PR25DD engine
- CHECK DTC PRIORITY
If DTC P2138 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Is applicable DTC detected?
YES
Perform diagnosis of applicable. Refer to DTC Index .
NO
GO TO 2.
- CHECK APP SENSOR 1 POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect accelerator pedal position (APP) sensor harness connector.
- Turn ignition switch ON.
- Check the voltage between APP sensor harness connector and ground.
+
-
Voltage
(Approx.)
APP sensor
Connector
Terminal
E40
3
Ground
5 V
Is the inspection result normal?
YES
GO TO 4.
NO
GO TO 3.
- CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between APP sensor harness connector and ECM harness connector.
+
-
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E40
3
E31
156
Existed
- Also check harness for short to ground.
Is the inspection result normal?
YES
Perform the trouble diagnosis for power supply circuit.
NO
Repair or replace error-detected parts.
- CHECK APP SENSOR 2 POWER SUPPLY
Check the voltage between APP sensor harness connector and ground.
+
-
Voltage
(Approx.)
APP sensor
Connector
Terminal
E40
2
Ground
5 V
Is the inspection result normal?
YES
GO TO 6.
NO
GO TO 5.
- CHECK SENSOR POWER SUPPLY 2 CIRCUIT
Refer to Diagnosis Procedure .
Is inspection result normal?
YES
Perform the trouble diagnosis for power supply circuit.
NO
Repair or replace error-detected parts.
- CHECK APP SENSOR GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between APP sensor harness connector and ECM harness connector.
+
-
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E40
6
E31
154
Existed
5
161
- Also check harness for short to power.
Is the inspection result normal?
YES
GO TO 7.
NO
Repair or replace error-detected parts.
- CHECK APP SENSOR INPUT SIGNAL CIRCUIT
- Check the continuity between APP sensor harness connector and ECM harness connector.
+
-
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E40
4
E31
160
Existed
1
153
- Also check harness for short to ground and to power.
Is the inspection result normal?
YES
GO TO 8.
NO
Repair or replace error-detected parts
- Check the continuity between APP sensor harness connector and ECM harness connector.
- CHECK APP SENSOR
Check the APP sensor. Refer to Component Inspection .
Is the inspection result normal?
YES
Check intermittent incident. Refer to Inspection .
NO
Replace accelerator pedal assembly. Refer to Removal & Installation .