Diesel Data: Automotive Repair

Engine Hood Courtesy Switch Circuit








THEFT DETERRENT SYSTEM: Engine Hood Courtesy Switch Circuit

Engine Hood Courtesy Switch Circuit

DESCRIPTION

The engine hood switch is installed together with the hood lock. This switch turns ON when the engine hood is opened and turns OFF when the engine hood is closed.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT ENGINE HOOD COURTESY SWITCH





(a) Remove the courtesy switch from the hood lock.
(b) Measure the resistance of the switch.
Standard resistance:





NG -- REPLACE ENGINE HOOD COURTESY SWITCH
OK -- Continue to next step.
2. CHECK WIRE HARNESS (ENGINE HOOD COURTESY SWITCH - BODY GROUND)





(a) Disconnect the E3 connector.
(b) Measure the resistance of the wire harness side connector.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
3. CHECK WIRE HARNESS (MULTIPLEX NETWORK BODY ECU - ENGINE HOOD COURTESY SWITCH)





(a) Disconnect the B9 ECU connector.
(b) Disconnect the E3 switch connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE