Test Procedure

Step	Procedure	Result / Action to Take
1	PERFORM: Preliminary Check to verify the customers complaint. Refer to PRELIMINARY CHECK . -- Was Complaint verified?	YES: GO TO Step 2 NO: GATHER more information from customer about the complaint.
2	IGNITION: OFF. DISCONNECT: Knock Sensor 1 -G61- harness connector. CHECK: Knock Sensor 1 -G61- component connector terminals 1 to 2 for resistance. SPECIFIED VALUE: ∞ 4800 Ω (+/- 500 Ω). -- Was Value obtained?	YES: GO TO Step 3 NO: REPLACE: Knock Sensor 1 -G61-. Refer to appropriate service information. GO TO: Step 4
3	REMOVE: Engine Control Module - J623-. Refer to appropriate service information. CHECK: Knock Sensor 1 -G61- harness connector terminals 1 to the Engine Control Module - J623- harness connector T60 / 8 for resistance. CHECK: Knock Sensor 1 -G61- harness connector terminals 2 to the Engine Control Module - J623- harness connector T60 / 9 for resistance. CHECK: Knock Sensor 1 -G61- harness connector terminals 3 to the Engine Control Module - J623- harness connector T60 / 40 for resistance. SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω). -- Were Values obtained?	YES: REPLACE: Engine Control Module -J623-. Refer to appropriate service information. GO TO: Step 4 NO: CHECK: Wiring for open, high resistance, short or harness connector for damage, corrosion, loose or broken terminals. REPAIR: Faulty wiring or connector. GO TO: Step 4
4	Final Procedure Perform a road test to verify repair. Do any DTC's return:	YES: Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY . Perform the diagnostic procedure for that DTC. NO: Repair is complete. Generate readiness code. Refer to READINESS CODE . Return vehicle to Customer.