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Theory of Operation The Tire Pressure Trigger Module is used to automatically learn the location of each wheel sensor on the vehicle. • When Monitored: • Set Condition: Possible Causes INTERMITTENT TIRE PRESSURE TRIGGER MODULE PERFORMANCE DTC (F202) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN OR HIGH RESISTANCE (Z904) GROUND CIRCUIT(S) OPEN OR HIGH RESISTANCE TIRE PRESSURE TRIGGER MODULE WIRELESS CONTROL MODULE (SKREEM) Diagnostic Test 1. DTC STATUS IS ACTIVE NOTE: If the incorrect Placard Values were programmed into the WCM/SKREEM, a DTC could be set. Before NOTE: If a system or battery voltage high DTC is set in the Wireless Control Module (SKREEM) or in the Is the DTC status Active at this time? Yes >> Go to 2 No >> Go to 6 2. (F202) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition on. Using a 12–volt test light connect to ground, check the (F202) Fused NOTE: The test light should be illuminated and bright. Compare Is the test light illuminated and bright? Yes >> Go to 3 No >> Repair the (F202) Fused Ignition Switch Output (Run) circuit for an open circuit or high resistance. Perform TPM VERIFICATION TEST. (Refer to 22 - TIRES/ PM TIRES/WHEELS - ELECTRICAL DIAGNOSIS 22 - 23 |