Removal & Installation
If the vehicle is equipped with air suspension, the electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in the luggage compartment. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations. Failure to follow these instructions may result in personal injury.
- Before servicing the vehicle, refer to the Precautions section.
- Disconnect battery negative cable from battery and properly isolate to prevent accidental reconnection.
- Raise and support the vehicle with the transmission in NEUTRAL.
Remove the oil pressure sensor electrical connector and remove the oil pressure sensor.
- Install the sensor and tighten to 10 ft. lbs. (14 Nm), then tighten an additional 180 degrees.
- Connect the electrical connector.
- Lower the vehicle and reconnect the battery.
The pressure switch used with the oil pressure warning light is not interchangeable with the sending unit used with the oil pressure gauge. If the incorrect part is installed the oil pressure indicating system will be inoperative and the sending unit or gauge will be damaged.
- Disconnect the negative battery cable.
- Disconnect the electrical connector and remove the oil pressure sender/switch.
- Apply pipe sealant to the threads of the new sender/switch.
- Install the oil pressure sender/switch and tighten to 9-11 ft. lbs. (12-16 Nm).
- Connect the electrical connector to the sender/switch and connect the negative battery cable.
- Run the engine and check for leaks and proper operation.
- Test and verify the engine oil pressure. See Section 3 for more information. If no or insufficient pressure exists, oil pressure problem exists and gauge and sensor are operational, repair oil pressure problem.
- Check the appropriate fuse before attempting any other diagnostics.
- Unplug the sensor electrical harness.
- Using an ohmmeter, check continuity between the sensor terminals.
- With the engine stopped, continuity should not exist.
The switch inside the oil pressure sensor opens at 6 psi or less of pressure.
- With the engine running, continuity should exist.
- If continuity does not exist as stated, the sensor is faulty.