Doors Automatically Relock 30 Seconds After Being Unlocked With The Remote Even Though A Door Has Been Opened

NOTE:  Before troubleshooting, check the B-CAN DTCs. If any DTC is indicated, troubleshoot the indicated DTC first.

1. Determine possible failure area (MICU, others)

   - 1. Turn the interior light switch to the DOOR position.

   - 2. Turn the vehicle to the OFF (LOCK) mode.

   - 3. Watch the individual map lights and the door indicators on the gauge control module.

   Do the individual map lights and door indicators come on when the door is open, and go off when the door is closed?

   YES 

   Faulty MICU; replace the under-dash fuse/relay box .

   NO 

   Go to step 2.

2. Open wire check (FL DOOR SW, FR DOOR SW, RL DOOR SW, RR DOOR SW, TRUNK SW lines)

   - 1. Disconnect the following connectors.

   Under-dash fuse/relay box connector D (44P) Under-dash fuse/relay box connector S (18P) Each door switch 1P connector Trunk lid latch 3P connector

   - 2. Check for continuity between test points 1 and 2 respectively.

   Driver's door switch 

   Test condition	Vehicle OFF (LOCK) mode Under-dash fuse/relay box connector D (44P): disconnected Under-dash fuse/relay box connector S (18P): disconnected Each door switch 1P connector: disconnected Trunk lid latch 3P connector: disconnected
   Test point 1	Under-dash fuse/relay box connector D (44P) No. 22 - Refer to: Keyless/Power Door Locks/Security System (MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test (2015-17) or Keyless/Power Door Locks/Security System (MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test (2018-19)
   Test point 2	Driver's door switch 1P connector No. 1

   Courtesy of HONDA, U.S.A., INC.

   Front passenger's door switch 

   Test condition	Vehicle OFF (LOCK) mode Under-dash fuse/relay box connector D (44P): disconnected Under-dash fuse/relay box connector S (18P): disconnected Each door switch 1P connector: disconnected Trunk lid latch 3P connector: disconnected
   Test point 1	Under-dash fuse/relay box connector S (18P) No. 13 - Refer to: Keyless/Power Door Locks/Security System (MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test (2015-17) or Keyless/Power Door Locks/Security System (MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test (2018-19)
   Test point 2	Front passenger's door switch 1P connector No. 1

   Courtesy of HONDA, U.S.A., INC.

   Left rear door switch 

   Test condition	Vehicle OFF (LOCK) mode Under-dash fuse/relay box connector D (44P): disconnected Under-dash fuse/relay box connector S (18P): disconnected Each door switch 1P connector: disconnected Trunk lid latch 3P connector: disconnected
   Test point 1	Under-dash fuse/relay box connector D (44P) No. 23 - Refer to: Keyless/Power Door Locks/Security System (MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test (2015-17) or Keyless/Power Door Locks/Security System (MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test (2018-19)
   Test point 2	Left rear door switch 1P connector No. 1

   Courtesy of HONDA, U.S.A., INC.

   Right rear door switch 

   Test condition	Vehicle OFF (LOCK) mode Under-dash fuse/relay box connector D (44P): disconnected Under-dash fuse/relay box connector S (18P): disconnected Each door switch 1P connector: disconnected Trunk lid latch 3P connector: disconnected
   Test point 1	Under-dash fuse/relay box connector S (18P) No. 14 - Refer to: Keyless/Power Door Locks/Security System (MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test (2015-17) or Keyless/Power Door Locks/Security System (MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test (2018-19)
   Test point 2	Right rear door switch 1P connector No. 1

   Courtesy of HONDA, U.S.A., INC.

   Trunk lid latch switch 

   Test condition	Vehicle OFF (LOCK) mode Under-dash fuse/relay box connector D (44P): disconnected Under-dash fuse/relay box connector S (18P): disconnected Each door switch 1P connector: disconnected Trunk lid latch 3P connector: disconnected
   Test point 1	Under-dash fuse/relay box connector D (44P) No. 37 - Refer to: Keyless/Power Door Locks/Security System (MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test (2015-17) or Keyless/Power Door Locks/Security System (MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test (2018-19)
   Test point 2	Trunk lid latch 3P connector No. 1

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The FL DOOR SW, FR DOOR SW, RL DOOR SW, and RR DOOR SW wires are OK. Replace the bad door switch.

   YES 

   The TRUNK SW wire is OK. Faulty trunk lid latch switch or GND line, go to step 3.

   NO 

   Repair an open or high resistance in the wire between the MICU and the door switch/trunk lid latch switch.

3. Open wire check (GND line)

   - 1. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Under-dash fuse/relay box connector D (44P): disconnected Under-dash fuse/relay box connector S (18P): disconnected Each door switch 1P connector: disconnected Trunk lid latch 3P connector: disconnected
   Test point 1	Trunk lid latch 3P connector No. 2
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The GND wire is OK. Faulty trunk lid latch switch; replace the trunk lid latch .

   NO 

   Repair an open or high resistance in the ground wire or poor ground (G403).