Oil Pressure System: Inspection

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK COMBINATION METER. Turn the ignition switch to ON. (engine OFF) Check the warning light in the combination meter.	Does the warning light illuminate?	Go to step 2 .	Repair or replace the combination meter. <Ref. to INSPECTION , Combination Meter System.>
2 CHECK POWER SUPPLY TO OIL PRESSURE SWITCH. Turn the ignition switch to OFF. Disconnect the terminal from oil pressure switch. Turn the ignition switch to ON. Measure the voltage of harness between oil pressure switch harness terminal and chassis ground. Terminals (E11) No. 1 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Replace the oil pressure switch. <Ref. to OIL PRESSURE SWITCH .>	Go to step 3 .
3 CHECK COMBINATION METER. Perform the self-diagnosis of combination meter to check if there are any faults in the combination meter. <Ref. to OPERATION , Combination Meter System.>	Is combination meter OK?	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 of combination meter connector Poor contact of oil pressure switch terminal Poor contact of coupling connector	Repair or replace the combination meter. <Ref. to INSPECTION , Combination Meter System.>