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Theory of Operation The scan tool will display the door state NOT the switch state. It will display as True/False. True states that the door Possible Causes (G74) RIGHT FRONT DOOR AJAR SWITCH SENSE CIRCUIT SHORT TO GROUND DOOR LOCK MOTOR/AJAR SWITCH BODY CONTROL MODULE Diagnostic Test 1. CHECK FOR SHORTED DOOR AJAR SWITCH NOTE: For the Right Front Door Ajar state the scan tool will read Disconnect the Door Lock Motor/Ajar Switch connector. Does the scan tool display RIGHT FRONT DOOR AJAR SW: Yes >> Replace the Door Lock Motor/Ajar Switch. Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - CONTROL MODULES - STANDARD PROCEDURE) No >> Go To 2 2. CHECK FOR (G74) RIGHT FRONT DOOR AJAR SWITCH SENSE CIRCUIT SHORT TO GROUND Turn the ignition off. Disconnect the Body Control Module C1 harness connector. Measure the resistance between ground and the (G74) Right Front Is the resistance below 1000.0 ohms? Yes >> Replace the Body Control Module in accordance with ser- vice information. Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - CONTROL MODULES - STANDARD PROCEDURE) No >> Repair the (G74) Right Front Door Ajar Switch Sense circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - CONTROL MODULES - STANDARD PROCEDURE) 8L - 150 LAMPS/LIGHTING - INTERIOR - ELECTRICAL DIAGNOSTICS KJ |