Chery Tiggo. Manual — part 175
P2138 - Pedal Position Sensor Performance
DIAGNOSIS & TESTING
LTSMW030026T
03
DIAGNOSIS & TESTING
LTSMW030025T
Check reference values between ECM terminals 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
33
Regulated sensor
supply 1
-
Approximately 5 V
16
Accelerator pedal
position sensor
• Engine stopped
• Accelerator pedal:
Fully released
0.72 - 0.74 V
• Engine stopped
• Accelerator pedal:
Fully depressed
3.95 V
40
Accelerator pedal
position sensor
• Engine stopped
• Accelerator pedal:
Fully released
0.36 - 0.37 V
• Engine stopped
• Accelerator pedal:
Fully depressed
1.97 V
35
Sensor (GND)
-
Approximately 0 V
36
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
P2138
Accelerator pedal
position sensor
performance
• Ignition switch:
ON
• Engine: Running
Rationally incorrect
voltage is sent to
ECM compared with
the signals from
Accelerator Pedal
Position (APP)
sensor 1 and APP
sensor 2.
• Accelerator pedal
position sensor 1
and 2
• Harness or
connectors
• Electronic throttle
control actuator
(TPS1 and TPS2)
• 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 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
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?
Yes
>>
Go to the next step.
No
>>
Repair or replace ground harness or connections.
2.
CHECK THE ACCELERATOR PEDAL POSITION (APP) SENSOR ELECTRICAL CONNECTOR
• Disconnect the APP sensor electrical connector (1).
• Inspect the electrical connector for damage.
Is the electrical connector OK?
Yes
>>
Go to the next step.
No
>>
Repair or replace the electrical connector
as necessary.
3.
CHECK THE ACCELERATOR PEDAL POSITION (APP) SENSOR 1 POWER SUPPLY CIRCUIT
• Turn ignition switch on.
• Check APP sensor 1 supply voltage between sen-
sor terminal 6 and ground in the sensor electrical
connector C-009.
• Approximately 5 V should exist.
Is the check result normal?
Yes
>>
Go to step 5.
No
>>
Go to the next step.
DIAGNOSIS & TESTING
VISMD030008
LTSMD030053
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