Diagnosis Procedure

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

1. CHECK OIL PRESSURE WARNING LAMP 

   Perform auto active test. Refer to Diagnosis Description .

   Is oil pressure warning lamp blinking?

   YES

   GO TO 2.

   NO

   GO TO 5.

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 terminal and ground.

      Terminals			Voltage (Approx.)
      (+)		(-)
      Oil pressure switch		Ground
      Connector	Terminal
      F37	1	Ground	12 V

   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 Component Inspection .

   Is the inspection result normal?

   YES

   Replace IPDM E/R. Refer to IPDM E/R : Removal & Installation .

   NO

   Replace oil pressure switch.

4. CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT 

   Check the oil pressure switch signal circuit. Refer to Diagnosis Procedure .

   Is the inspection result normal?

   YES

   GO TO 5.

   NO

   Repair harness or connector.

5. CHECK COMBINATION METER INPUT SIGNAL 

   Connect CONSULT and perform an input signal check for the combination meter. Refer to Component Function Check .

   Is the inspection result normal?

   YES

   Replace combination meter.

   NO

   Replace IPDM E/R. Refer to IPDM E/R : Removal & Installation .