Performance - Chery A1 2009 Service Manual

Check reference values between ECM terminals and ground under the following conditions:
ECM TERMINAL
NO.
32
38
54
64
65
66
67
73
78
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO.
P0221
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 the engine and warm it to normal operating temperature.
• With the scan tool, select view DTCs in the ECM.
• If the DTC is detected, the condition is current. Go to Diagnostic Procedure - Step 1.
Chery Automobile Co., Ltd.
DIAGNOSIS & TESTING
ITEM
Regulated sensor
supply 2
Electronic throttle
control actuator
(position sensor)
Electronic throttle
control actuator
Ignition switch: ON
Electronic throttle
control actuator
Electronic throttle
control actuator
Electronic throttle
control actuator
Electronic throttle
control actuator
Regulated sensor
supply 3
Sensor (GND)
DTC DETECTION
DTC DEFINITION
Throttle Position
Ignition switch on or
Sensor (TPS) B
after engine start

performance

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
DTC SET
CONDITION CONDITION
Rationally incorrect
voltage is sent to
ECM compared with
the signals from
TPS1 and TPS2.
DATA
(DC VOLTAGE)
- Approximately 5 V
4.24 V
0.72 V
0.74 V
4.62 V
0 V or 12 V
-
12 V or 0 V
Approximately 5 V
Approximately 0 V
POSSIBLE CAUSE
• Electronic throttle
control actuator
(TPS1 and TPS2)
• Harness or
connectors
• Accelerator pedal
position sensor 2
• ECM
03–
03
113