2009 CHERY TIGGO check engine

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)
32 Regulated sensor
supply 2
Ignition switch: ON -
Approximately 5 V
38 Electronic throttle
control actuator
(Position sensor) •
Engine stopped
• Accelerator pedal:
Fully released 4.24 V
• Engine stopped
• Accelerator pedal:
Fully depressed 0.72 V
54 Electronic throttle
control actuator •
Engine stopped
• Accelerator pedal:
Fully released 0.74 V
• Engine stopped
• Accelerator pedal:
Fully depressed 4.62 V
78 Sensor (GND)
-Approximately 0 V
64 Motor 4
0 V or 12 V
65 Motor 3
66 Motor 2
12Vor0V
67 Motor 1
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION
POSSIBLE CAUSE
P0221 Throttle Position
Sensor (TPS) B performance Ignition switch on or
after engine start Rationally incorrect
voltage is sent to
ECM compared with
the signals from
TPS1 and TPS2. •
Electronic throttle
control actuator
(TPS1 and TPS2)
• Harness or
connectors (The
sensor signal circuit
is open or shorted)
• Accelerator pedal
position sensor 2
• 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.
• If DTC is detected, go to Diagnostic Procedure - Step 1.
• If the DTC is not detected, the DTC condition is intermittent (See Diagnosis & Testing Diagnostic Help in Sec-
tion 03 Electronic Engine Controls).
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
03
03–151Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 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>>Go to the next step.
No
>>Repair or replace ground connections.
2.CHECK THROTTLE POSITION SENSOR (TPS) ELECTRICAL CONNECTOR
• Disconnect the TPS (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.
DIAGNOSIS & TESTING
VISMD030203
03–152Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 3.CHECK THE THROTTLE POSITION SENSOR (TPS) POWER SUPPLY CIRCUIT
• Turn ignition switch on.
• Check TPS supply voltage between TPS terminal 3
and ground in the TPS electrical connector E-027.
• Approximately 5 V should exist.
Is the check result normal?
Ye s>>Go to step 8.
No
>>Go to the next step.
4.CHECK THE TPS POWER SUPPLY CIRCUIT
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between TPS terminal 3 and ECM terminal 32.
• Continuity should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace circuit for an open.
If the circuit is normal, go to the next step.
5.CHECK THE TPS AND THE ACCELERATOR PEDAL POSITION (APP) SENSOR POWER SUPPLY CIRCUIT
• Check harness for short to power and short to ground between following terminals.
ECM TERMINAL TPS/APS TERMINAL
32 TPS terminal 3
32 APP sensor terminal 3
33 APP sensor terminal 6
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for short to ground or short to power in harness or connectors.
DIAGNOSIS & TESTING
LTSMD030035
03
03–153Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK THE APP SENSOR
• Connect all harness connectors disconnected.
• Turn ignition switch on.
• Check voltage between ECM terminals 16 (APP sensor 1 signal), 40 (APP sensor 2 signal) and ground under
the following conditions:
ECM
TERMINAL NO. APP
SENSOR
TERMINAL ITEM
CONDITION VOLT (DC
VOLTAGE)
16 APP
sensor
terminal 4 Accelerator
Pedal
Position
Sensor 1 (APPS1)
Turn
ignition
switch on •
Engine
stopped
•
Accelerator
pedal:
Fully
released 0.72 -
0.74 V
• Engine
stopped
•
Accelerator
pedal:
Fully
depressed 3.95 V
40 APP
sensor
terminal 1 Accelerator
Pedal
Position
Sensor 2 (APPS2) •
Engine
stopped
•
Accelerator
pedal:
Fully
released 0.36 -
0.37 V
• Engine
stopped
•
Accelerator
pedal:
Fully
depressed 1.97 V
Is the check result normal?
Ye s>>Go to step 10.
No
>>Replace the Accelerator Pedal Assembly (See Accelerator Pedal Position Sensor Removal & Installation
in Section 03 Electronic Engine Controls).
7.CHECK THE TPS SIGNAL CIRCUIT FOR AN OPEN AND SHORT
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between electronic throttle control actuator terminal 5 and ECM terminal 38.
• Continuity should exist.
• Also check harness for a short to power and short to ground.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for an open or short to power or short to ground in harness or connectors.
DIAGNOSIS & TESTING
03–154Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 8.CHECK THE TPS SENSOR GROUND CIRCUIT FOR AN OPEN AND SHORT
• Check harness continuity between electronic throttle control actuator terminal 2 and ECM terminal 78.
• Continuity should exist.
• Check harness for short to power and short to ground.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace circuit for an open or short to power or short to ground in harness or connectors.
9.CHECK TPS
• Connect all harness connectors disconnected.
• Turn ignition switch on.
• Check voltage between TPS terminals 6 (TPS1) and ground, terminal 5 (TPS2) and ground under the following
conditions:
TPS
TERMINAL NO. ITEM
CONDITION VOLTAGE
(DC
VOLTAGE)
5 Throttle
Position
Sensor 2 (TPS2)
Ignition
switch: ON •
Engine
stopped
•
Accelerator
pedal:
Fully
released 4.24 V
• Engine
stopped
•
Accelerator
pedal:
Fully
depressed 0.72 V
6 Throttle
Position
Sensor 1 (TPS1) •
Engine
stopped
•
Accelerator
pedal:
Fully
released 0.74 V
• Engine
stopped
•
Accelerator
pedal:
Fully
depressed 4.62 V
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace electronic throttle control actuator, and perform throttle valve position learning.
DIAGNOSIS & TESTING
03
03–155Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 10.CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC P0221 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
03–156Chery 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 (AVERAGE DC
VOLTAGE)
6 Injector 2
•Engine is running
• Warm-up condition
• Idle
• Accelerate suddenly Voltage: 11 - 14 V
7
Injector 3
27 Injector 1
47 Injector 4
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION POSSIBLE CAUSE
P0261 Cylinder 1 - Injector Circuit
Low
Engine is running •
Injector
• Harness or connectors
• ECM
P0264
Cylinder 2 - Injector Circuit
Low
P0267 Cylinder 3 - Injector Circuit
Low
P0270 Cylinder 4 - Injector Circuit
Low
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.
• If DTC is detected, go to Diagnostic Procedure - Step 1.
• If the DTC is not detected, the DTC condition is intermittent (See Diagnosis & Testing Diagnostic Help in Sec-
tion 03 Electronic Engine Controls).
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>>Go to the next step.
No
>>Repair or replace ground connections.
DIAGNOSIS & TESTING
03
03–159Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 2.INSPECTION START
• Start engine.
Is any cylinder ignited?
Ye s>>If with the X-431, go to the next step.
If without the X-431, go to step 4.
No
>>Go to step 5.
3.PERFORM ACTIVE TEST FUNCTION
• Select ACTIVE TEST menu.
• Perform injector active test.
• Make sure that each test produces a momentary engine speed drop.
Is the check result normal?
Ye s>>Go to step 10.
No
>>Go to step 5.
4.CHECK FUNCTION OF INJECTOR
• Listen to injector operating sound one by one.
Do all injectors clicking noise exist?
Ye s>>Go to step 10.
No
>>Go to the next step.
5.CHECK INJECTOR ELECTRICAL CONNECTOR
• Disconnect the Injector (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.
DIAGNOSIS & TESTING
BESM040006
03–160Chery Automobile Co., Ltd.