display.
1
6
6-waybreakout
lead
The 6-way lead is available in 3 joint sizes:
1.0mm, 1.6mm, 2.8mm
The lead can be easily connected to the
existing car harness interface, which is
convenient for reading sensor signals. The
output signal is connected to the CH1/CH2
input port of the sensor module through the
HT30 test leads from the 4mm banana
connector at the other end of the lead.
3
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7
Multimeter test
pen (black + red)
During a multimeter function test, it must be
connected to the COM and V/Ω/C terminals
of the sensor module.
2
8
Back Probe Pins
Suite
They are mainly used for piercing the
insulation of wires to allow for automotive
electrical measurements without causing
damage to the wires. Additionally they can
be used as pin-tip probes while working with
small circuit boards.
1
9
Power adaptor
To charge the sensor module together with
the included USB cable.
1
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2.
Initial Use
2.1 Connection
1)
Insert one end (B-type terminal) of the USB cable into the B-type USB port
of the sensor module host, and then insert the other end into the USB port
of the diagnostic tool.
2)
Press and hold the power button for over 3s to start the sensor module. If
the electric quantity is normal, the green lamp is steady on.
Indicator lamp status description:
Green lamp
Steady on: normal electric quantity
Flashing at an intermediate speed: low electric
quantity (regardless of whether red lamp
flashes)
Flashing at a low speed: charging in progress
Red lamp
Steady on: diagnostic tool connected
Flashing: diagnostic tool disconnected.
It will enter the charging status only when the red
lamp is flashing. The green lamp is flashing at a
low speed during charging.
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3)
Start the diagnostic tool and access the toolbox. Tap Sensor Simulator to
access the job menu of sensor.
2.2 Job Menu
The sensor module is mainly divided into fivefunctional modules.
1)
Sensor: Use output voltage or waveform to simulate the working status of
the on-board sensor, so as to accurately judge the quality of the sensor and
reduce blind replacement of accessories.
2)
Actuator: Used to output PWM signal to drive the on-board coil actuator.
3)
Defined/Drawn: Users can customize sensor waveforms to facilitate future
sensor signal simulation.
4)
Timing waveform: Customize timing waveform to match the engine
(crankshaft + camshaft), and output in the same phase.
5)
Multimeter: universal multimeter functions.
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3.
Sensor
3.1 Connection
The sensor simulation function can accurately judge the quality of the sensor
and reduce blind replacement of accessories. For example, the DTC shows that
the water temperature sensor is faulty, but whether it is the fault of the water
temperature sensor itself, or the wiring between the sensor and ECU, or the fault
of the ECU itself still needs further diagnosis. At this time, the signal of the water
temperature sensor can be simulated by the simulation function instead of the
water temperature sensor and inputted to the microcomputer. If the engine
working condition is improved and the fault symptom disappears, it can be
judged as a fault of the water temperature sensor. If the fault symptom persists,
directly input the signal at the corresponding terminal of the ECU. If the fault
symptom disappears, it is the wiring fault between the water temperature sensor
and ECU. If the fault symptom persists, it can be judged as a fault of the ECU
itself.
The following connections are required for detecting sensors:
1)
Connect the sensor module to the diagnostic tool via the USB cable (refer to
Chapter 2.1).
2)
Remove the sensor connected to the ECU.
3)
According to the specific application and bus terminal types, make the
following connections (note: when performing the sensor functions, the
hardware output ports of the sensor module are CH1 and CH2).
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(1)
The BNC connector of the HT30 test line is connected to CH1 or CH2
(can be connected to both CH1 and CH2 as required), and the other
end (divided into two ways, red is signal line, black is ground line) is
connected to any two ways of the 6-way lead.
Remarks: When connecting the BNC connector, pay attention to the
insertion direction and rotate the connector after insertion to prevent
accidental drop.
(2)
Insert the other ends (same color) of the connected two leads into the
bus terminal of the replaced sensor (select according to the male and
female type of the bus terminal).
4)
Start the diagnostic tool and access the corresponding sensor module. Tap
Sensor in the job menu.
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3.2 How to Operate
There are three types of sensors: DC, AC and frequency modulation PFM.
3.2.1 DC Sensor
*Remarks: The following waveform is a sample waveform, not the actual output
waveform. Users can refer to it to change the voltage to achieve the function.
1)
Water temperature sensor
Output port: CH1
Output type: DC voltage
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Drag the yellow slider to change the output voltage value of CH1 PEAK to
simulate the water temperature change.
*Remarks: 3v~5v in cold; after warm-up, it goes down to 1v; Negative temperature
coefficient sensor.
A simple confirmation method is that the water temperature sensor will link the
temperature-controlled fan, and when the voltage is adjusted to a certain
threshold, the rotation of the temperature-controlled fan will be started or
stopped.
2)
Intake temperature and pressure sensor
Output channel: CH1, CH2
Output type: DC voltage
CH1 PEAK: intake air temperature. Drag the yellow slider to change the output
voltage value of CH1 to simulate the intake air temperature change.
CH2 PEAK: intake air pressure. Drag the green slider to change the output
voltage value of CH2 to simulate the intake air pressure change.
3)
Intake pressure sensor
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