Chery Tiggo. Manual - part 153
• Continuity should exist.
• Check harness short to power supply circuit.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace circuit for an open or short to power in harness or connectors.
5.
CHECK O
2
SENSOR
• Connect O
2
sensor connector.
• Connect ECM connector.
• If with the X-431, refer to data stream value.
• If without the X-431, as following procedure:
− Start engine and warm it up to normal operating temperature 350°C.
− Turn ignition switch off.
− Start engine and keep the engine speed between 3,500 and 4,000 RPM for at least 1 minute.
− Let engine idle for 1 minute.
− Set digital multimeter probes between ECM terminal 4 and ground.
CHECK
ITEM
CHECK CONTENT
NORMAL
VALUE
Oxygen
sensor
• Warm-up
condition
• Become
lean while
decelerate
Decelerate
from 4,000
RPM
suddenly
Below 100
mV
• Warm-up
condition
• Become
rich while
accelerate
Accelerate
suddenly
Approximately
600 - 900 mV
• Warm-up
condition
• Check with
O
2
sensor
signal
Idle
100 - 900 mV
2500 RPM
Approximately
600 - 900 mV
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Replace O
2
sensor.
6.
CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to ⬙DTC Confirmation Procedure⬙.
Is DTC P0132 still present?
Yes
>>
Replace the ECM.
NOTE : The Immobilizer control module must be matched to the new ECM (See ECM Removal & Instal-
lation in Section 03 Electronic Engine Controls).
No
>>
The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
DIAGNOSIS & TESTING
03