Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMITSUBISHI2009LANCER L4-2.4L (4B12)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSVARIABLE VALVE TIMING ACTUATORTESTING AND INSPECTION
2009 Mitsubishi Lancer L4-2.4L (4B12)
Variable Valve Timing Actuator: Testing and Inspection
2009 Mitsubishi Lancer L4-2.4L (4B12)SECTION Testing and Inspection
ENGINE OIL CONTROL VALVE CHECK
Required Special Tools:
- MB991658: Test Harness
Intake engine oil control valve
[Checking the Operation Sound]
1. Disconnect the intake engine oil control valve connector.
CAUTION: To prevent the coil from burning, keep the duration of the voltage application as short as possible.
2. Check that the operation sound of the intake engine oil control valve can be heard when the positive battery voltage is supplied to the intake engine oil control valve. (Use the special tool MB991658 to connect terminal No. 2 of the intake engine oil control valve connector to the positive battery terminal and terminal No. 1 to the negative battery terminal.)
3. If the operation sound cannot be heard, replace the intake engine oil control valve.
[Checking the Coil Resistance]
1. Disconnect the intake engine oil control valve connector.
2. Measure resistance between terminal No. 1 and terminal No. 2 of the connector at the intake engine oil control valve side.
Standard value: 6.9 - 7.9 Ohms[at 20 °C (68 °F)]
3. If resistance is not within the standard value, replace the intake engine oil control valve.
Exhaust engine oil control valve
[Checking the Operation Sound]
1. Disconnect the exhaust engine oil control valve connector.
CAUTION: To prevent the coil from burning, keep the duration of the voltage application as short as possible.
2. Check that the operation sound of the exhaust engine oil control valve can be heard when the positive battery voltage is supplied to the exhaust engine oil control valve. (Use the special tool MB991658 to connect terminal No. 2 of the exhaust engine oil control valve connector to the positive battery terminal and terminal No. 1 to the negative battery terminal.)
3. If the operation sound cannot be heard, replace the exhaust engine oil control valve.
[Checking the Coil Resistance]
1. Disconnect the exhaust engine oil control valve connector.
2. Measure resistance between terminal No. 1 and terminal No. 2 of the connector at the exhaust engine oil control valve side.
Standard value: 6.9 - 7.9 Ohms[at 20 °C (68 °F)]
3. If resistance is not within the standard value, replace the exhaust engine oil control valve.
Required Special Tools:
- MB991658: Test Harness
Intake engine oil control valve
[Checking the Operation Sound]
1. Disconnect the intake engine oil control valve connector.
CAUTION: To prevent the coil from burning, keep the duration of the voltage application as short as possible.
2. Check that the operation sound of the intake engine oil control valve can be heard when the positive battery voltage is supplied to the intake engine oil control valve. (Use the special tool MB991658 to connect terminal No. 2 of the intake engine oil control valve connector to the positive battery terminal and terminal No. 1 to the negative battery terminal.)
3. If the operation sound cannot be heard, replace the intake engine oil control valve.
[Checking the Coil Resistance]
1. Disconnect the intake engine oil control valve connector.
2. Measure resistance between terminal No. 1 and terminal No. 2 of the connector at the intake engine oil control valve side.
Standard value: 6.9 - 7.9 Ohms[at 20 °C (68 °F)]
3. If resistance is not within the standard value, replace the intake engine oil control valve.
Exhaust engine oil control valve
[Checking the Operation Sound]
1. Disconnect the exhaust engine oil control valve connector.
CAUTION: To prevent the coil from burning, keep the duration of the voltage application as short as possible.
2. Check that the operation sound of the exhaust engine oil control valve can be heard when the positive battery voltage is supplied to the exhaust engine oil control valve. (Use the special tool MB991658 to connect terminal No. 2 of the exhaust engine oil control valve connector to the positive battery terminal and terminal No. 1 to the negative battery terminal.)
3. If the operation sound cannot be heard, replace the exhaust engine oil control valve.
[Checking the Coil Resistance]
1. Disconnect the exhaust engine oil control valve connector.
2. Measure resistance between terminal No. 1 and terminal No. 2 of the connector at the exhaust engine oil control valve side.
Standard value: 6.9 - 7.9 Ohms[at 20 °C (68 °F)]
3. If resistance is not within the standard value, replace the exhaust engine oil control valve.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.