2009 CHERY TIGGO immobilizer

Downloaded from www.Manualslib.com manuals search engine 8.CHECK THE MAF SENSOR
• Install all removed parts.
• Start engine.
• Check air flow signal in data stream with the X-431.
TERMINAL
NO. ITEM CONDITION D ATA
(AVERAGE DC
VOLTAGE)
37 Air
flow
sensor •
Engine is
running
• ECT: 78°C
• Idle: 795
RPM
• IAT: 36°C
• IAT signal:
1.88 V Approximately
322 kg/h
Approximately 1.39 V
•If without the X-431, check voltage between MAF sensor terminal 5 and ground.
TERMINAL
NO. ITEM CONDITION D ATA
(AVERAGE DC
VOLTAGE)
37 Air
flow
sensor •
Engine is
running
• ECT: 78°C
• Idle: 795
RPM
• IAT: 36°C
• IAT signal:
1.88 V Approximately
1.39 V
Is the signal voltage of MAF normal?
Ye s>>Go to the next step.
No
>>Replace the MAF sensor.
9.CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC P0103 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
03–67Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 7.CHECK 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 •
Engine
running: Idle
• 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 THE MAP SENSOR
• Check sensor as follow:
Remove the sensor.
Visually check and clean the pressure entrance of the sensor for chipping and damage.
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 P0105 or P0106 is not current present, the system is OK.
If DTC P0105 or P0106 is current present, go to step 8.
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 P0105 or P0106 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
03–72Chery Automobile Co., Ltd.

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 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 7.CHECK THE IAT SENSOR
• Connect IAT sensor connector.
• Connect ECM connector.
• Turn ignition switch on.
• Check signal between the IAT sensor terminal 1 and ground under the following conditions:
TERMINAL NO. ITEM CONDITION DATA (DC
VOLTAGE)
42 IAT sensor Ignition switch: ON IAT: 78°C Approximately
1.88 V
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace the IAT sensor.
8.CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC P0113 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
03–90Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.DETECT MALFUNCTIONING PART
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness for short to ground between ECT sensor connector terminal 2 and ECM connector terminal 39.
Is the check result normal?
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
>>Repair or replace circuit for a short to ground in harness or connectors.
5.CHECK THE ECT SENSOR
• Check the resistance between ECT sensor terminal 1 and 2, component side.
ECT°C RESISTANCE K
-10°C 8.62 - 10.28
20°C 2.37 - 2.63
80°C 0.299 - 0.345
• Connect the ECT sensor connector.
• Connect the ECM connector.
• Turn ignition switch on.
• Check ECT sensor signal output.
ECT TERMINAL
NO. ITEM
CONDITION DATA (DC
VOLTAGE)
39 ECT sensor
Ignition switch on ECT: 59°C
1.89 V
ECT: 78°C 1.25 V
ECT: 90°C 0.94 V
17 Sensor (GND) -Approximately 0 V
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace ECT sensor.
DIAGNOSIS & TESTING
03–94Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC P0117 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
03–95Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 2.CHECK ECT SENSOR ELECTRICAL CONNECTOR
• Disconnect the ECT sensor (1) electrical connector.
• 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.CHECK THE ENGINE COOLANT TEMPERATURE SENSOR SIGNAL CIRCUIT FOR AN OPEN AND SHORT
• Turn ignition switch on.
• Check ECT sensor reference voltage between sen-
sor terminal 2 and ground in the sensor electrical
connector E-019.
• 5 V should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace harness for an open or
short to power between ECT connector
terminal 2 and ECM connector E-001, ter-
minal 39.
If harness is normal, 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).
4.CHECK ECT SENSOR GROUND CIRCUIT FOR AN OPEN AND SHORT TO POWER
• Check harness continuity between following terminals.
ECT
SENSOR
CONNECTOR TERMINAL ECM
CONNECTOR TERMINAL CONTINUITY
11
7Yes
DIAGNOSIS & TESTING
BESM030019
LTSMD030032
03–98Chery Automobile Co., Ltd.