Chery Tiggo. Manual — part 367
DIAGNOSIS & TESTING
LTSMW120007T
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO.
DTC DEFINITION
DTC DETECTION
CONDITION
DTC SET
CONDITION
POSSIBLE CAUSE
C1209
Right rear wheel
speed sensor circuit
open or shorted
• Ignition switch:
ON
• Vehicle: Running
ABS module
detected that the
Right Rear wheel
speed sensor input
signal to ABS
module is open or
shorted.
• Right Rear wheel
speed sensor
• Harness is open or
shorted
• ABS module
DTC Confirmation Procedure:
Before performing the following procedure, confirm that battery voltage is more than 12 V.
• Turn ignition switch off.
• Connect the X-431 scan tool to the Data Link Connector (DLC) - use the most current software available.
• Turn ignition switch on.
• With the scan tool, record and erase stored DTCs in the ABS module.
• Cycle the ignition switch from off to on.
• Start the engine and warm it to normal operating temperature.
• Turn ignition switch off and wait for a few seconds.
• Start the engine. With the scan tool connected to the DLC, drive the vehicle over 40 km/h (25 mph).
NOTE :
Vehicle must be driven above 40 km/h (25 mph) for fault setting conditions to be met.
• With the scan tool select: View ABS Data Stream and DTC.
• If the DTC is detected, the DTC condition is current. Go to Diagnostic Procedure - Step 1.
• If the DTC is not detected, the DTC condition is intermittent (See Diagnostic Help and Intermittent DTC Trou-
bleshooting in Section 12 Brakes for more information).
• Erase all codes and test drive the vehicle to verify the repair is complete.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
Diagnostic Procedure
1.
CHECK ABS MODULE DTC
• With the scan tool select: View ABS Data Stream.
• With an assistant driving the vehicle, check the following data stream list items while driving the vehicle over 40
km/h (25 mph).
−
Left Front Wheel Speed
−
Right Front Wheel Speed
−
Left Rear Wheel Speed
−
Right Rear Wheel Speed
• With the scan tool, read active DTCs in the ABS module.
Is DTC C1209 present and the Right Rear Wheel Speed signal abnormal?
Yes
>>
Go to the next step.
No
>>
The condition that caused this DTC to set is currently not present (See Diagnostic Help and Intermit-
tent DTC Troubleshooting in Section 12 Brakes for more information).
DIAGNOSIS & TESTING
12
2.
CHECK RIGHT REAR WHEEL SPEED SENSOR ELECTRICAL CONNECTOR
• Turn ignition switch off.
• Disconnect the wheel speed sensor (1) electrical connector.
• Inspect the wheel speed sensor electrical connector.
Is the electrical connector OK?
Yes
>>
Go to the next step.
No
>>
Repair or replace the electrical connector as necessary.
3.
CHECK RIGHT REAR WHEEL SPEED SENSOR REFERENCE SIGNAL CIRCUIT
• Turn ignition switch on.
• Measure the sensor reference voltage between ter-
minal 2 of the wheel speed sensor connector, ter-
minal side and ground.
• Voltage should exist (2.0 - 4.0 V).
Is the proper voltage present?
Yes
>>
Go to the next step.
No
>>
Repair or replace the circuit for an open,
short to ground or short to battery in connector or
harness.
4.
CHECK RIGHT REAR WHEEL SPEED SENSOR RESISTANCE
• Check the wheel speed sensor resistance between
the sensor terminals 1 and 2, component side.
Is the sensor resistance 700 - 1500 ohms?
Yes
>>
Go to the next step.
No
>>
Replace the Right Rear wheel speed
sensor.
5.
CHECK RIGHT REAR WHEEL SPEED SENSOR GROUND CIRCUIT FOR AN OPEN
• Turn ignition switch off.
• Disconnect the ABS module electrical connector.
• For 1.6L/1.8L engine: Check the continuity between terminal 22 of the ABS module connector E-002, and termi-
nal 1 of the Right Rear wheel speed sensor connector B-022, terminal side.
• For 2.0L/2.4L engine: Check the continuity between terminal 22 of the ABS module connector A-020, and termi-
nal 1 of the Right Rear wheel speed sensor connector B-022, terminal side.
• Continuity should exist.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace the circuit for an open.
DIAGNOSIS & TESTING
LTSMD120003
VISMD120005
6.
CHECK RIGHT REAR WHEEL SPEED SENSOR GROUND CIRCUIT FOR A SHORT TO GROUND
• Check the continuity between terminal 1 of the Right Rear wheel speed sensor connector, terminal side and
ground.
• Continuity should not exist.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace the circuit for a short to ground.
7.
CHECK RIGHT REAR WHEEL SPEED SENSOR GROUND CIRCUIT FOR A SHORT TO VOLTAGE
• Check the voltage between terminal 1 of the Right Rear wheel speed sensor connector, terminal side and
ground.
• Voltage should not exist.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace the circuit for a short to battery.
8.
CHECK DTC
• With the X-431 scan tool, read the ABS module DTCs.
• Refer to ⬙DTC Confirmation Procedure⬙.
Is DTC C1209 present?
Yes
>>
Replace the ABS module (See ABS Module Removal & Installation in Section 12 Brakes).
No
>>
The system is now operating properly.
Erase all codes and test drive the vehicle to verify the repair is complete.
DIAGNOSIS & TESTING
12
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