Power Door Locks/Keyless

WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

Check for B-CAN DTCs If any B-CAN DTCs are indicated, refer to the B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ) and resolve them first
If the door lock system and the keyless operation do not work, troubleshoot the door locks first

NOTE: The system does not function when the ignition switch is ON (II), or the vehicle ignition in the ON mode

SYMPTOM CHART

Symptom

Check Items

Also check for

All the doors will not lock or unlock with driver's door key cylinder or door lock switch or keyless transmitter ⁽¹⁾

Poor ground (G401, G402, G405, G601, G651)
Driver's door key cylinder switch test (see 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 switch ON/OFF information with the HDS)
Also, check for continuity of or a short on the UART line between door multiplex control unit 37P connector terminal No 27 and front passenger's power window switch 37P connector terminal No 29

Driver's and left rear doors will not lock or unlock with driver's door key cylinder or door lock switch or keyless transmitter

Poor ground (G401, G402, G601)
Blown No 24 (20 A) fuse in the driver's under-dash fuse/relay box
Blown No 25 (15 A) fuse in the driver's under-dash fuse/relay box
Driver's MICU input test (see CONTROL UNIT INPUT TEST )
Door multiplex control unit input test (see CONTROL UNIT INPUT TEST )

Front passenger's and right rear doors will not lock or unlock with driver's door key cylinder or door lock switch or keyless transmitter

Poor ground (G201, G203, G401, G405)
Blown No 1-2 (AS F/B) (40 A) fuse in the under-hood fuse/relay box
Blown No 10 (10 A) fuse in the passenger's under-dash fuse/relay box
Blown No 13 (20 A) fuse in the passenger's under-dash fuse/relay box
Passenger's MICU input test (see CONTROL UNIT INPUT TEST )
Door multiplex control unit input test (see CONTROL UNIT INPUT TEST )

Keyless operation does not work (LOCK, UNLOCK, PANIC)

Symptom troubleshooting (see KEYLESS OPERATION DOES NOT WORK (LOCK, UNLOCK, PANIC) )

Customized settings in the multi-information display (MID), see Owner's manual for details

Doors will not unlock with the transmitter, but will unlock with the door lock switch and the door key cylinder switch

Symptom troubleshooting (see KEYLESS OPERATION DOES NOT WORK (LOCK, UNLOCK, PANIC) )
Door lock switch test (check the door switch ON/OFF information with the HDS)

Doors will not lock with the transmitter, but will lock with the door lock switch and the door key cylinder switch

Symptom troubleshooting (see KEYLESS OPERATION DOES NOT WORK (LOCK, UNLOCK, PANIC) )
Door lock switch test (check the door 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 (see THE HORN DOES NOT SOUND AND/OR THE HEADLIGHTS DO NOT FLASH WHEN THE PANIC BUTTON ON THE TRANSMITTER IS PRESSED )
Door switch test (check the door switch ON/OFF information with the HDS)

Only driver's door will unlock or door locks relock immediately after unlocking with the remote

Driver's door lock knob switch test (see DOOR LOCK ACTUATOR TEST )

Trunk lid release actuator will not work when the trunk lid outer handle switch is pressed

Lock knob switch is faulty
Open lock knob switch unlock input wire
Door lock actuator is faulty

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

Symptom troubleshooting (see THE HORN DOES NOT SOUND AND/OR THE HEADLIGHTS DO NOT FLASH WHEN THE PANIC BUTTON ON THE TRANSMITTER IS PRESSED )

Customized settings in the multi-information display (MID), see Owner's manual for details

Keyless operation will work even though the ignition key is in the ignition switch

Ignition key switch test (see IGNITION KEY SWITCH TEST )

⁽¹⁾	If only one door is not working properly, check that door's lock actuator first, then check the other items listed in this table