THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFF

Description

The oil pressure warning lamp remains illuminated while the engine is running (normal oil pressure).

THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFF

Diagnosis Procedure

1.CHECK OIL PRESSURE WARNING LAMP
Perform IPDM E/R auto active test. Refer to See: Power and Ground Distribution\Power Distribution Module\Testing and Inspection\Scan Tool Testing and Procedures\Diagnosis System (IPDM E/R)\Diagnosis Description.
Is oil pressure warning lamp illuminated?
YES >> GO TO 2
NO >> Replace combination meter. Refer to See: Instrument Cluster / Carrier\Service and Repair\Removal and Replacement.
2.CHECK IPDM E/R OUTPUT VOLTAGE

1. Turn ignition switch OFF.
2. Disconnect the oil pressure switch connector.
3. Turn ignition switch ON.
4. Check voltage between the oil pressure switch harness connector F41 terminal 1 and ground.

1 - Ground : Approx. 12V

Is the Inspection result normal?
YES >> GO TO 3
NO >> GO TO 4
3.CHECK OIL PRESSURE SWITCH
Perform a unit check for the oil pressure switch. Refer to See: Component Tests and General Diagnostics\Oil Pressure Switch Signal Circuit\Component Inspection.
Is the Inspection result normal?
YES >> Replace IPDM E/R. Refer to See: Power and Ground Distribution\Power Distribution Module\Service and Repair.
NO >> Replace oil pressure switch.
4.CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT
Check the oil pressure switch signal circuit. Refer to See: Component Tests and General Diagnostics\Oil Pressure Switch Signal Circuit\Diagnosis Procedure.
Is the Inspection result normal?
YES >> Replace IPDM E/R. Refer to See: Power and Ground Distribution\Power Distribution Module\Service and Repair.
NO >> Repair harness or connector.