P31EB

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

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 P31EB?
YES- Perform diagnosis procedure of detected DTC.
NO- GO TO 2.

2. CHECK WATER PUMP 2 FEEDBACK DUTY

With CONSULT
On the CONSULT screen, select "EV/HEV" - "DATA MONITOR" - "W/P 2 CRNT SPD DUTY".
Is value between 83% and 91%?
YES- GO TO 3.
NO- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.

3. CHECK FUSE

1.Turn power switch OFF.
2.Pull out #72 fuse.
3.Make sure that the fuse is not fusing.
Is the inspection result normal?
YES- GO TO 4.
NO- Replace the fuse after repairing the applicable circuit.

4. CHECK WATER PUMP 2 INPUT POWER VOLTAGE

1.Insert the fuse which pulled out.
2.Disconnect water pump 2 harness connector.
3.Turn power switch ON.
4.Check the voltage between water pump 2 harness connector and ground.





Is the inspection result normal?
YES- Replace electric water pump 2. Refer to "Removal and Installation" Removal And Installation.
NO- GO TO 5.

5. CHECK WATER PUMP 2 INPUT POWER CIRCUIT-I

1.Turn power switch OFF.
2.Pull out #72 fuse.
3.Check the continuity between electric water pump 2 harness connector and fuse terminal.





4.Also check harness for short to ground.
Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace error-detected parts.

6. CHECK WATER PUMP 2 INPUT POWER CIRCUIT-II

1.Remove M/C relay.
2.Check the continuity between M/C relay harness connector and fuse terminal.





3.Also check harness for short to ground.
Is the inspection result normal?
YES- Perform trouble diagnosis for M/C relay routing circuit. Refer to "Diagnosis Procedure" M/C Relay.
NO- Repair or replace error-detected parts.