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Engine Oil Level Warning Sensor Circuit

WARNING: This page is about a different car, the 2003 Lexus GS 430, 2003 Lexus GS 300, 2002 Lexus GS 430, and 2002 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the switch connector and inspect the connector on the wire harness side. See CONNECTOR IDENTIFICATION . See INSPECTING ENGINE OIL LEVEL WARNING SENSOR CIRCUIT  table. If continuity is not as specified, inspect the wire harness or ground point.

INSPECTING ENGINE OIL LEVEL WARNING SENSOR CIRCUIT

Tester Connection Condition Specified Condition
2 - Ground (1) Constant Continuity
(1) Terminal No. 2 wire color is White/Black for GS 430 and Brown for GS 300.