For a complete wiring diagram Refer to Section 8W.When Monitored:With the ignition on.Set Condition:Over current condition detected on the (F200) Fused Ignition Switch Output (Run-Start) circuit.Possible Causes(F1) IGNITION SWITCH OUTPUT (UNLOCK-RUN-START) CIRCUIT SHORT TO GROUNDTERMINAL DAMAGE OR CORROSIONHIGH RESISTANCE ON THE (F1) FUSED IGNITION SWITCH OUTPUT (UNLOCK-RUN-START) CIRCUITPOWERTRAIN CONTROL MODULE (PCM)TIPM1. CHECK FOR ACTIVE DTCWith the scan tool, record and erase DTC's.Cycle the ignition switch from off to on, leaving the ignition off for a minimum of 30 seconds.With the scan tool, read the active DTC's.Does the scan tool display this DTC as active?YesGo To 2NoIf the DTC is stored, check for an intermittent condition. Using the wiring diagram/schematic as a guide, visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.2. CHECK THE (F1) IGNITION SWITCH OUTPUT (UNLOCK-RUN-START) CIRCUIT FOR A SHORT TO GROUND

Disconnect the TIPM C1 harness connector.Disconnect the PCM harness connector.Using a 12-volt test light connected to 12-volts, probe the (F1) Ignition Switch Output (Unlock-Run-Start) circuit in the TIPM harness connector.Does the test light illuminate brightly?YesRepair the (F1) Ignition Switch Output (Unlock-Run-Start) circuit for a short to ground.Perform BODY VERIFICATION TEST VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) NoGo To 33. INSPECT THE TIPM & PCM TERMINALS & WIRE HARNESS FOR A CONDITION CAUSING HIGH CIRCUIT RESISTANCE

Disconnect the TIPM C1 harness connector.Disconnect the PCM harness connector.Inspect the connector terminals for signs of corrosion build up and damage.Visually inspect the wiring harness for any chafed, pierced, pinched or partially broken wires hidden in the wire insulation.Were any of the above conditions found?YesRepair as necessary.Perform BODY VERIFICATION TEST VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) NoGo To 44. CHECK THE (F1) IGNITION SWITCH OUTPUT (UNLOCK-RUN-START) CIRCUIT FUNCTION

Connect one end of a jumper wire to the (F1) Ignition Switch Output (Unlock-Run-Start) circuit, and connect the other end to a clean chassis ground.The test light should be illuminated and bright. Compare the brightness to that of a direct connection to battery.Using a 12 volt test light connected to 12 volts, probe the (F1) Ignition Switch Output (Unlock-Run-Start) circuit in the TIPM C7 harness connector.Does the test light illuminate brightly?YesGo To 5NoRepair the Fused Ignition Switch Output (Run-Start) Circuit for high resistance.Perform BODY VERIFICATION TEST VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) 5. CHECK THE OUTPUT FROM THE TIPM ON THE (F1) IGNITION SWITCH OUTPUT (UNLOCK-RUN-START) CIRCUIT

Reconnect the TIPM C1 harness connector.Turn the ignition on.Using a 12 volt test light connected to ground, probe the (F1) Ignition Switch Output (Unlock-Run-Start) circuit.Does the test light illuminate brightly?YesReplace the PCM in accordance with the service information.Perform BODY VERIFICATION TEST VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) NoReplace the TIPM in accordance with the service information.Perform BODY VERIFICATION TEST VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)