Chery Tiggo 2009 Service Manual page 386

Check reference values between ECM terminals and ground under the following conditions:
ECM TERMINAL
NO.
32
38
54
64
65
66
67
78
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO.
P0122
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.
102
03–
DIAGNOSIS & TESTING
ITEM
Regulated sensor
supply
Electronic throttle
control actuator
(Position sensor)
Ignition switch: ON
Electronic throttle
control actuator
Motor 4
Motor 3
Motor 2
Motor 1
Sensor (GND)
DTC DETECTION
DTC DEFINITION
• Ignition switch:
Throttle Position
Sensor (TPS) A ON
• Engine: Running
circuit low input
CONDITION
• Engine stopped
• Accelerator pedal:
Fully released
• Engine stopped
• Accelerator pedal:
Fully depressed
• Engine stopped
• Accelerator pedal:
Fully released
• Engine stopped
• Accelerator pedal:
Fully depressed
CONDITION CONDITION
Signal output is
below minimum
acceptable range for
a few seconds
continuously.
DATA (DC
VOLTAGE)
- Approximately 5 V
12 V or 0 V
-
12 V or 0 V
Approximately 0 V
DTC SET
POSSIBLE CAUSE
• Throttle Position
Sensor (TPS) or
misalignment
• Harness or
connectors (Signal
circuit is open or
shorted)
• ECM
Chery Automobile Co., Ltd.
4.24 V
0.72 V
0.74 V
4.62 V