King Tool CanScan D900 User manual

CanScan
OWNER’S
MANUAL
The Easiest
And Best Way
To Troubleshoot
1996 and
Newer OBD2
Vehicles!

Table of Contents
Introduction...................................................................................................................................2
You Can Do It!...............................................................................................................................3
Safety Precautions.......................................................................................................................4
SAFETY FIRST!............................................................................................................................4
About the CanScan......................................................................................................................6
VEHICLES COVERED.................................................................................................................6
BATTERY REPLACEMENT..........................................................................................................7
ADJUSTMENTS AND SETTINGS................................................................................................7
CanScan Controls........................................................................................................................9
CONTROLS AND INDICATORS ..................................................................................................9
DISPLAY FUNCTIONS...............................................................................................................11
Onboard Diagnostics................................................................................................................12
COMPUTER ENGINE CONTROLS...........................................................................................12
OBD 2 Terminology....................................................................................................................16
DIAGNOSTIC TROUBLE CODES (DTCs) ................................................................................18
Preparation for Testing.............................................................................................................20
BEFORE YOU BEGIN................................................................................................................20
Using the CanScan....................................................................................................................21
CODE RETRIEVAL PROCEDURE............................................................................................21
ERASING DIAGNOSTIC TROUBLE CODES (DTCs)...............................................................27
D900 CanScan 1

Introduction
WHAT IS OBD?
Introduction
WHAT IS OBD?
The D900 CanScan is designed to work on all OBD 2 compliant vehicles.
All 1996 and newer vehicles (cars, light trucks and SUVs) sold in the
United States are OBD 2 compliant.
One of the most exciting improvements in
the automobile industry was the addition of
on-board diagnostics (OBD) on vehicles, or
in more basic terms, the computer that
activates the vehicle’s “CHECK ENGINE”
light. OBD 1 was designed to monitor
manufacturer-specific systems on vehicles
built from 1981 to 1995. Then came the
development of OBD 2, which is on all 1996
and newer vehicles sold in the U.S. Like its predecessor, OBD 2 was adopted
as part of a government mandate to lower vehicle emissions. But what makes
OBD 2 unique is its universal application for all late model cars and trucks –
domestic and import. This sophisticated program in the vehicle’s main
computer system is designed to detect failures in a range of systems, and can
be accessed through a universal OBD 2 port, which is usually found under the
dashboard. For all OBD systems, if a problem is found, the computer turns on
the “CHECK ENGINE” light to warn the driver, and sets a Diagnostic Trouble
Code (DTC) to identify where the problem occurred. A special diagnostic tool,
such as the D900 CanScan, is required to retrieve these codes, which
consumers and professionals use as a starting point for repairs.
D900 CanScan 2
To learn more about vehicle Computer Control Systems and OBD 2,
see COMPUTER ENGINE CONTROLS on page 12.

You Can Do It!
EASY TO USE - EASY TO VIEW
You Can Do It!
Easy To Use ....
¾Connect the CanScan to the vehicle’s test
connector.
¾Turn the ignition key "On.”
¾Press the LINK button.
Easy To View ....
¾The CanScan retrieves stored codes,
Freeze Frame data and I/M Readiness
status.
¾Codes, I/M Readiness status and Freeze
Frame data are displayed on the
CanScan’s LCD display screen. System
status is indicated by LED indicators.
Easy To Define ....
¾Read code definitions from the
CanScan’s LCD display.
¾View Freeze Frame data.
D900 CanScan 3

Safety Precautions
SAFETY FIRST!
Safety Precautions
SAFETY FIRST!
This manual describes common test procedures used by
experienced service technicians. Many test procedures require
precautions to avoid accidents that can result in personal injury,
and/or damage to your vehicle or test equipment. Always read your
vehicle's service manual and follow its safety precautions before and
during any test or service procedure. ALWAYS observe the following
general safety precautions:
To avoid personal injury, instrument damage and/or damage to
your vehicle; do not use the CAN OBD2 Code Reader before
reading this manual.
When an engine is running, it produces carbon monoxide, a
toxic and poisonous gas. To prevent serious injury or death
from carbon monoxide poisoning, operate the vehicle ONLY
in a well-ventilated area.
To protect your eyes from propelled objects as well as hot
or caustic liquids, always wear approved safety eye
protection.
When an engine is running, many parts (such as the coolant
fan, pulleys, fan belt etc.) turn at high speed. To avoid
serious injury, always be aware of moving parts. Keep a
safe distance from these parts as well as other potentially
moving objects.
Engine parts become very hot when the engine is running.
To prevent severe burns, avoid contact with hot engine
parts.
Before starting an engine for testing or trouble-shooting,
make sure the parking brake is engaged. Put the
transmission in park (for automatic transmission) or neutral
(for manual transmission). Block the drive wheels with
suitable blocks.
Connecting or disconnecting test equipment when the
ignition is ON can damage test equipment and the vehicle's
electronic components. Turn the ignition OFF before
connecting the CanScan to or disconnecting the CanScan
from the vehicle’s Data Link Connector (DLC).
D900 CanScan 4

Safety Precautions
SAFETY FIRST!
To prevent damage to the on-board computer when taking
vehicle electrical measurements, always use a digital
multimeter with at least 10 megOhms of impedance.
Fuel and battery vapors are highly flammable. To pre-vent
an explosion, keep all sparks, heated items and open
flames away from the battery and fuel / fuel vapors. DO
NOT SMOKE NEAR THE VEHICLE DUR-ING TESTING.
Don't wear loose clothing or jewelry when working on an
engine. Loose clothing can become caught in the fan,
pulleys, belts, etc. Jewelry is highly conductive, and can
cause a severe burn if it makes contact between a power
source and ground.
D900 CanScan 5

About the Code Reader
VEHICLES COVERED / BATTERY REPLACEMENT
About the CanScan
VEHICLES COVERED
The D900 CanScan is designed to work on all OBD 2 compliant vehicles. All
1996 and newer vehicles (cars and light trucks) sold in the United States are
OBD 2 compliant.
Federal law requires that all 1996 and newer cars and light trucks
sold in the United States must be OBD 2 compliant; this includes all
Domestic, Asian and European vehicles.
Some 1994 and 1995 vehicles are OBD 2 compliant. To find out if a 1994 or
1995 vehicle is OBD 2 compliant, check the following:
1. The Vehicle Emissions Control Information (VECI) Label. This label is
located under the hood or by the radiator of most vehicles. If the vehicle is
OBD 2 compliant, the label will state “OBD II Certified.”
2. Government Regulations require that all
OBD 2 compliant vehicles must have a
“common” sixteen-pin Data Link Connector
(DLC).
Some 1994 and 1995 vehicles have 16-pin connectors but are not
OBD 2 compliant. Only those vehicles with a Vehicle Emissions
Control Label stating “OBD II Certified” are OBD 2 compliant.
D900 CanScan 6

About the Code Reader
VEHICLES COVERED / BATTERY REPLACEMENT
Data Link Connector (DLC) Location
The 16-pin DLC is usually located under the
instrument panel (dash), within 12 inches
(300 mm) of center of the panel, on the
driver’s side of most vehicles. It should be
easily accessible and visible from a kneeling
position outside the vehicle with the door
open.
On some Asian and European vehicles the DLC is located behind
the “ashtray” (the ashtray must be removed to access it) or on the
far left corner of the dash. If the DLC cannot be located, consult the
vehicle’s service manual for the location.
BATTERY REPLACEMENT
1. Locate the battery cover on the back of the CanScan.
2. Slide the battery cover off (use your fingers).
3. Replace batteries with three AA-size batteries (for longer life, use
Alkaline-type batteries).
4. Reinstall the battery cover on the back of the CanScan.
ADJUSTMENTS AND SETTINGS
To enter the MENU Mode:
1. Press and hold the UP button, then press
and release the POWER/LINK button.
¾The adjustments and setting MENU
displays.
2. DO NOT release the UP button until the
adjustments and settings MENU is visible on
the display.
3. Make adjustments and settings as described in the following paragraphs.
D900 CanScan 7

About the Code Reader
VEHICLES COVERED / BATTERY REPLACEMENT
Adjusting Display Brightness
1. Use the UP and DOWN buttons, as
necessary, to highlight Adjust Brightness in
the MENU, then press the ENTER/FF
button.
¾The Adjust Brightness screen displays.
¾The Brightness field shows the current
brightness setting, from 1 to 10.
2. Press the UP button to decrease the brightness of the LCD display (make
the display darker)
3. Press the DOWN button to increase the brightness of the LCD display
(make the display lighter).
4. When the desired brightness is obtained, press the ENTER/FF button to
save your changes and return to the MENU.
Exiting the MENU Mode
1. Use the UP and DOWN buttons, as necessary, to highlight Menu Exit
in the MENU, then press the ENTER/FF button.
¾The LCD display returns to the DTC screen.
Changes made to Brightness will remain in the CanScan’s memory
as long as the batteries are not removed. If the batteries are
removed (or go dead), the settings will be lost from the CanScan’s
memory, and they must be reset again.
D900 CanScan 8

Code Reader Controls
CONTROLS AND INDICATORS
CanScan Controls
CONTROLS AND INDICATORS
Figure 1. Controls and Indicators
See Figure 1 for the locations of items 1 through 11, below.
1. ERASE button - Erases Diagnostic Trouble Codes (DTCs), and
“Freeze Frame” data from your vehicle’s computer, and resets Monitor status.
2. DTC SCROLL button - Displays the DTC View screen and/or scrolls
the LCD display to view DTCs when more than one DTC is present.
3. POWER/LINK button - When the CanScan IS NOT connected to a
vehicle, turns the CanScan “On” and “Off”. When the CanScan is connected
to a vehicle, links the CanScan to the vehicle’s PCM to retrieve diagnostic data
from the computer’s memory.
4. ENTER/FREEZE FRAME button - When in MENU mode, confirms
the selected option or value. When retrieving and viewing DTCs, displays
Freeze Frame data for the highest priority code.
D900 CanScan 9