Oil Pressure Switch Signal Circuit

OIL PRESSURE SWITCH SIGNAL CIRCUIT

Description

Detects the engine oil pressure and transmits the oil pressure switch signal to the IPDM E/R.


Component Function Check


1. COMBINATION METER INPUT SIGNAL

1.Select "METER/M&A" on CONSULT.
2.Monitor "OIL W/L" of "DATA MONITOR" while operating ignition switch.
OIL W/L
When ignition switch is in ON position (Engine stopped) : ON
When engine is running: OFF

- Inspection End.


Diagnosis Procedure

Regarding Wiring Diagram information, [1][2]Electrical Diagrams.

1. CHECK OIL PRESSURE SWITCH CIRCUIT






1.Turn ignition switch OFF.
2.Disconnect IPDM E/R connector E122 and oil pressure switch connector E208 (VQ-40DE) or F4 (QR-25DE).
3.Check continuity between IPDM E/R harness connector E122
(A) terminal 42 and oil pressure switch harness connector E208
(VQ-40DE) or F4 (QR-25DE) (B) terminal 1.
Continuity should exist.
Is the inspection result normal?
YES- Inspection End.
NO- Repair harness or connector.


Component Inspection


1. CHECK OIL PRESSURE SWITCH






Check continuity between oil pressure switch and ground.





Is the inspection result normal?
YES- Inspection End.
NO- Replace the oil pressure switch.