Chery Tiggo 2009 Service Manual page 1664

On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO.
U0303
U0303
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.
80
15–
DIAGNOSIS & TESTING
DTC DETECTION
DTC DEFINITION
Fuel sensor open
circuit or shorted to
supply
Turn ignition switch
Fuel sensor shorted
to ground
CONDITION CONDITION
The Instrument
Cluster (IC) detects
the fuel sensor
shorted to ground
on
The Instrument
Cluster (IC) detects
the fuel sensor
circuit open or
shorted to voltage
DTC SET
POSSIBLE CAUSE
• Fuel level sensor
• Harness or
connectors (The
sensor circuit is open
or short to power)
condition.
• Instrument cluster
• Fuel level sensor
• Harness or
connectors (The
sensor circuit is
shorted to ground)
• Instrument cluster
condition.
Chery Automobile Co., Ltd.