Keyless Access System Touch Sensor Circuit Troubleshooting (2016-17)

WARNING: This page is about a different car, the 2016 Acura RDX, 2015 Acura RDX, 2014 Acura RDX, and 2013 Acura RDX. However, it is still accessible from the selected car via links, so may be relevant.

Touch Sensor Circuit Troubleshooting

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.

- 2. One-Push - KEYLESS ACCESS CONTROL UNIT- HISTORY DATA

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
- 3. Press the engine start/stop button to select the OFF 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.

- 6. 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
Is all the information OK?

YES

Intermittent failure, the system is OK at this time.

NO

Go to step 2.

Open wire check (GND line):

Press the engine start/stop button to select the OFF mode.

- 2. Disconnect the following connectors.

Each door outer handle 8P connector

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

Driver's door

Test condition	OFF modeDriver's door outer handle 8P connector: disconnected
Test circuit	GND
Test point 1	Driver's door outer handle 8P connector No. 8 (BLK)
Test point 2	Body ground

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

Front passenger's door

Test condition

OFF modeFront passenger's door outer handle 8P connector: disconnected

Test circuit	GND
Test point 1	Front passenger's door outer handle 8P connector No. 8 (BLK)
Test point 2	Body ground

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

Is there continuity?

YES

The GND wires are OK. Go to step 3.

Repair an open or high resistance in the ground wire or poor ground (G501, G506).

Determine possible failure area (TS line, VOUT line):

Measure the voltage between test points 1 and 2 individually.

Driver's door

Test condition	OFF modeDriver's door outer handle 8P connector: disconnected
Test circuit	VOUT FR DR
Test point 1	Driver's door outer handle 8P connector No. 4 (GRY)
Test point 2	Body ground

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

Front passenger's door

Test condition	OFF modeFront passenger's door outer handle 8P connector: disconnected
Test circuit	VOUT FR AS
Test point 1	Front passenger's door outer handle 8P connector No. 4 (LT BLU)
Test point 2	Body ground

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

Is there battery voltage?

YES

Go to step 4.

Go to step 7.

Open wire check (TS FR DR, TS FR AS lines):

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 8P connector No. 3 (LT GRN)
Terminal B	Body ground

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

Front passenger's door

Terminal A	Front passenger's door outer handle 8P connector No. 3 (GRY)
Terminal B	Body ground

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

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

Test condition	OFF modeEach door outer handle 8P connector: disconnectedEach door outer handle 8P connector: jumped to body groundKeyless access/TPMS control unit connector C (20P): disconnected
Test circuit	TS FR DR
Test point 1	Keyless access/TPMS control unit connector C (20P) No. 15 (GRY)
Test point 2	Body ground

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

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

Is there continuity?

YES

The TS FR DR and TS FR AS wires are not open. Go to step 5.

Repair an open or high resistance in the wire.

Shorted wire check (TS FR DR, TS FR AS lines):

Remove the jumper wires from the door outer handle connectors.

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

Test condition	OFF modeEach door outer handle 8P connector: disconnectedKeyless access/TPMS control unit connector C (20P): disconnected
Test circuit	TS FR DR
Test point 1	Keyless access/TPMS control unit connector C (20P) No. 15 (GRY)
Test point 2	Body ground

Test circuit

TS FR AS

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

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

Is there continuity?

YES

Repair a short to ground in the wire.

The TS FR DR and TS FR AS wires are OK. Go to step 6.

Door outer handle touch sensor check (substitution):
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 .

Open wire check (VOUT FR DR, VOUT FR AS lines):

Measure the voltage between test points 1 and 2 individually.

Test condition	OFF modeEach door outer handle 8P connector: disconnected
Test circuit	VOUT FR DR
Test point 1	Keyless access/TPMS control unit connector A (32P) No. 19 (RED)
Test point 2	Body ground

Test circuit	VOUT FR AS
Test point 1	Keyless access/TPMS control unit connector A (32P) No. 21 (LT GRN)
Test point 2	Body ground

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

Is there battery voltage?

YES

Repair an open or high resistance in the wire.

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