Keyless Entry System Symptom Diagnosis

NOTE: Confirm that power door lock system is in good condition before referring to the following possible causes.

KEYLESS ENTRY SYSTEM SYMPTOM DIAGNOSIS

Condition	Possible Cause	Action
All doors are not locked/unlocked by keyless entry transmitter	Transmitter battery dead	Replace transmitter battery referring to REPLACEMENT TRANSMITTER BATTERY .
	Door switch faulty	Check door switch referring to DOOR SWITCH INSPECTION .
	Transmitter faulty	Replace transmitter.
	Keyless entry receiver faulty	Check keyless entry receiver referring to KEYLESS ENTRY RECEIVER AND ITS CIRCUIT INSPECTION .
	Key reminder switch in ignition switch faulty	Replace ignition switch IGNITION (MAIN) SWITCH REMOVAL AND INSTALLATION .
	Wiring or grounding faulty	Repair circuit.
	BCM faulty	Check the system related circuits referring to INSPECTION OF BCM AND ITS CIRCUITS .
Turn signal lights are not flashed when doors are locked/unlocked by keyless entry transmitter	Turn signal and hazard warning relay faulty	Replace turn signal and hazard warning relay.
	Wiring or grounding faulty	Repair circuit.
	BCM faulty	Check the system related circuits referring to INSPECTION OF BCM AND ITS CIRCUITS .
Interior lights does not turn ON when doors are unlocked by keyless entry transmitter	Wiring or grounding faulty	Repair circuit.
	BCM faulty	Check the system related circuits referring to INSPECTION OF BCM AND ITS CIRCUITS .
Transmitter code does not program to keyless receiver	Door switch faulty	Check door switch referring to DOOR SWITCH INSPECTION .
	Key reminder switch in ignition switch faulty	Replace ignition switch IGNITION (MAIN) SWITCH REMOVAL AND INSTALLATION .
	Keyless entry receiver faulty	Check keyless entry receiver referring to KEYLESS ENTRY RECEIVER AND ITS CIRCUIT INSPECTION .
	Wiring or grounding faulty	Repair circuit.
	BCM faulty	Check the system related circuits referring to INSPECTION OF BCM AND ITS CIRCUITS .