P2123

DTC Logic


DTC DETECTION LOGIC

NOTE:
If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to "DTC Logic" P0643.






DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

- Turn power switch OFF and wait at least 20 seconds.
- Make sure that 12V battery voltage is 11 V or more.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT
1.Turn power switch ON and wait at least 1 second.
2.Check self-diagnostic result.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK APP SENSOR 1 POWER SUPPLY-I

1.Turn power switch OFF.
2.Disconnect accelerator pedal position (APP) sensor harness connector.
3.Turn power switch ON.
4.Check the voltage between APP sensor harness connector terminals.





Is the inspection result normal?
YES- GO TO 6.
NO- GO TO 2.

2. CHECK APP SENSOR 1 POWER SUPPLY-II

Check the voltage between APP sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- GO TO 3.

3. CHECK APP SENSOR POWER SUPPLY CIRCUIT

1.Turn power switch OFF.
2.Disconnect VCM harness connector.
3.Check the continuity between APP sensor harness connector and VCM harness connector.





4.Also check harness for short to ground and snort to power.
Is the inspection result normal?
YES- Check power supply circuit for SSOFF relay routing circuit. Refer to "Diagnosis Procedure" Ssoff Relay.
NO- Repair or replace error-detected parts.

4. CHECK APP SENSOR GROUND CIRCUIT

1.Turn power switch OFF.
2.Disconnect VCM harness connector.
3.Check the continuity between APP sensor harness connector and VCM harness connector.





4.Also check harness for snort to power.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace error-detected parts.

5. CHECK VCM GROUND CIRCUIT

Check the continuity between VCM harness connector and ground.





Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace error-detected parts.

6. CHECK APP SENSOR SIGNAL CIRCUIT

1.Turn power switch OFF.
2.Disconnect VCM harness connector.
3.Check the continuity between APP sensor harness connector and VCM harness connector.





4.Also check harness for short to ground and snort to power.
Is the inspection result normal?
YES- GO TO 7.
NO- Repair or replace error-detected parts.

7. CHECK APP SENSOR

Refer to "Component Inspection (Accelerator Pedal Position Sensor)" .
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Replace Accelerator pedal. Refer to "Removal and Installation"


Component Inspection (Accelerator Pedal Position Sensor)


1. CHECK ACCELERATOR PEDAL POSITION (APP) SENSOR

1.Turn power switch OFF.
2.Reconnect all harness connectors disconnected.
3.Turn power switch ON.
4.Check the voltage VCM harness connector terminals under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace accelerator pedal. Refer to "Removal and Installation"