Keyless Access System Symptom Troubleshooting - Cannot select ON mode with keyless access, but can select ON mode with the keyless remote touching the engine start/stop switch

1.

Keyless access system check 1:

Keyless access system check 1

?1.	Push the LOCK and the UNLOCK buttons of the keyless remote, and check if the LED on the keyless remote comes on.

Does the LED come on?


	YES

Go to step 2.


	NO

Replace the keyless remote battery and recheck the system. If the symptom does not go away, replace the keyless remote.?

2.

Determine possible failure area (keyless access control unit, others):

Determine possible failure area (keyless access control unit, others)

?1.	Touch the engine start/stop switch with the keyless remote. The buttons on the keyless remote should be facing you.

?2.	Press the engine start/stop button to select the ON mode.

?3.	Connect the HDS to the data link connector (DLC).

?4.	Select KEYLESS ACCESS CONTROL UNIT from the ONE-PUSH START system select menu with the HDS, and enter SELF CHECK.

Does the system communicate with the HDS?


	YES

Go to step 3.


	NO

Do the keyless access control unit input test.?

3.

Keyless access and backup control unit DTC check:

Keyless access and backup control unit DTC check

?1.

Check for KEYLESS ACCESS CONTROL UNIT and BACKUP CONTROL UNIT DTCs with the HDS.

DTC Description	DTC

DTC Description	DTC

Are any DTCs indicated?


	YES

Go to the indicated DTCs troubleshooting.?


	NO

Go to step 4.

4.

Keyless access system check 2:

Keyless access system check 2

?1.	Select HISTORY DATA from the KEYLESS ACCESS CONTROL UNIT mode menu with the HDS.

?2.	Select HISTORY CLEAR, and back to TEST MODE MENU.

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

?4.	Touch the engine start/stop switch with the keyless remote. The buttons on the keyless remote should be facing you.

?5.	Press the engine start/stop button to select the ON mode.

?6.

Select HISTORY DATA from the KEYLESS ACCESS CONTROL UNIT mode menu with the HDS.

History Data

ENGINE START/STOP SWITCH 1 (?)	ON
ENGINE START/STOP SWITCH 2 (?)	ON

Is all the information ON?


	YES

Go to step 6.


	NO

Go to step 5.

5.

Open wire check (SS1 (+), SS2 (-) lines):

Open wire check (SS1 (+), SS2 (-) lines)

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

?2.

Disconnect the following connectors.

Engine start/stop switch 10P connector
Keyless access control unit connector B (28P)

?3.

Check for continuity between test points 1 and 2 respectively.

Test condition	OFF mode Engine start/stop switch 10P connector: disconnected Keyless access control unit connector B (28P): disconnected
Test circuit	SS1 (+)
Test point 1	Keyless access control unit connector B (28P) No. 12 (BLU)
Test point 2	Engine start/stop switch 10P connector No. 4 (BLU)

Test circuit	SS2 (-)
Test point 1	Keyless access control unit connector B (28P) No. 8 (GRN)
Test point 2	Engine start/stop switch 10P connector No. 1 (GRN)

Is there continuity?


	YES

The SS1 (+) and SS2 (-) wires are OK. Replace the keyless access control unit.?


	NO

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

6.

Determine possible failure area (keyless remote, others):

Determine possible failure area (keyless remote, others)

?1.	Select KEYLESS TRANSMITTER from the BODY ELECTRICAL SYSTEM SELECT menu, then select INSPECTION, then KEYLESS CHECK.

?2.	Do the KEYLESS CHECK with the HDS using the keyless remote.

Is DIFFERENT KEYLESS ENTRY TRANSMITTER CODE IS RECEIVED indicated?


	YES

Register the keyless remote, and recheck. If the symptom does not go away, replace the keyless remote.?


	NO

Go to step 7.

7.

Keyless remote check (substitution):

Keyless remote check (substitution)

?1.	Substitute a known-good keyless remote, then recheck the system.

Does the system change to ON mode?


	YES

Replace the original keyless remote.?


	NO

Replace the keyless access control unit.?