2009 CHERY TIGGO ignition

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 2.0L 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 TPS SENSOR ELECTRICAL CONNECTOR
• Disconnect the TPS electrical connector (1).
• 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
03–312Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 3.CHECK THE TPS POWER SUPPLY CIRCUIT
• Turn ignition switch on.
• Check throttle position sensor supply voltage
between sensor terminal 3 and ground in the sen-
sor electrical connector E-027.
• 5.0 V should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for an open or short to
ground in harness or connectors.
If harness is normal, 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).
4.CHECK TPS SIGNAL CIRCUIT FOR AN OPEN OR SHORT
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between following terminals.
TPS TERMINAL ECM TERMINAL
65 4
53 8
• Continuity should exist.
• Check harness for a short to power.
Is the check result normal?
Ye s>>Go to step 6.
No
>>Go to the next step.
5.DETECT MALFUNCTIONING PART
• Check harness for an open or a short to ground between TPS connector terminal 2 and ECM connector E-001,
terminal 78.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace harness or connectors.
DIAGNOSIS & TESTING
LTSMD030035
03
03–313Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK TPS RESISTANCE
• Check resistance between TPS terminal 2 and terminal 3.
• 2k ± 20 % (20°C) should exist.
• Check the resistance between TPS terminal 6 and terminal 2 while moving the throttle.
• The resistance should be a linear change.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace TPS.
Perform TPS self-learning.
7.CHECK THE TPS
• Turn ignition switch off.
• Connect ECM connector.
• Connect TPS connector.
• Turn ignition switch on.
• Check voltage between TPS terminal 3 and ground under the following conditions:
TERMINAL NO. 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 pressed 0.72 V
54 Electronic throttle
control actuator
(position sensor) •
Engine stopped
• Accelerator pedal:
Fully released 0.74 V
• Engine stopped
• Accelerator pedal:
Fully depressed 4.62 V
64 Motor 4
-12Vor0V
65 Motor 3
66 Motor 2
12Vor0V
67 Motor 1
78 Sensor (GND) Approximately 0 V
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace the TPS.
Perform the TPS self-learning.
DIAGNOSIS & TESTING
03–314Chery 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
64 Motor 4
-12Vor0V
65 Motor 3
66 Motor 2
12Vor0V
67 Motor 1
78 Sensor (GND) Approximately 0 V
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
P0123 Throttle position
sensor A circuit high input •
Ignition switch:
ON
• Engine: Running Signal output is
above maximum
acceptable range for
a few seconds
continuously. •
TPS or
misalignment
• 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.
DIAGNOSIS & TESTING
03
03–317Chery 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 2.0L 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 TPS SENSOR ELECTRICAL CONNECTOR
• Disconnect the TPS electrical connector (1).
• 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
03–318Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 3.CHECK THE TPS POWER SUPPLY CIRCUIT
• Turn ignition switch on.
• Check supply voltage between TPS terminal 3 and
ground in the TPS electrical connector E-027.
• 5 V should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for a short to power in har-
ness or connectors.
If harness is normal, 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).
4.CHECK TPS SIGNAL CIRCUIT FOR A SHORT
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness for short to power.
Is the check result normal?
Ye s>>Go to step 6.
No
>>Go to the next step.
5.CHECK THE TPS GROUND CIRCUIT FOR AN OPEN OR SHORT
• Check harness continuity between following terminals.
TPS TERMINAL ECM TERMINAL
27 8
• Continuity should exist.
• Check harness for short to power.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair open circuit or short to power in harness or connectors.
DIAGNOSIS & TESTING
LTSMD030035
03
03–319Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK THE TPS RESISTANCE
• Check resistance between the TPS terminal 2 and terminal 3.
• 2k ± 20 % (20°C) should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace the TPS.
Perform the TPS self-learning.
7.CHECK THE TPS
• Turn ignition switch off.
• Connect ECM connector.
• Connect TPS connector.
• Turn ignition switch on.
• Check voltage between TPS terminal 3 and ground under the following conditions:
ECM TERMINAL
NO. 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
64 Motor 4
-12Vor0V
65 Motor 3
66 Motor 2
12Vor0V
67 Motor 1
78 Sensor (GND) Approximately 0 V
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace the TPS.
Perform TPS self-learning.
DIAGNOSIS & TESTING
03–320Chery 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)
18 Upstream oxygen sensor •
Engine is running
• Warm-up condition Approximately 0.1 - 0.9 V
(change5-8times in 10 seconds periodically)
28 Downstream oxygen
sensor heating (with EOBD) --
36 Oxygen sensor signal
ground •
Warm-up condition
• Idle Approximately 0 V
48 Upstream oxygen sensor
heating (with EOBD) --
55 Downstream oxygen
sensor •
Engine is running
• Warm-up condition Approximately 100 mV
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION POSSIBLE CAUSE
P0132 O
2sensor 1 (upstream)
circuit high voltage Engine is running•
Fuel quality
• Oxygen Sensor 1
(upstream)
• 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 ignition switch off and wait at least 10 seconds.
• Start engine and keep the engine speed 2000 RPM for at least 1 minute.
• Let engine idle for 2 minutes.
• Select view data stream and 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
03–323Chery Automobile Co., Ltd.