|
- Disconnect connector, and measure at the harness side.
- Ignition switch: ON
- Voltage between terminal engine-ECU OPSW line and body earth.
|
|
Q.
Is the check result normal?
|
|
- Check output line for open/short circuit.
|
|
Q.
Is the check result normal?
|
|
Repair or replace the connector, or repair the damaged harness wire.
|
|
|
|
Q.
Does the trouble symptom persist?
|
|
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
|
|
|
|
- Disconnect engine-ECU connector, and connect special tool power plant ECU check harness (MB992291) to measure at connector for inspection.
- Engine: Idling
- Voltage between terminal OPSW and body earth.
|
|
OK:
1 V or less (ignition switch: ON) System voltage (during idling)
|
|
Q.
Is the check result normal?
|
|
- Check output line for damage.
|
|
Q.
Is the check result normal?
|
|
Replace the engine oil pressure switch.
|
|
|
|
Repair or replace the connector, or repair the damaged harness wire.
|
|
|