Main Power Supply and Ground Circuit (Sub Electric Oil Pump Inverter)

MAIN POWER SUPPLY AND GROUND CIRCUIT (SUB ELECTRIC OIL PUMP INVERTER)

Diagnosis Procedure


1. CHECK POWER SUPPLY CIRCUIT

Check the voltage between sub electric oil pump inverter vehicle side harness connector terminal and ground.





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

2. CHECK HARNESS BETWEEN SUB ELECTRIC OIL PUMP INVERTER AND IPDM E/R

1.Turn ignition switch OFF and wait for 10 minutes or more.
2.Disconnect the sub electric oil pump inverter connector.
3.Disconnect the IPDM E/R connector.
4.Check the continuity between sub electric oil pump inverter vehicle side harness connector terminal and
IPDM E/R vehicle side harness connector terminal.





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





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace damaged parts.

3. DETECT MALFUNCTIONING ITEM

Check the following.
- Harness for short or open between ignition switch and IPDM E/R
- Ignition switch
- 10A fuse (#42, IPDM E/R)
- IPDM E/R
Is the inspection result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- Repair or replace damaged parts.

4. CHECK GROUND CIRCUIT

1.Turn ignition switch OFF and wait for 10 minutes or more.
2.Disconnect the sub electric oil pump inverter connector.
3.Check the continuity between sub electric oil pump inverter vehicle side harness connector terminal and ground.





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