Chery Tiggo. Manual — part 92
2.
1.8L ENGINE - CHECK INTAKE AIR TEMPERATURE (IAT) SENSOR ELECTRICAL CONNECTOR
• Disconnect the IAT sensor (1) (For 1.8L engine: IAT
sensor is built-into MAF sensor) electrical connec-
tor.
• Inspect the electrical connector for damage.
Is the electrical connector OK?
Yes
>>
Go to the next step.
No
>>
Repair or replace the electrical connector
as necessary.
3.
1.8L ENGINE - CHECK THE INTAKE AIR TEMPERATURE (IAT) SENSOR SIGNAL CIRCUIT
• Turn ignition switch on.
• Check reference voltage between IAT sensor termi-
nal 1 and ground in the IAT sensor electrical con-
nector E-009.
• 5 V should exist.
Is the check result normal?
Yes
>>
Go to Step 6.
No
>>
Repair circuit for an open or short to
power in harness or connectors.
DIAGNOSIS & TESTING
LTSMD030075
LTSMD030031
03
4.
1.6L ENGINE - CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR ELECTRICAL CONNECTOR
• Disconnect the MAP sensor (1) (For 1.6L engine:
IAT sensor is built-into MAP sensor) electrical con-
nector.
• Inspect the electrical connector for damage.
Is the electrical connector OK?
Yes
>>
Go to the next step.
No
>>
Repair or replace the electrical connector
as necessary.
5.
1.6L ENGINE - CHECK THE INTAKE AIR TEMPERATURE (IAT) SENSOR SIGNAL CIRCUIT VOLTAGE
• Check supply voltage between IAT sensor terminal
2 and ground in the IAT sensor electrical connector
E-033.
• 5 V should exist.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair circuit for an open or short to
power in harness or connectors.
6.
DETECT MALFUNCTIONING PART
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness for a short to ground between IAT connector terminal 1 and ECM connector E-001, terminal 42.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair circuit for a short to ground in harness or connectors.
DIAGNOSIS & TESTING
VISMD030201
LTSMD030056
7.
CHECK THE IAT SENSOR
• Connect IAT sensor connector.
• Connect ECM connector.
• Turn ignition switch on.
• Check signal between IAT sensor terminal 1 and ground under the following conditions:
IAT SENSOR
TERMINAL NO.
ITEM
CONDITION
DATA (DC
VOLTAGE)
1 (For 1.8L engine)
IAT sensor
Ignition switch: ON
IAT: 36°C
1.88 V
2 (For 1.6L engine)
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Replace IAT sensor.
8.
CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to ⬙DTC Confirmation Procedure⬙.
Is DTC P0112 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
P0113 - Intake Air Temperature Circuit High Input
DIAGNOSIS & TESTING
LTSMW030058T
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