2009 CHERY TIGGO sensor

Downloaded from www.Manualslib.com manuals search engine On Board Diagnostic Logic
•Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
U040F Temperature sensor
open circuit or
shorted to supply
Turn ignition switchon The Instrument
Cluster (IC) detects
the temperature
sensor (for
instrument cluster)
circuit open or
shorted to supply
condition.
•
Coolant
temperature sensor
(For Instrument
Cluster)
• Harness or
connectors (The
sensor circuit is open
or short to supply)
• Instrument cluster
U040F Temperature sensor
shorted to ground The Instrument
Cluster (IC) detects
the temperature
sensor (for
instrument cluster)
circuit shorted to
ground condition.•
Coolant
temperature sensor
(For instrument
cluster)
• Harness or
connectors (The
sensor circuit is short
to ground)
• Instrument cluster
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 and record and erase DTC.
• Start engine and warm it up to the normal operating temperature.
• Select view DTC and data stream.
• If the DTC is detected, the 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 15 Body & Accessories for more information).
NOTE :
Before performing any DTC diagnostic procedures, verify the IC power and ground circuits are properly connected.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
15
15–73Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Diagnostic Procedure
1.CHECK DTC
• Turn ignition switch on, with the scan tool, view and erase stored DTCs in the IC module.
• Turn ignition switch off, and wait a few seconds, then turn ignition switch on.
• With the scan tool, view active DTCs in the IC module.
Is DTC U040F present?
Ye s>>Go to the next step.
No
>>The conditions that caused this DTC to set are not present at this time (See Intermittent DTC Trouble-
shooting in Section 15 Body & Accessories for more information).
2.CHECK COOLANT TEMPERATURE SENSOR (FOR INSTRUMENT CLUSTER) ELECTRICAL CONNECTOR
• Turn ignition switch off.
• Disconnect the coolant temperature sensor (for
instrument cluster) (1) electrical connector E-084.
• 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 COOLANT TEMPERATURE SENSOR (FOR INSTRUMENT CLUSTER) REFERENCE VOLTAGE
• Turn ignition switch on.
• Check reference voltage between the coolant tem-
perature sensor (for instrument cluster) connector
E-084, terminal 1 and ground.
• Approximately 5 V should exist.
Is the reference voltage normal?
Ye s>>Go to step 5.
No
>>Go to the next step.
DIAGNOSIS & TESTING
LTSM030002
LTSMD150004
15–74Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.CHECK COOLANT TEMPERATURE SENSOR (FOR INSTRUMENT CLUSTER) REFERENCE VOLTAGE
• Turn ignition switch off.
• Disconnect the IC module connector.
• Check harness for a short to ground.
• Check the coolant temperature sensor circuit for voltage.
COOLANT
TEMPERATURE SENSOR (FOR INSTRUMENT
CLUSTER) TERMINAL GROUND
1
Ground
• Check the coolant temperature sensor circuit for resistance.
COOLANT
TEMPERATURE SENSOR (FORINSTRUMENT CLUSTER)
TERMINAL IC TERMINAL CONTINUITY
13
1Yes
• Check harness for a short to power.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace the coolant temperature sensor (for instrument cluster) supply circuit as necessary.
DIAGNOSIS & TESTING
15
15–75Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 5.CHECK COOLANT TEMPERATURE METER INDICATOR
• Turn ignition switch off.
• Connect the IC connector.
• Connect the coolant temperature sensor (for instrument cluster) electrical connector E-084.
• Turn ignition switch on.
• With the scan tool, view active DTCs and data stream in the IC.
Is DTC U040F still present?
Ye s>>Replace the coolant temperature sensor (for instrument cluster).
With the scan tool, view active DTCs and data stream in the IC.
If the DTC U040F is not present, the system is now normal.
If the DTC U040F is present, go to the next step.
No
>>The system is now operating properly.
Reassemble the vehicle and verify the customers complaint is repaired.
6.CHECK DTC
• With the X-431 scan tool, read IC DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC U040F still present?
Ye s>>Replace the IC.
No
>>The system is now operating properly.
Reassemble the vehicle and verify the customers complaint is repaired.
DIAGNOSIS & TESTING
15–76Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine U0303 - Fuel Sensor Open Circuit Or Shorted To Supply
U0303 - Fuel Sensor Short To Ground
DIAGNOSIS & TESTING
LTSMW150040T
15
15–79Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine On Board Diagnostic Logic
•Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
U0303 Fuel sensor open
circuit or shorted to supply
Turn ignition switchon The Instrument
Cluster (IC) detects the fuel sensor
shorted to ground condition. •
Fuel level sensor
• Harness or
connectors (The
sensor circuit is open
or short to power)
• Instrument cluster
U0303 Fuel sensor shorted
to ground The Instrument
Cluster (IC) detects the fuel sensorcircuit open or
shorted to voltage condition. •
Fuel level sensor
• Harness or
connectors (The
sensor circuit is
shorted to ground)
• Instrument cluster
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 and record and erase DTC.
• Start engine and warm it up to the normal operating temperature.
• Select view DTC and data stream.
• If the DTC is detected, the 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 15 Body & Accessories for more information).
NOTE :
Before performing any DTC diagnostic procedures, verify the IC power and ground circuits are properly connected.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
15–80Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Diagnostic Procedure
1.CHECK DTC
• Turn ignition switch on, with the scan tool, view and erase stored DTCs in the IC.
• Turn ignition switch off, and wait a few seconds, then turn ignition switch on.
• With the scan tool, view DTCs in the IC.
Is DTC U0303 present?
Ye s>>Go to the next step.
No
>>The conditions that caused this DTC to set are not present at this time (See Intermittent DTC Trouble-
shooting in Section 15 Body & Accessories for more information).
2.CHECK FUEL LEVEL SENSOR ELECTRICAL CONNECTOR
• Turn ignition switch off.
• Disconnect the fuel level sensor and fuel pump
assembly electrical connector (3).
• 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 FUEL LEVEL SENSOR REFERENCE VOLTAGE
• Turn ignition switch on.
• Check the fuel level sensor reference voltage
between the fuel level sensor connector B-032, ter-
minal 1 and ground.
• The voltage (less than 1 V) should exist.
Is there voltage present?
Ye s>>Go to step 5.
No
>>Go to the next step.
DIAGNOSIS & TESTING
LTSM040002
LTSMD150001
15
15–81Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.CHECK FUEL LEVEL SENSOR CIRCUIT FOR OPEN OR SHORT
• Turn ignition switch off.
• Disconnect the IC connector.
• Check harness for a short to ground.
FUEL LEVEL SENSOR
TERMINAL GROUND
1
Ground
• Check for continuity between the following terminals:
FUEL LEVEL
SENSOR
TERMINAL IC TERMINAL CONTINUITY
12
1Yes
• Continuity should exist.
• Check the harness for a short to power.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace the fuel level sensor supply circuit as necessary.
5.CHECK FUEL LEVEL SENSOR GROUND CIRCUIT
• Using a 12 V test light connected to battery (+), probe fuel level sensor ground circuit.
Does the test light illuminate brightly?
Ye s>>Go to the next step.
No
>>Repair or replace the fuel level sensor ground circuit for an open.
DIAGNOSIS & TESTING
15–82Chery Automobile Co., Ltd.