Diagnosis Procedure

CHECK OIL PRESSURE WARNING LAMP
Perform auto active test of IPDM E/R. Refer to "DIAGNOSIS DESCRIPTION ".

Is oil pressure warning lamp illuminated?

YES: GO TO 2.

NO: GO TO 5.

CHECK IPDM E/R OUTPUT VOLTAGE

Disconnect the oil pressure switch connector.
Turn ignition switch ON.
Check voltage between the oil pressure switch harness connector terminal and ground.

TERMINAL VOLTAGE CHART

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

Is the inspection result normal?

YES: GO TO 3.

NO: GO TO 4.

CHECK OIL PRESSURE SWITCH
Check the oil pressure switch. Refer to "COMPONENT INSPECTION ".

Is the inspection result normal?

YES: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION ".

NO: Replace oil pressure switch.
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.
CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Connect the CONSULT-III.
2. Select the "Data Monitor" of the "METER/M&A" and check the "OIL W/L" monitor value. Refer to "COMPONENT FUNCTION CHECK ".
  Is the inspection result normal?
  
  YES: Replace combination meter.
  
  NO: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".