P1884

P1884 SUB ELECTRIC OIL PUMP

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If "DTC CONFIRMATION PROCEDURE" is previously conducted, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.
- GO TO 2.

2. CHECK DTC DETECTION

With CONSULT
1.Set the vehicle to READY.
2.Set the vehicle to idling stop state and wait for 2 seconds or more.
3.Check DTC.
Is "P1884" detected?
YES- Go to .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK SUB ELECTRIC OIL PUMP INPUT SIGNAL

1.Turn ignition switch OFF and wait for 10 minutes or more.
2.Disconnect the negative terminal from 12V battery.
3.Disconnect the sub electric oil pump connector.
4.Check the continuity between sub electric oil pump vehicle side harness connector terminals.





5.Check the continuity between sub electric oil pump vehicle side harness connector terminals and ground.





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

2. CHECK SUB ELECTRIC OIL PUMP INVERTER

1.Remove the sub electric oil pump inverter. Service and Repair.
2.Check the continuity between sub electric oil pump inverter connector terminals.





Is the inspection result normal?
YES- GO TO 3.
NO- Replace the sub electric oil pump inverter. Service and Repair.

3. CHECK HARNESS BETWEEN SUB ELECTRIC OIL PUMP INVERTER AND SUB ELECTRIC OIL PUMP

1.Check the continuity between sub electric oil pump inverter vehicle side harness connector terminals and sub electric oil pump vehicle side harness connector terminals.





2.Check the continuity between sub electric oil pump inverter vehicle side harness connector terminals and ground.





Is the inspection result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- Repair or replace damaged parts.

4. CHECK SUB ELECTRIC OIL PUMP INSULATION RESISTANCE

Use an insulation resistance tester to measure insulation resistance.





Is the inspection result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- Replace the A/T assembly due to malfunction in the sub electric oil pump. Removal and Installation.