P312E

DTC Logic


DTC DETECTION LOGIC

NOTE:
If DTC P312E is displayed with DTC P0A08, P317A, P3191, P31A7, or P319C, perform diagnosis for DTC
P0A08, P317A, P3191, P31A7, or P319C.






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.Set the vehicle to READY.
2.Operate the automatic air conditioning system (A/C switch ON).
3.Turn power switch OFF as automatic air conditioning system ON condition
4.Wait at least 30 seconds.
5.Turn power switch ON.
6.Check DTC.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. PERFORM SELF-DIAGNOSIS OF A/C AUTO AMP.

With CONSULT
Perform self-diagnosis of A/C auto amp.
Is DTC detected?
YES- Check the DTC.
NO- GO TO 2

2. PERFORM SELF-DIAGNOSIS OF TRACTION MOTOR INVERTER

With CONSULT
Perform self-diagnosis of traction motor inverter.
Is DTC detected?
YES- Check the DTC.
NO- GO TO 3.

3. PERFORM SELF-DIAGNOSIS OF LBC

With CONSULT
Perform self-diagnosis of LBC.
Is DTC detected?
YES- Check the DTC.
NO- GO TO 4.

4. PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT
1.Erase DTC.
2.Perform DTC confirmation procedure again. Refer to "DTC Logic" .
Is DTC "P312E" detected again?
YES- Replace VCM. Refer to "Removal and Installation" Removal And Installation.
NO- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.