DTC 43, Key Resistor Circuit (CKT Open Or Shorted To Battery): Notes

PASS-Key II(R) input circuit and PASS-Key II(R) return circuit connect ignition lock cylinder to CCM. Contacts in ignition lock cylinder mate with pellet located on ignition key. CCM compares resistance value of key pellet to valid resistance programmed into CCM during vehicle manufacture.

DTC 43 will set when CCM detects a resistance of greater than 14,650 ohms or a short to battery in PASS-Key II(R) circuits with ignition switch in RUN position that lasts longer than 2 seconds. Ensure key resistor contacts are clean and free from grease, oil and contaminants that may interfere with key detection circuit and cause DTC to set. Ignition must be on for DTC 43 to set.

When DTC 43 is set, an open in PASS-Key II(R) return circuit will cause vehicle to exhibit a no-crank condition. An open or short to battery in PASS-Key II(R) input circuit will cause vehicle to exhibit a no-crank condition and PASS KEY FAULT indicator will flash. DTC 43 will clear if fault goes away for 2 or more seconds.