P0643

DTC Logic


DTC DETECTION LOGIC







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.
2.Check self-diagnostic result.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK SENSOR POWER SUPPLY VOLTAGE

1.Turn power switch OFF.
2.Disconnect battery current sensor harness connector.
3.Turn power switch ON.
4.Check the voltage between battery current sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- GO TO 2.

2. CHECK VCM POWER SUPPLY AND GROUND

Perform trouble diagnosis for VCM power supply and ground. Refer to "VCM : Diagnosis Procedure" VCM.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace error-detected parts.

3. CHECK SENSOR POWER SUPPLY ROUTING CIRCUIT

1.Turn power switch OFF.
2.Disconnect following sensor harness connector and check harness for short to ground and short to power.





Is the inspection result normal?
YES- Check sensors for short to ground and short to power.
NO- Repair or replace error-detected parts.

4. CHECK INTERMITTENT INCIDENT

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