P31EC

DTC Logic


DTC DETECTION LOGIC

NOTE:
This DTC may be detected where there is the mixing of air into coolant.






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

1.Turn power switch OFF and wait at least 60 seconds.
2.Set the vehicle to READY and wait at least 60 seconds.
3.Check DTC.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK DTC

Perform self-diagnosis of VCM.
Is DTC detected other than P31EC?
YES- Perform diagnosis procedure of detected DTC
NO- GO TO 2.

2. CHECK WATER PUMP 1 FEEDBACK DUTY

On the CONSULT screen, select "EV/HEV" - "DATA MONITOR" - "W/P 1 CRNT SPD DUTY".
Is value between 3% and 7%?
YES- GO TO 3.
NO- GO TO 4.

3. CHECK COOLANT

1.Turn power switch OFF.
2.Check that the coolant is free from air mixture.
Is the inspection result normal?
YES- GO TO 4.
NO- Perform the air bleeding. Refer to "Draining and Refilling" Coolant Draining And Refilling.

4. PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT
1.Turn power switch ON and erase DTC.
2.Perform DTC confirmation procedure again. Refer to "DTC Logic" .
Is DTC "P31EC" detected again?
YES- Replace VCM. Refer to "Removal and Installation" Removal And Installation.
NO- INSPECTION END