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 the ignition switch is ON (II).

1. Symptom	Check Items	Also check for
   The security system sounds randomly while the doors are locked.	Tripped sensor history
   All the doors will not lock or unlock with driver's door key cylinder or door lock switch or keyless transmitter.	Poor ground (G501, G502, G504, G602) Blown No. B41 (20 A) fuse in the under-dash fuse/relay box Driver's door key cylinder switch test Door switch test (check the door switch ON/OFF information with the HDS) Door lock switch test (check the door lock switch ON/OFF information with the HDS) Transmitter test
   Trunk lid will not release with keyless transmitter.	Poor ground (G501, G502, G602) Blown No. B41 (20 A) fuse in the under-dash fuse/relay box Transmitter test
   Driver's door will not lock or unlock.	Poor ground (G501, G502, G602) Blown No. B15 (15 A) and/or No. B30 (15 A) fuse in the under-dash fuse/relay box Door switch test (check the door switch ON/OFF information with the HDS)
   Left rear door will not lock or unlock.	Poor ground (G501, G502, G602) Blown No. B9 (15 A) and/or No. B33 (15 A) fuse in the under-dash fuse/relay box MICU input test Door switch test (check the door switch ON/OFF information with the HDS)
   Front passenger's and right rear doors will not lock or unlock.	Poor ground (G501, G502, G504, G602) Blown No. B8 (15 A) and/or No. B32 (15 A) fuse in the under-dash fuse/relay box MICU input test Door switch test (check the door switch ON/OFF information with the HDS)
   Keyless operation does not work (LOCK, UNLOCK, PANIC).	Symptom troubleshooting - Refer to: Keyless/Power Door Locks/Security System Symptom Troubleshooting Keyless operation does not work (LOCK, UNLOCK, PANIC), .
   Doors will not unlock (or lock) with the transmitter, but will unlock (or lock) with the door lock switch and the door key cylinder switch.	Door lock switch test (check the door lock switch ON/OFF information with the HDS)
   Doors automatically relock 30 seconds after being unlocked with the transmitter even though a door has been opened.	Symptom troubleshooting - Refer to: Keyless/Power Door Locks/Security System Symptom Troubleshooting Doors automatically relock 30 seconds after being unlocked with the transmitter even though a door has been opened, . Door lock switch test (check the door lock switch ON/OFF information with the HDS) Driver's door lock knob switch test (check the door lock knob switch ON/OFF information with the HDS)
   The horn does not sound and/or the headlights do not flash when the PANIC button on the transmitter is pressed.	Symptom troubleshooting - Refer to: Keyless/Power Door Locks/Security System Symptom Troubleshooting The horn does not sound and/or the headlights do not flash when the PANIC button on the transmitter is pressed, .
   Only driver's door will unlock, or door locks relock immediately after unlocking with the remote.	Driver's door lock knob switch test
   Security alarm system will not arm.	Symptom troubleshooting - Refer to: Keyless/Power Door Locks/Security System Symptom Troubleshooting Security alarm system will not arm (2014 - 2015), .
   Auto door unlock does not work.	Symptom troubleshooting - Refer to: Keyless/Power Door Locks/Security System Symptom Troubleshooting Auto door unlock does not work (2012 - 2013), .