Keyless Access System Symptom Troubleshooting - The key-in reminder sounds in vehicle OFF (LOCK) mode when door is open
The key-in reminder sounds in vehicle OFF (LOCK) mode when door is open
1.
PCU DTC check:

PCU DTC check
?1.
Turn the vehicle to the ON mode.

?2.
Connect the HDS to the data link connector (DLC).

?3.
Check for DTCs in the POWER CONTROL UNIT with the HDS.
DTC Description
DTC
   


Are there any DTCs?

     
YES
     
     
     
Go to indicated DTC troubleshooting.?
     
NO
     
     
     
Go to step 2.
2.
Shorted wire check (KEY SW line):

Shorted wire check (KEY SW line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connectors.
Under-dash fuse/relay box connector D (24P)
Keyless access control unit connector A (32P)

?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector D (24P): disconnected
Keyless access control unit connector A (32P): disconnected
Test point 1
Keyless access control unit connector A (32P) No. 2
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
Repair a short to ground in the wire.?
     
NO
     
     
     
The KEY SW wire is not shorted. Go to step 3.
3.
Open wire check (KEY SW line):

Open wire check (KEY SW line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector D (24P): disconnected
Keyless access control unit connector A (32P): disconnected


Is there continuity?

     
YES
     
     
     
The KEY SW wire is OK. Go to step 4.
     
NO
     
     
     
Repair an open or high resistance in the wire.?
4.
Determine possible failure area (MICU, others):

Determine possible failure area (MICU, others)
?1.
Reconnect the following connector.
Under-dash fuse/relay box connector D (24P)

?2.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Keyless access control unit connector A (32P): disconnected

Test point 1
Under-dash fuse/relay box connector D (24P) No. 4
Test point 2
Body ground

Is there battery voltage?

     
YES
     
     
     
Go to step 5.
     
NO
     
     
     
5.
Keyless access control unit KEY SW line check:

Keyless access control unit KEY SW line check
?1.
Reconnect the following connector.
Keyless access control unit connector A (32P)

?2.
Turn the vehicle to the ON mode.

?3.
Select KEYLESS ACCESS CONTROL UNIT from the ONE-PUSH START system select menu with the HDS, and enter FUNCTIONAL TESTS.

  

?4.
Connect the voltmeter to test points 1 and 2.
Test point 1
Keyless access control unit connector A (32P) No. 2
Test point 2
Body ground

?5.
Select DRLOCKSWOUT with the HDS.

Does the voltage change from about 12 to 0 V?

     
YES
     
     
     
Go to step 6.
     
NO
     
     
     
6.
Keyless access control unit SS1(+) line check:

Keyless access control unit SS1(+) line check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Keyless access control unit connector B (36P)

?3.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Keyless access control unit connector B (36P): disconnected
Test point 1
Keyless access control unit connector B (36P) No. 10
Test point 2
Body ground

Is there about 0 V?

     
YES
     
     
     
Reconnect the connectors and recheck the system. If the symptom does not go away, replace the keyless access control unit.?
     
NO
     
     
     
Go to step 7.
7.
Open wire check (SS1(+) line):

Open wire check (SS1(+) line)
?1.
Disconnect the following connector.
Engine start/stop switch 12P connector

?2.
Do the engine start/stop switch test.

Is the engine start/stop switch OK?

     
YES
     
     
     
Repair an open or high resistance in the wire.?
     
NO