Keyless Access System Touch Sensor Circuit Troubleshooting

1.

Keyless access system check:

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.

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
	FRONT PASSENGER DOOR UNLOCK SWITCH

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

?4.	Get out of the vehicle with the keyless remote, and touch the driver's and front passenger's 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.

Recheck HISTORY DATA.

	DRIVER DOOR UNLOCK SWITCH
	FRONT PASSENGER DOOR UNLOCK SWITCH

Is all the information OK?


	YES

The system is OK at this time.?


	NO

Go to step 2.

2.

Open wire check (GND lines):

Open wire check (GND lines)

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.

Disconnect the following connectors.

Driver's door outer handle 8P connector
Front passenger's door outer handle 8P connector

?3.

Check for continuity between test points 1 and 2 individually.

Driver's door

Test condition	Vehicle OFF (LOCK) mode Driver's door outer handle 8P connector: disconnected
Test point 1	Driver's door outer handle 8P connector No. 8
Test point 2	Body ground

Front passenger's door

Test condition	Vehicle OFF (LOCK) mode Front passenger's door outer handle 8P connector: disconnected
Test point 1	Front passenger's door outer handle 8P connector No. 8
Test point 2	Body ground

Is there continuity?


	YES

The GND wires are OK. Go to step 3.


	NO

Repair an open or high resistance in the ground wire or poor ground (G401, G403).?

3.

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

Determine possible failure area (TS FR line, VOUT FR lines)

?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 8P connector: disconnected
Test point 1	Driver's door outer handle 8P connector No. 4
Test point 2	Body ground

Front passenger's door

Test condition	Vehicle OFF (LOCK) mode Front passenger's door outer handle 8P connector: disconnected
Test point 1	Front passenger's door outer handle 8P connector No. 4
Test point 2	Body ground

Is there battery voltage?


	YES

Go to step 4.


	NO

Go to step 7.

4.

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

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

?1.

Disconnect the following connector.

Keyless access control unit connector C (20P)

?2.

Check for continuity between test points 1 and 2 respectively.

Test condition	Vehicle OFF (LOCK) mode Driver's door outer handle 8P connector: disconnected Front passenger's door outer handle 8P connector: disconnected Keyless access control unit connector C (20P): disconnected
Test point 1	Keyless access control unit connector C (20P) No. 15
Test point 2	Driver's door outer handle 8P connector No. 3

Test point 1	Keyless access control unit connector C (20P) No. 17
Test point 2	Front passenger's door outer handle 8P connector No. 3

Is there continuity?


	YES

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


	NO

Repair an open or high resistance in the wire(s).?

5.

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

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

?1.

Check for continuity between test points 1 and 2 individually.

Test condition	Vehicle OFF (LOCK) mode Driver's door outer handle 8P connector: disconnected Front passenger's door outer handle 8P connector: disconnected Keyless access control unit connector C (20P): disconnected
Test point 1	Keyless access control unit connector C (20P) No. 15
Test point 2	Body ground

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

Is there continuity?


	YES

Repair a short to ground in the wire(s).?


	NO

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

6.

Door outer handle touch sensor check:

Door outer handle touch sensor check

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

Is the system OK?


	YES

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


	NO

Replace the keyless access control unit.?

7.

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

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

?1.

Disconnect the following connector.

Keyless access control unit connector A (32P)

?2.

Check for continuity between test points 1 and 2 respectively.

Test condition	Vehicle OFF (LOCK) mode Driver's door outer handle 8P connector: disconnected Front passenger's door outer handle 8P connector: disconnected Keyless access control unit connector A (32P): disconnected
Test point 1	Keyless access control unit connector A (32P) No. 19
Test point 2	Driver's door outer handle 8P connector No. 4

Test point 1	Keyless access control unit connector A (32P) No. 21
Test point 2	Front passenger's door outer handle 8P connector No. 4

Is there continuity?


	YES

The VOUT FR DR and VOUT FR AS wires are not open. Go to step 8.


	NO

Repair an open or high resistance in the wire(s).?

8.

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

Shorted wire check (VOUT FR DR, VOUT FR AS lines)

?1.

Check for continuity between test points 1 and 2 individually.

Test condition	Vehicle OFF (LOCK) mode Driver's door outer handle 8P connector: disconnected Front passenger's door outer handle 8P connector: disconnected Keyless access control unit connector A (32P): disconnected
Test point 1	Keyless access control unit connector A (32P) No. 19
Test point 2	Body ground

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

Is there continuity?


	YES

Repair a short to ground in the wire(s).?


	NO

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