2009 CHERY TIGGO engine

Downloaded from www.Manualslib.com manuals search engine DTCDTC DEFINITION
P2123 Throttle/Pedal Position Sensor/Switch D Circuit High Input
P2127 Throttle/Pedal Position Sensor/Switch E Circuit Low Input
P2128 Throttle/Pedal Position Sensor/Switch E Circuit High Input
P2138 Accelerator Pedal Position Sensor Signal Correlation Error
P2177 System Too Lean off Idle
P2178 System Too Rich off Idle
P2187 System Too Lean at Idle
P2188 System Too Rich at Idle
P2195 O
2Sensor Signal Stuck Lean; Bank 1 Sensor 1
P2196 O
2Sensor Signal Stuck Rich; Bank 1 Sensor 1
P2270 O
2Sensor Signal Stuck Lean; Bank 1 Sensor 2
P2271 O
2Sensor Signal Stuck Rich; Bank 1 Sensor 2
U0001 High Speed CAN Defective
U0101 Lost Communication with ECM
U0104 Lost Communication with Cruise Control Module
U0121 Lost Communication with Anti-Lock Brake System (ABS) Control Module
U0155 Lost Communication with Instrument Panel Cluster Control Module
U0415 Invalid Data Received from ABS Control Module
DIAGNOSIS & TESTING
03
03–253Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine ECM Power Supply and Ground Circuit Test
Power Supply And Ground Circuit Diagnostic Check
DIAGNOSIS & TESTING
LTSMW030023T
03–254Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Check reference values between ECM terminals and ground under the following conditions:
ECM Power Supply Circuits
TERMINAL NO.ITEMCONDITIONDATA (DC VOLTAGE)
12 Battery -Battery Voltage (11 - 14 V)
13 Ignition switch Ignition switch: ON Battery Voltage (11 - 14 V)
Ignition switch: OFF Approximately 0 V
14 ECM main relay •
Ignition switch: OFF
• More than a few
seconds after turning ignition switch OFF Battery Voltage (11 - 14 V)
44 Power supply for ECM Ignition switch: ON Battery Voltage (11 - 14 V)
45
63
DIAGNOSIS & TESTING
03
03–255Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine DIAGNOSIS & TESTING
LTSMW030024T
03–256Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Check reference values between ECM terminals and ground under the following conditions:
ECM TERMINAL NO.ITEMCONDITIONDATA (DC VOLTAGE)
3 ECM ground (IGN) Ignition switch: ON Approximately 0 V
51 ECM ground (Signal) Ignition switch: ON Approximately 0 V
53 ECM ground (Signal) Ignition switch: ON Approximately 0 V
61 ECM ground (Power) Ignition switch: ON Approximately 0 V
80 ECM ground (Power) Ignition switch: ON Approximately 0 V
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.
• Start engine then select view data stream.
• If the data stream is detected, the condition is intermittent (See Diagnosis & Testing Diagnostic Help in Section
03 Electronic Engine Controls).
• If data stream is not detected, go to Diagnostic Procedure - Step 1.
1.INSPECTION START
• Start engine.
Is engine running?
Ye s>>Go to step 7.
No
>>Go to step 2.
2.CHECK ECM POWER SUPPLY CIRCUIT - (1)
• Turn ignition switch off and then on.
• Check voltage between ECM terminal 13 and
ground.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to step 4.
No
>>Go to step 3.
DIAGNOSIS & TESTING
LTSMD030061
03
03–257Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 3.DETECT MALFUNCTIONING PART
• Check the following:
Harness connectors C-103, E-103, terminal 14
Front fuse and relay box connector A
Fuse 17
• Check harness for open or short between ECM and fuse.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace malfunctioning part.
4.CHECK GROUND CONNECTIONS
• Turn ignition switch off.
• Loosen and retighten one ground screw on the body.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace ground connections.
5.CHECK ECM GROUND CIRCUIT FOR AN OPEN OR SHORT
• Disconnect ECM harness connector.
• Check harness continuity between ECM terminals 3, 51, 53, 61, 80 and ground.
• Continuity should exist.
• Check harness for short to power.
Is the check result normal?
Ye s>>Go to step 7.
No
>>Go to the next step.
6.DETECT MALFUNCTIONING PART
• Check harness for open or short between ECM terminals 3, 51, 53, 61, 80 and ground.
• Check harness for an open or short to power in harness or connectors.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace the circuit for an open or short to power in harness or connectors.
DIAGNOSIS & TESTING
03–258Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 7.CHECK ECM POWER SUPPLY CIRCUIT - (2)
• Turn ignition switch on and then off.
• Check voltage between ECM terminals 44, 45, 63
and ground.
• Voltage: Turn the ignition

switch on and battery
voltage should exist. Turning the ignition switch


OFF, battery voltage will exist for a few seconds,
then drop to approximately 0 V.
Is the check result normal?
Ye s>>Check the starting system.
No
>>Go to the next step.
8.CHECK THE STARTER RELAY CONTROL CIRCUIT
• Turn ignition switch OFF. Wait for at least 10 sec-
onds.
• Check voltage between ECM terminal 14 and


ground.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Go to step 10.
9.CHECK ECM POWER SUPPLY CIRCUIT - (3)
• Disconnect ECM harness connector.
• Disconnect front fuse and relay box harness connector F.
• Check harness continuity between ECM terminals 44, 45, 63 and front fuse and relay box terminal F3.
• Continuity should exist.
• Check harness for short to ground and short to power.
Is the check result normal?
Ye s>>Go to step 12.
No
>>Repair circuit for an open or short to power or short to ground in harness or connectors.
DIAGNOSIS & TESTING
LTSMD030062
LTSMD030063
03
03–259Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 10.CHECK STARTER RELAY CONTROL CIRCUIT
• Disconnect ECM harness connector.
• Disconnect front fuse and relay box harness connector A.
• Check harness continuity between ECM terminal 14 and front fuse and relay box terminal A1.
• Check harness continuity between front fuse and relay box terminal G2 and G5.
• Continuity should exist.
• Also check harness for short to ground and short to power.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for an open or short to ground or short to power in harness or connectors.
11 .CHECK FUSE
• Disconnect fuse 23 (10A), fuse 24 (5A) in front fuse and relay box.
• Check fuses.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace fuse 23 or 24.
12.CHECK FRONT FUSE AND RELAY BOX
• Check the front fuse and relay box for damage.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace front fuse and relay box.
13.REPLACE AND PROGRAM ECM
• Replace the ECM.
NOTE :
The Immobilizer control module must be matched to the new ECM (See ECM Removal & Installation in Section 03
Electronic Engine Controls).
DIAGNOSIS & TESTING
03–260Chery Automobile Co., Ltd.