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ENGINE OIL CONTROL VALVE CHECK
 
 
Required Special Tools:
  • MB991658: Test Harness
 
 
<Checking the Operation Sound>
1. Disconnect the engine oil control valve connector.
2.
cautionTo prevent the coil from burning, keep the duration of the voltage application as short as possible.
Check that the operation sound of the engine oil control valve can be heard when the positive 12V starter battery voltage is supplied to the engine oil control valve. (Use the special tool MB991658 to connect terminal No. 2 of the engine oil control valve connector to the positive 12V starter battery terminal and terminal No. 1 to the negative 12V starter battery terminal.)
3. If the operation sound cannot be heard, replace the engine oil control valve.
 
 
 
<Checking the Coil Resistance>
1. Disconnect the engine oil control valve connector.
2. Measure resistance between terminal No. 1 and terminal No. 2 of the connector at the engine oil control valve side.
Standard value: 6.9 - 7.9 Ω [at 20°C (68°F)]
3. If resistance is not within the standard value, replace the engine oil control valve.