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• When Monitored: • Set Condition: Possible Causes (G20) IGNITION SWITCH SENSE CIRCUIT OPEN (G900) IGNITION SWITCH SENSE RETURN CIRCUIT OPEN IGNITION SWITCH INSTRUMENT CLUSTER Diagnostic Test 1. CHECK FOR AN ACTIVE DTC Turn the ignition on. With the scan tool, record and erase DTCs Wait 30 seconds. With the scan tool, read DTCs. Is the DTC active? Yes >> Go To 2 No >> The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1). 2. CHECK THE (G20) IGNITION SWITCH SENSE CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off. Disconnect the Ignition Switch harness connector. Connect a jumper wire between Ignition Switch harness connector cav- NOTE: This will provide power to the vehicle systems with the Is the voltage above 5.4 volts? Yes >> Go To 3 No >> Go To 4 8J - 36 INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS LX |