2009 CHERY TIGGO ignition

Downloaded from www.Manualslib.com manuals search engine 6.CHECK EVAP CANISTER CONTROL VALVE CONTROL CIRCUIT FOR AN OPEN
• Check voltage between EVAP canister control valve terminal 2 and ground.
• Approximately 3.6 V should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace open circuit in harness or connectors.
If harness is normal, go to the next step.
7.CHECK EVAP CANISTER CONTROL VALVE
• Turn ignition switch off.
• Remove EVAP canister control valve.
• Check resistance as table shown.
EVAP CANISTER
CONTROL VALVE TERMINAL NO. RESISTANCE

(20°C)
1 & 2 Approximately 26 
• Check air passage continuity and operation when apply 12 V current supply voltage between terminal 1 and 2.
• The check results should match specification.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace EVAP canister control valve.
8.CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC P0444 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
03–190Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine P0506 - Idle Control System RPM Lower Than Expected
•Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
P0506 Idle control system
RPM lower than expected •
Engine is running.
• With the engine
idling in drive, the
brake applied,
engine run time
below a calibrated
minimum value, and
no VSS, MAF/MAP,
ECT, TPS, ETC,
Crankshaft Position
sensor, fuel system,
or injector DTCs
present. ECM detected that
the idle speed is less than the
acceptable range. •
Electronic throttle
control actuator
• Intake air leak
• 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 up to the 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 :
If DTC P0506 is displayed with other DTCs, perform this diagnostic procedure before other DTCs.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
03
03–191Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine P0601 - Internal Control Module Memory Check Sum Error
P0604 - Internal Controller Module Random Access Memory (RAM) Error
P0605 - Internal Controller Module ROM Test Error
P0606 - ECM Processor
•Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION POSSIBLE CAUSE
P0601 Internal control module
memory check sum error
ECM detected an internalfailure. •
ECM
P0604 Internal control module
Random Access Memory (RAM) error
P0605 Internal control module
ROM test error
P0606 ECM processor
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.
• Run engine for a while 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
03–193Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine P0602 - ECM Programming Error
•Self-diagnosis detection logic.
DTC NO. DTC DEFINITION POSSIBLE CAUSE
P0602 ECM programming error •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.
• Run engine for a while 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 DTC
• Perform DTC confirmation procedure.
Is DTC P0602 present?
Ye s>>Go to the next step.
No
>>The DTC condition is intermittent (See Diagnostic Help in Section 03 Electronic Engine Controls).
2.CHECK ECM POWER SUPPLY AND GROUND
• Check if the ECM supply voltage circuit, ground circuit open, high resistance or short circuits existing.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for open or short in harness and connectors.
3.MATCH ECM
• With the scan tool X-431, match the ECM before replacing it (See ECM Removal & Installation in Section 03
Electronic Engine Controls), and view the DTC with the X-431.
Is DTC P0602 still present?
Ye s>>Go to the next step.
No
>>The DTC was caused by a programming error.
DIAGNOSIS & TESTING
03
03–195Chery 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)
69 Air compressor relay •
After engine has been
started for 5 seconds, A/C
can be turned on.
• If IAT is above 140.3°C ,
A/C will be shut off.
• If ECT is above
140.3°C, A/C will be shut
off. If ECT is below
111.8°C, A/C will resume.
• If A/C high side
pressure is above 20.0
bar, A/C will be shut off. If
A/C high side pressure is
below 19.5 bar, A/C will
resume.
• If evaporator
temperature is below
1.5°C, A/C will be shut off.
If evaporator temperature
is above 4.5°C, A/C will
resume.
• If system voltage is
below 8.04 V, A/C will be
shut off. If system voltage
is above 10.01 V, A/C will
resume. 0Vor12V
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
P0645 A/C clutch relay
circuit Engine is running ECM detected that
the input signal is
out of the
acceptable range. •
Fuse
• A/C compressor
relay
• 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 up to the normal operating temperature.
• Turn A/C switch on 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
03–199Chery 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 A/C CLUTCH RELAY CONTROL CIRCUIT
• Turn off A/C switch.
• Check A/C clutch relay control circuit supply voltage
between ECM terminal 69 and ground in the ECM
electrical connector E-001.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to step 4.
No
>>Go to the next step.
3.DETECT MALFUNCTIONING PART
• Check the following:
Fuse FB18, SB2
Front fuse and relay box K, E, J
A/C compressor relay, EMS relay (R2)
Check harness for an open or short between ECM terminal 69 and fuse 12.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace malfunctioning part.
DIAGNOSIS & TESTING
LTSMD030065
03–200Chery 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)
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
12Vor0V
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
P1545 Throttle position
control malfunction 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
• 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 up to the 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
03–204Chery 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 harness or 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
03–205Chery Automobile Co., Ltd.