Keyless Access System Touch Sensor Circuit Troubleshooting

NOTE:  Some models have the rear outer handle touch sensor. Perform the troubleshooting flow where applicable.

1. Keyless access system check

   - 1. Select KEYLESS ACCESS CONTROL UNIT from the ONE-PUSH START system select menu with the HDS, and enter HISTORY DATA.

   One-Push - KEYLESS ACCESS CONTROL UNIT- HISTORY DATA

   - 2. Select HISTORY CLEAR, and back to TEST MODE menu:

   NOTE:  When the freeze data is cleared, the information indicates "NOT CONFIRMED".

   • DRIVER DOOR UNLOCK SWITCH
   • DRIVER DOOR LOCK SWITCH
   • FRONT PASSENGER DOOR UNLOCK SWITCH
   • FRONT PASSENGER DOOR LOCK SWITCH
   • DRIVER SIDE REAR DOOR UNLOCK SWITCH
   • DRIVER SIDE REAR DOOR LOCK SWITCH
   • PASSENGER SIDE REAR DOOR UNLOCK SWITCH
   • PASSENGER SIDE REAR DOOR LOCK SWITCH

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

   - 4. Get out of the vehicle with the keyless remote, and touch the each door outer handle touch sensor and push the lock button.

   - 5. Select KEYLESS ACCESS CONTROL UNIT from the ONE-PUSH START system select menu with the HDS, and enter HISTORY DATA.

   One-Push - KEYLESS ACCESS CONTROL UNIT- HISTORY DATA

   Recheck HISTORY DATA.

   • DRIVER DOOR UNLOCK SWITCH
   • DRIVER DOOR LOCK SWITCH
   • FRONT PASSENGER DOOR UNLOCK SWITCH
   • FRONT PASSENGER DOOR LOCK SWITCH
   • DRIVER SIDE REAR DOOR UNLOCK SWITCH
   • DRIVER SIDE REAR DOOR LOCK SWITCH
   • PASSENGER SIDE REAR DOOR UNLOCK SWITCH
   • PASSENGER SIDE REAR DOOR LOCK SWITCH

   Is all the information OK?

   YES 

   Intermittent failure, the system is OK at this time.

   NO 

   Go to step 2.

2. Open wire check (SGND/PGND line)

   - 1. Disconnect the following connectors.

   Each door outer handle 4P connectors

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

   Driver's door 

   Test condition	Vehicle OFF (LOCK) mode Driver's door outer handle 4P connector: disconnected
   Test point 1	Driver's door outer handle 4P connector No. 4
   Test point 2	Body ground

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

   Front passenger's door 

   Test condition	Vehicle OFF (LOCK) mode Front passenger's door outer handle 4P connector: disconnected
   Test point 1	Front passenger's door outer handle 4P connector No. 4
   Test point 2	Body ground

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

   Left rear door 

   Test condition	Vehicle OFF (LOCK) mode Left rear door outer handle 4P connector: disconnected
   Test point 1	Left rear door outer handle 4P connector No. 4
   Test point 2	Body ground

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

   Right rear door 

   Test condition	Vehicle OFF (LOCK) mode Right rear door outer handle 4P connector: disconnected
   Test point 1	Right rear door outer handle 4P connector No. 4
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   The SGND/PGND wires are OK. Go to step 3.

   NO 

   Repair an open or high resistance in the ground wire or poor ground (G301, G306, G404, G501).

3. Determine possible failure area (TS line, VOUT line)

   - 1. Measure the voltage between test points 1 and 2 individually.

   Driver's door 

   Test condition	Vehicle OFF (LOCK) mode Driver's door outer handle 4P connector: disconnected
   Test point 1	Driver's door outer handle 4P connector No. 1
   Test point 2	Body ground

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

   Front passenger's door 

   Test condition	Vehicle OFF (LOCK) mode Front passenger's door outer handle 4P connector: disconnected
   Test point 1	Front passenger's door outer handle 4P connector No. 1
   Test point 2	Body ground

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

   Left rear door 

   Test condition	Vehicle OFF (LOCK) mode Left rear door outer handle 4P connector: disconnected
   Test point 1	Left rear door outer handle 4P connector No. 1
   Test point 2	Body ground

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

   Right rear door 

   Test condition	Vehicle OFF (LOCK) mode Right rear door outer handle 4P connector: disconnected
   Test point 1	Right rear door outer handle 4P connector No. 1
   Test point 2	Body ground

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

   Is there battery voltage?

   YES 

   Go to step 4.

   NO 

   Go to step  7.

4. Open wire check (TS FR DR, TS FR AS, TS RR L, TS RR R lines)

   - 1. Disconnect the following connector.

   Keyless access/TPMS control unit connector C (20P)

   - 2. Connect terminals A and B with jumper wires.

   Driver's door 

   Terminal A	Driver's door outer handle 4P connector No. 2
   Terminal B	Body ground

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

   Front passenger's door 

   Terminal A	Front passenger's door outer handle 4P connector No. 2
   Terminal B	Body ground

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

   Left rear door 

   Terminal A	Left rear door outer handle 4P connector No. 2
   Terminal B	Body ground

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

   Right rear door 

   Terminal A	Right rear door outer handle 4P connector No. 2
   Terminal B	Body ground

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

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

   Test condition	Vehicle OFF (LOCK) mode Each door outer handle 4P connectors: disconnected Each door outer handle 4P connectors: jumped to body ground Keyless access/TPMS control unit connector C (20P): disconnected
   Test point 1	Keyless access/TPMS control unit connector C (20P) No. 15
   Test point 2	Body ground

   Test point 1	Keyless access/TPMS control unit connector C (20P) No. 17
   Test point 2	Body ground

   Test point 1	Keyless access/TPMS control unit connector C (20P) No. 20
   Test point 2	Body ground

   Test point 1	Keyless access/TPMS control unit connector C (20P) No. 19
   Test point 2	Body ground

   Is there continuity?

   YES 

   The TS FR DR, TS FR AS, TS RR L, and TS RR R wires are not open. Go to step 5.

   NO 

   Repair an open or high resistance in the wire.

5. Shorted wire check (TS FR DR, TS FR AS, TS RR L, TS RR R lines)

   - 1. Remove the jumper wires from the door outer handle connectors.

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

   Test condition	Vehicle OFF (LOCK) mode Each door outer handle 4P connectors: disconnected Keyless access/TPMS control unit connector C (20P): disconnected
   Test point 1	Keyless access/TPMS control unit connector C (20P) No. 15
   Test point 2	Body ground

   Test point 1	Keyless access/TPMS control unit connector C (20P) No. 17
   Test point 2	Body ground

   Test point 1	Keyless access/TPMS control unit connector C (20P) No. 20
   Test point 2	Body ground

   Test point 1	Keyless access/TPMS control unit connector C (20P) No. 19
   Test point 2	Body ground

   Is there continuity?

   YES 

   Repair a short to ground in the wire.

   NO 

   The TS FR DR, TS FR AS, TS RR L, and TS RR R wires are OK. Go to step 6.

6. Door outer handle touch sensor check (substitution)

   - 1. Substitute a known-good door outer handle touch sensor, and recheck.

   Is the system OK?

   YES 

   Faulty the original door outer handle touch sensor; replace the door outer handle .

   NO 

   Replace the keyless access/TPMS control unit .

7. Open wire check (VOUT FR DR, VOUT FR AS, VOUT RR L, VOUT RR R lines)

   - 1. Measure the voltage between test points 1 and 2 individually.

   Test condition	Vehicle OFF (LOCK) mode Each door outer handle 4P connectors: disconnected
   Test point 1	Keyless access/TPMS control unit connector A (32P) No. 19
   Test point 2	Body ground

   Test point 1	Keyless access/TPMS control unit connector A (32P) No. 21
   Test point 2	Body ground

   Test point 1	Keyless access/TPMS control unit connector A (32P) No. 18
   Test point 2	Body ground

   Test point 1	Keyless access/TPMS control unit connector A (32P) No. 22
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   Repair an open or high resistance in the wire.

   NO 

   The VOUT FR DR, VOUT FR AS, VOUT RR L, and VOUT RR R wires are OK. Replace the keyless access/TPMS control unit .