Diagnosis Procedure
WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK POWER SUPPLY CIRCUIT
Check voltage between sub electric oil pump inverter harness connector terminal and ground.
+ - Condition Voltage
(Approx.)Sub electric oil pump inverter Connector Terminal T1 2 Ground Turn ignition switch ON 9 - 16 V Turn ignition switch OFF 0 V Is the inspection result normal?
YES
GO TO STEP 4.
NO
GO TO STEP 2.
- CHECK HARNESS BETWEEN SUB ELECTRIC OIL PUMP INVERTER AND IPDM E/R
- Turn ignition switch OFF and wait for 10 minutes or more.
- Disconnect the sub electric oil pump inverter connector.
- Disconnect the IPDM E/R connector.
- Check continuity between sub electric oil pump inverter harness connector terminal and IPDM E/R harness connector terminal.
Sub electric oil pump inverter IPDM E/R Continuity Connector Terminal Connector Terminal T1 2 E124 64 Existed - Also check short circuit in harness.
Is the inspection result normal?
YES
GO TO STEP 3.
NO
Repair or replace damaged parts.
- DETECT MALFUNCTIONING ITEM
Check the following items:
- Open circuit or short circuit in harness between ignition switch and IPDM E/R. Refer to WIRING DIAGRAM - IGNITION POWER SUPPLY - .
- 10A fuse (No. 53, IPDM E/R). Refer to FUSE, CONNECTOR AND TERMINAL ARRANGEMENT .
- IPDM E/R
Is the inspection result normal?
YES
Check intermittent incident. Refer to INTERMITTENT INCIDENT .
NO
Repair or replace damaged parts.
- CHECK GROUND CIRCUIT
- Turn ignition switch OFF and wait for 10 minutes or more.
- Disconnect the sub electric oil pump inverter connector.
- Check continuity between sub electric oil pump inverter harness connector terminal and ground.
Sub electric oil pump inverter - Continuity Connector Terminal T2 5 Ground Existed
Is the inspection result normal?
YES
Check intermittent incident. Refer to INTERMITTENT INCIDENT .
NO
Repair or replace damaged parts.