Chery Tiggo. Manual — part 84
4.
DETECT MALFUNCTIONING PART
• Check the following:
With EOBD (1.6L and 1.8L)
− Fuse 25, fuse 12, fuse 27, fuse 24
− Front fuse and relay box H2, H5, F3, A1, A13, G5
− Harness between O
2
sensor and fuse
Without EOBD (1.6L)
− Fuse 23, fuse 12, fuse 27, fuse 22, fuse 25
− Front fuse and relay box H2, H5, H3, F3, A1, G2, G5
− Harness between O
2
sensor and fuse
Without EOBD (1.8L)
− Fuse 22, fuse 25, fuse 12, fuse 27, fuse 24
− Front fuse and relay box H2, H3, H5, F3, A1, A13, G5
− Harness between O
2
sensor and fuse
• Repair or replace if necessary.
• With the X-431 scan tool, read ECM DTCs.
• Refer to ⬙DTC Confirmation Procedure⬙.
Is DTC P0031 still present?
Yes
>>
Go to the next step.
No
>>
The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
5.
CHECK O
2
SENSOR HEATER CONTROL CIRCUIT FOR OPEN OR SHORT
• Turn ignition switch off.
• Disconnect ECM connector.
• Check harness continuity between ECM terminal and O
2
sensor terminal.
• Continuity should exist.
• Check sensor heater control circuit.
O
2
SENSOR
TERMINAL
ECM
Oxygen sensor
Upstream O
2
sensor heater
• 48 (With EOBD)
• 1 (Without EOBD)
1
•
c
Check harness short to ground.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace the circuit for an open or short in harness or connectors.
DIAGNOSIS & TESTING
03
6.
CHECK O
2
SENSOR HEATER
• Check the resistance between O
2
sensor heater terminals, component side.
TERMINAL NO.
RESISTANCE
1 and 2 (including cable
and connector)
Approximately 9
⍀
• Check the resistance between O
2
sensor terminals, component side.
TERMINAL NO.
RESISTANCE
1 and 3 & 4
⬁ ⍀ (Continuity
should not exist)
4 and 1 & 2
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Replace O
2
sensor.
7.
CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to ⬙DTC Confirmation Procedure⬙.
Is DTC P0031 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
P0032 - O
2
Sensor 1 Heater Control Circuit High
DIAGNOSIS & TESTING
LTSMW030054T
03
DIAGNOSIS & TESTING
LTSMW030055T
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