Oil Pressure System: Inspection

DIAGNOSIS CHART

Step	Check	Yes	No
1 CHECK COMBINATION METER . Turn the ignition switch to ON. (engine OFF) Check other warning lights.	Does the warning light illuminate?	Go to step 2 .	Repair or replace the combination meter. Refer to INSPECTION , Combination Meter System.
2 CHECK THE HARNESS CONNECTOR BETWEEN THE COMBINATION METER AND THE OIL PRESSURE SWITCH . Turn the ignition switch to OFF. Disconnect the connector from oil pressure switch. Turn the ignition switch to ON. Measure the voltage of harness between oil pressure switch connector and chassis ground. Connector & terminal (E11) No. 1 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Replace the oil pressure switch. Refer to OIL PRESSURE SWITCH .	Go to step 3.
3 CHECK COMBINATION METER . Turn the ignition switch to OFF. Remove the combination meter. Measure the resistance of combination meter. Terminals (i10) No. 2 - No. 19:	Is the resistance less than 10 Ω?	Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit of harness between combination meter and oil pressure switch Poor contact in combination meter connector Poor contact in oil pressure switch connector Poor contact in coupling connector	Repair or replace the combination meter. Refer to INSPECTION , Combination Meter System.