Keyless/Power Door Locks/Security System Symptom Troubleshooting Index

NOTE: If the door lock system and the keyless operation do not work, troubleshoot the door locks first. The system does not function when press the engine start/stop button to select the ON mode.

Symptom

Check Items

Also check for

The security system sounds randomly while the doors are locked.

Tripped sensor history

The horn does not sound and/or the headlights do not flash when the PANIC button on the remote is pressed

Symptom troubleshooting

Security alarm system will not arm

Symptom troubleshooting

All the doors will not lock or unlock with driver's door key cylinder or door lock switch or keyless transmitter

	Poor ground (G401, G501)
	Blown No. C1 (20 A), and/or No. C34 (7.5 A) fuse(s) in the under-dash fuse/relay box
	MICU input test
	Transmitter test

Driver's door will not lock or unlock

	Poor ground (G401, G501)
	Blown No. C5 (15 A) and/or No. C13 (15 A) fuse(s) in the under-dash fuse/relay box (without selectable unlock)
	Blown No. C6 (10 A) and/or No. C7 (10 A) fuse(s) in the under-dash fuse/relay box (with selectable unlock)
	Door switch test (check the door switch ON/OFF information with the HDS)
	Actuator test

Left rear door will not lock or unlock

	Poor ground (G401, G501)
	Blown No. C5 (15 A) and/or No. C13 (15 A) fuse(s) in the under-dash fuse/relay box
	MICU input test
	Door switch test (check the door switch ON/OFF information with the HDS)
	Actuator test

Front passenger's doors will not lock or unlock

	Poor ground (G401, G501)
	Blown No. C4 (15 A) and/or No. C12 (15 A) fuse(s) in the under-dash fuse/relay box
	MICU input test
	Door switch test (check the door switch ON/OFF information with the HDS)
	Actuator test

Right rear doors will not lock or unlock

	Poor ground (G401, G501)
	Blown No. C4 (15 A) and/or No. C12 (15 A) fuse(s) in the under-dash fuse/relay box
	MICU input test
	Door switch test (check the door switch ON/OFF information with the HDS)
	Actuator test

Passenger doors will not unlock with the keyless remote or key cylinder switch, but will unlock with the inside door unlock switch

Driver's door lock knob switch test (check for door lock knob switch ON/OFF information with the HDS)

Doors automatically relock 30 seconds after being unlocked with the keyless remote even though a door has been opened

Symptom troubleshooting

Auto door unlock does not work

Symptom troubleshooting