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Oil Pressure System: Inspection

INSPECTION

No. Step Check Yes No
1 CHECK COMBINATION METER. 
  1. Turn ignition switch to ON. (engine OFF)
  2. Check other warning lights.
 Do the warning lights go on? Go to step 2.  Repair or replace the combination meter. < Ref. to SYMPTOM CHART , Combination Meter System. >
2 CHECK HARNESS CONNECTOR BETWEEN COMBINATION METER AND OIL PRESSURE SWITCH. 
  1. Turn ignition switch to OFF.
  2. Disconnect connector from the oil pressure switch.
  3. Turn ignition switch ON.
  4. Measure the voltage of harness between the combination meter connector and chassis ground.

Connector & terminal 
(E11) No. 1 - Chassis ground: 		 Is the voltage more than 10 V? Replace oil pressure switch. Go to step 3. 
3 CHECK COMBINATION METER. 
  1. Turn ignition switch to OFF.
  2. Remove the combination meter.
  3. Measure the resistance of the combination meter.

Terminal 
No. 13 - No. 3: 		 Is the resistance less than 10 ohm Replace the harness connector between combination meter and oil pressure switch. Repair or replace the combination meter and the oil pressure switch warning light blub.
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