CHERY TIGGO 2009 Service Repair Manual

Downloaded from www.Manualslib.com manuals search engine 7.CHECK THE MAP SENSOR SIGNAL
• Check MAP sensor signal between sensor terminal 4 and ground.
TERMINAL
NO. ITEM
CONDITION DATA (DC
VOLTAGE)
4 MAP
sensor Engine:
Running •
Press
accelerator
pedal slowly. Approximately
1.3 V
• Press
accelerator
pedal quickly. Up to
approximately
4V
(instantaneous)
Is the check result normal?
Ye s>>Go to step 9.
No
>>Go to the next step.
8.CHECK AND REPLACE THE MAP SENSOR
• Check sensor as follow.
Remove the sensor.
Visually check and clean the pressure entrance of the sensor for chipping.
Is the check result normal?
Ye s>>Replace the MAP sensor with a known good MAP sensor.
Select view DTC on the X-431 screen.
If DTC P0107 or P0108 is not current present, the system is OK.
If DTC P0107 or P0108 is current present, go to step 9.
No
>>Clear or replace the MAP sensor.
9.CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC P0107 or P0108 still present?
Ye s>>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
03–77Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine P0112 - Intake Air Temperature Circuit Low Input
DIAGNOSIS & TESTING
LTSMW030052T
03–78Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine DIAGNOSIS & TESTING
LTSMW030058T
03
03–79Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Check reference values between ECM terminals and ground under the following conditions:
ECM TERMINALNO. ITEM
CONDITION DATA (DC
VOLTAGE)
17 Sensor (GND) Ignition switch: ON 0 V
42 Intake Air
Temperature (IAT) sensor Ignition switch: ON Intake Air
Temperature (IAT): 36°C 1.88 V
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
P0112 Intake Air
Temperature (IAT) circuit low input •
Ignition switch:
ON
• Engine: Running Output signal is
wrong or out of
acceptable range. •
IAT sensor
• Harness or
connectors
• ECM
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 ECM.
• Start engine and warm it to normal operating temperature, then select view DTC and data stream.
• 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 03 Electronic Engine Controls for more information.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
Diagnostic Procedure
1.CHECK GROUND CONNECTIONS
• Turn ignition switch off.
• Loosen and retighten ground screws on the body (See Ground Inspection in Section 03 Electronic Engine Con-
trols).
• Inspect ground connections E-207 and E-208 mounting position (See Vehicle Wiring Harness Layout - Engine
Room Harness (With 1.6L/1.8L Engine) in Section 16 Wiring).
Are the ground connections OK?
Ye s>>For 1.8L engine go to next step.
For 1.6L engine go to Step 4.
No
>>Repair or replace ground connections.
DIAGNOSIS & TESTING
03–80Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 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?
Ye s>>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?
Ye s>>Go to Step 6.
No
>>Repair circuit for an open or short to
power in harness or connectors.
DIAGNOSIS & TESTING
LTSMD030075
LTSMD030031
03
03–81Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 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?
Ye s>>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?
Ye s>>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?
Ye s>>Go to the next step.
No
>>Repair circuit for a short to ground in harness or connectors.
DIAGNOSIS & TESTING
VISMD030201
LTSMD030056
03–82Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 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?
Ye s>>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?
Ye s>>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
03–83Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine P0113 - Intake Air Temperature Circuit High Input
DIAGNOSIS & TESTING
LTSMW030058T
03–84Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine DIAGNOSIS & TESTING
LTSMW030052T
03
03–85Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Check reference values between ECM terminals and ground under the following conditions:
ECM TERMINALNO. ITEM
CONDITION DATA (DC
VOLTAGE)
17 Sensor (GND) Ignition switch: ON 0 V
42 Intake Air
Temperature (IAT) sensor Ignition switch: ON IAT: 36°C
Approximately 1.88
V
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION SET CONDITION POSSIBLE CAUSE
P0113 Intake Air
Temperature (IAT) circuit high input •
Ignition switch:
ON
• Engine: Running Output signal is
wrong or out of
acceptable range. •
IAT sensor
• Harness or
connectors
• ECM
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 ECM.
• Start engine and warm it to normal operating temperature, then select view DTC and data stream.
• 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 03 Electronic Engine Controls for more information.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
Diagnostic Procedure
1.CHECK GROUND CONNECTIONS
• Turn ignition switch off.
• Loosen and retighten ground screws on the body (See Ground Inspection in Section 03 Electronic Engine Con-
trols).
• Inspect ground connections E-207 and E-208 mounting position (See Vehicle Wiring Harness Layout - Engine
Room Harness (With 1.6L/1.8L Engine) in Section 16 Wiring).
Are the ground connections OK?
Ye s>>For 1.8L engine go to next step.
For 1.6L engine go to Step 4.
No
>>Repair or replace ground connections.
DIAGNOSIS & TESTING
03–86Chery Automobile Co., Ltd.