Diagnostic Test
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 SUB ELECTRIC OIL PUMP INPUT SIGNAL
- Turn ignition switch OFF and wait for 10 minutes or more.
- Disconnect the negative terminal from 12V battery.
- Disconnect sub electric oil pump connector.
- Check continuity between sub electric oil pump harness connector terminals.
Sub electric oil pump Continuity Connector Terminal C22 1 - 2 Not existed 1 - 3 2 - 3 - Check continuity between sub electric oil pump harness connector terminals and ground.
Sub electric oil pump - Continuity Connector Terminal C22 1 Ground Not existed 2 3
Is the inspection result normal?
YES
GO TO STEP 4.
NO
GO TO STEP 2.
- CHECK SUB ELECTRIC OIL PUMP INVERTER
- Remove sub electric oil pump inverter. Refer to REMOVAL AND INSTALLATION .
- Check continuity between sub electric oil pump inverter connector terminals.
Sub electric oil pump inverter Continuity + - Terminal 6 7 Not existed 9 10 Sub electric oil pump inverter Continuity + - Terminal 7 5 Not existed 9 10
Is the inspection result normal?
YES
GO TO STEP 3.
NO
Replace sub electric oil pump inverter. Refer to REMOVAL AND INSTALLATION .
- CHECK HARNESS BETWEEN SUB ELECTRIC OIL PUMP INVERTER AND SUB ELECTRIC OIL PUMP
- Check continuity between sub electric oil pump inverter harness connector terminals and sub electric oil pump harness connector terminals.
Sub electric oil pump inverter Sub electric oil pump Continuity Connector Terminal Connector Terminal H3 9 C22 1 Not existed 2 H4 7 1 3 10 2 3 - Check continuity between sub electric oil pump inverter harness connector terminals and ground.
Sub electric oil pump inverter - Continuity Connector Terminal H3 9 Ground Not existed H4 7 10
Is the inspection result normal?
YES
Check intermittent incident. Refer to INTERMITTENT INCIDENT .
NO
Repair or replace damaged parts.
- Check continuity between sub electric oil pump inverter harness connector terminals and sub electric oil pump harness connector terminals.
- CHECK SUB ELECTRIC OIL PUMP INSULATION RESISTANCE
Use an insulation resistance tester to measure insulation resistance.
Sub electric oil pump - Resistance
(Approx.)Terminal 1 Housing case 1 MΩ or more 2 3 Is the inspection result normal?
YES
Check intermittent incident. Refer to INTERMITTENT INCIDENT .
NO
Replace transmission assembly due to malfunction in sub electric oil pump. Refer to REMOVAL AND INSTALLATION .