P0603

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 and wait at least 10 seconds.
2.Turn power switch OFF and wait at least 20 seconds.
3.Turn power switch ON and wait at least 10 seconds.
4.Repeat steps 2 and 3 for 2 times.
5.Check self-diagnostic result.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. INTERVIEW THE CUSTOMER

Interview the customer to see if there is a removal history of 12V battery terminals immediately after turning
OFF the power switch.
NOTE:
DTC "P0603" may be detected when 12 V battery terminals are removed before VCM is shut off.
Is there a removal history of 12V battery terminals immediately after turning OFF the power switch?
YES- GO TO 4.
NO- GO TO 2.

2. CHECK 12V BATTERY POWER SUPPLY

1.Turn power switch OFF.
2.Disconnect VCM harness connector.
3.Check the voltage between VCM harness connector and ground.





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

3. CHECK 12V BATTERY POWER SUPPLY CIRCUIT

1.Pull out #43 fuse.
2.Check the continuity between VCM harness connector and fuse terminal.





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

4. PERFORM CONFIRMATION PROCEDURE AGAIN

With CONSULT
1.Reconnect all harness connectors disconnected.
2.Turn power switch ON.
3.Erase DTC.
4.Perform DTC confirmation procedure again. Refer to "DTC Logic" .
Is the DTC detected again?
YES- Replace VCM. Refer to "Removal and Installation" Removal And Installation.
NO- INSPECTION END