Keyless/Power Door Locks/Security System Symptom Troubleshooting - AUTO DOOR UNLOCK does not work
AUTO DOOR UNLOCK does not work
NOTE:
Before testing, check the No. C1 (20 A), No. C4 (15 A), No. C5 (15 A), No. C6 (10 A), No. C7 (10 A), No. C12 (15 A), and No. C13 (15 A) fuses in the under-dash fuse/relay box.
There are two pairs of fuses in the same circuit (No. C4 and No. C5 fuses, No. C6 and No. C7 fuses, No. C12 and No. C13 fuses). If one fuse is blown, make sure to check the other fuse in the same circuit. If necessary, replace the blown fuse(s).
1.
Abnormal circuit check 1:

Abnormal circuit check 1
?1.
Connect the HDS to the data link connector (DLC).

?2.
Select DOOR LOCKS from the BODY ELECTRICAL SYSTEM SELECT menu with the HDS, and enter FUNCTIONAL TESTS.

  

?3.
Select UNLOCK ALL DOORS with the HDS.

Do the door lock actuators work normally?

     
YES
     
     
     
Go to step 22.
     
NO
     
     
     
Driver's door lock circuit: go to step 2.
     
NO
     
     
     
Front passenger's door lock circuit: go to step 7.
     
NO
     
     
     
Left rear door lock circuit: go to step 12.
     
NO
     
     
     
Right rear door lock circuit: go to step 17.
2.
Open wire check (+B F/BOX MAIN2 line):

Open wire check (+B F/BOX MAIN2 line)
?1.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Test point 1
Under-dash fuse/relay box connector R (2P) No. 2
Test point 2
Body ground

Is there battery voltage?

     
YES
     
     
     
The +B F/BOX MAIN2 wire is OK. Go to step 3.
     
NO
     
     
     
Repair an open or high resistance in the wire.?
3.
Open wire check (GND lines):

Open wire check (GND lines)
?1.
Disconnect the following connectors.
Under-dash fuse/relay box connector H (20P)
Under-dash fuse/relay box connector N (52P)

?2.
Check for continuity between test points 1 and 2 individually.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector H (20P): disconnected
Under-dash fuse/relay box connector N (52P): disconnected
Test point 1
Under-dash fuse/relay box connector H (20P) No. 1
Test point 2
Body ground

Test point 1
Under-dash fuse/relay box connector N (52P) No. 6
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
The GND wires is OK. Go to step 4.
     
NO
     
     
     
Repair an open or high resistance in the ground wires or poor ground (G401, G501).?
4.
Determine possible failure area (door latch, others):

Determine possible failure area (door latch, others)
?1.
Disconnect the following connector.
Driver's door latch 10P connector

?2.
Test the door lock actuator.

Is the door lock actuator OK?

     
YES
     
     
     
Go to step 5.
     
NO
     
     
     
Faulty door lock actuator; replace the door latch.?
5.
Open wire check (DR DOOR UNLOCK line):

Open wire check (DR DOOR UNLOCK line)
?1.
Disconnect the following connector.
Under-dash fuse/relay box connector N (52P)

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector H (20P): disconnected
Under-dash fuse/relay box connector N (52P): disconnected
Driver's door latch 10P connector: disconnected
Test point 1
Under-dash fuse/relay box connector N (52P) No. 17
Test point 2
Driver's door latch 10P connector No. 1


Is there continuity?

     
YES
     
     
     
The DR DOOR UNLOCK wire is OK. Go to step 6.
     
NO
     
     
     
Repair an open or high resistance in the wire.?
6.
Open wire check (DR DOOR LOCK line):

Open wire check (DR DOOR LOCK line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector H (20P): disconnected
Under-dash fuse/relay box connector N (52P): disconnected
Driver's door latch 10P connector: disconnected
Test point 1
Under-dash fuse/relay box connector N (52P) No. 16
Test point 2
Driver's door latch 10P connector No. 4


Is there continuity?

     
YES
     
     
     
The DR DOOR LOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?
     
NO
     
     
     
Repair an open or high resistance in the wire.?
7.
Open wire check (+B F/BOX MAIN2 line):

Open wire check (+B F/BOX MAIN2 line)
?1.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Test point 1
Under-dash fuse/relay box connector R (2P) No. 2
Test point 2
Body ground

Is there battery voltage?

     
YES
     
     
     
The +B F/BOX MAIN2 wire is OK. Go to step 8.
     
NO
     
     
     
Repair an open or high resistance in the wire.?
8.
Open wire check (GND lines):

Open wire check (GND lines)
?1.
Disconnect the following connectors.
Under-dash fuse/relay box connector H (20P)
Under-dash fuse/relay box connector N (52P)

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector H (20P): disconnected
Under-dash fuse/relay box connector N (52P): disconnected
Test point 1
Under-dash fuse/relay box connector H (20P) No. 1
Test point 2
Body ground

Test point 1
Under-dash fuse/relay box connector N (52P) No. 6
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
The GND wires are OK. Go to step 9.
     
NO
     
     
     
Repair an open or high resistance in the ground wires or poor ground (G401, G501).?
9.
Determine possible failure area (door latch, others):

Determine possible failure area (door latch, others)
?1.
Disconnect the following connector.
Front passenger's door latch 10P connector

?2.
Test the door lock actuator.

Is the door lock actuator OK?

     
YES
     
     
     
Go to step 10.
     
NO
     
     
     
Faulty door lock actuator; replace the door latch.?
10.
Open wire check (R SIDE DOOR UNLOCK line):

Open wire check (R SIDE DOOR UNLOCK line)
?1.
Disconnect the following connector.
Under-dash fuse/relay box connector F (8P)

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector H (20P): disconnected
Under-dash fuse/relay box connector N (52P): disconnected
Under-dash fuse/relay box connector F (8P): disconnected
Front passenger's door latch 10P connector: disconnected
Test point 1
Under-dash fuse/relay box connector F (8P) No. 8
Test point 2
Front passenger's door latch 10P connector No. 1


Is there continuity?

     
YES
     
     
     
The R SIDE DOOR UNLOCK wire is OK. Go to step 11.
     
NO
     
     
     
Repair an open or high resistance in the wire.?
11.
Open wire check (R SIDE DOOR LOCK line):

Open wire check (R SIDE DOOR LOCK line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector H (20P): disconnected
Under-dash fuse/relay box connector N (52P): disconnected
Under-dash fuse/relay box connector F (8P): disconnected
Front passenger's door latch 10P connector: disconnected
Test point 1
Under-dash fuse/relay box connector F (8P) No. 2
Test point 2
Front passenger's door latch 10P connector No. 4


Is there continuity?

     
YES
     
     
     
The R SIDE DOOR LOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?
     
NO
     
     
     
Repair an open or high resistance in the wire.?
12.
Open wire check (+B F/BOX MAIN2 line):

Open wire check (+B F/BOX MAIN2 line)
?1.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Test point 1
Under-dash fuse/relay box connector R (2P) No. 2
Test point 2
Body ground

Is there battery voltage?

     
YES
     
     
     
The +B F/BOX MAIN2 wire is OK. Go to step 13.
     
NO
     
     
     
Repair an open or high resistance in the wire.?
13.
Open wire check (GND lines):

Open wire check (GND lines)
?1.
Disconnect the following connectors.
Under-dash fuse/relay box connector H (20P)
Under-dash fuse/relay box connector N (52P)

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector H (20P): disconnected
Under-dash fuse/relay box connector N (52P): disconnected
Test point 1
Under-dash fuse/relay box connector H (20P) No. 1
Test point 2
Body ground

Test point 1
Under-dash fuse/relay box connector N (52P) No. 6
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
The GND wires are OK. Go to step 14.
     
NO
     
     
     
Repair an open or high resistance in the ground wires or poor ground (G401, G501).?
14.
Determine possible failure area (door latch, others):

Determine possible failure area (door latch, others)
?1.
Disconnect the following connector.
Left rear door latch 10P connector

?2.
Test the door lock actuator.

Is the door lock actuator OK?

     
YES
     
     
     
Go to step 15.
     
NO
     
     
     
Faulty door lock actuator; replace the door latch.?
15.
Open wire check (L SIDE DOOR UNLOCK line):

Open wire check (L SIDE DOOR UNLOCK line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector H (20P): disconnected
Under-dash fuse/relay box connector N (52P): disconnected
Left rear door latch 10P connector: disconnected
Test point 1
Under-dash fuse/relay box connector N (52P) No. 3
Test point 2
Left rear door latch 10P connector No. 1


Is there continuity?

     
YES
     
     
     
The L SIDE DOOR UNLOCK wire is OK. Go to step 16.
     
NO
     
     
     
Repair an open or high resistance in the wire.?
16.
Open wire check (L SIDE DOOR LOCK line):

Open wire check (L SIDE DOOR LOCK line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector H (20P): disconnected
Under-dash fuse/relay box connector N (52P): disconnected
Left rear door latch 10P connector: disconnected
Test point 1
Under-dash fuse/relay box connector N (52P) No. 7
Test point 2
Left rear door latch 10P connector No. 4


Is there continuity?

     
YES
     
     
     
The L SIDE DOOR LOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?
     
NO
     
     
     
Repair an open or high resistance in the wire.?
17.
Open wire check (+B F/BOX MAIN2 line):

Open wire check (+B F/BOX MAIN2 line)
?1.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Test point 1
Under-dash fuse/relay box connector R (2P) No. 2
Test point 2
Body ground

Is there battery voltage?

     
YES
     
     
     
The +B F/BOX MAIN2 wire is OK. Go to step 18.
     
NO
     
     
     
Repair an open or high resistance in the wire.?
18.
Open wire check (GND lines):

Open wire check (GND lines)
?1.
Disconnect the following connectors.
Under-dash fuse/relay box connector H (20P)
Under-dash fuse/relay box connector N (52P)

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector H (20P): disconnected
Under-dash fuse/relay box connector N (52P): disconnected
Test point 1
Under-dash fuse/relay box connector H (20P) No. 1
Test point 2
Body ground

Test point 1
Under-dash fuse/relay box connector N (52P) No. 6
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
The GND wires are OK. Go to step 19.
     
NO
     
     
     
Repair an open or high resistance in the ground wires or poor ground (G401, G501).?
19.
Determine possible failure area (door latch, others):

Determine possible failure area (door latch, others)
?1.
Disconnect the following connector.
Right rear door latch 10P connector

?2.
Test the door lock actuator.

Is the door lock actuator OK?

     
YES
     
     
     
Go to step 20.
     
NO
     
     
     
Faulty door lock actuator; replace the door latch.?
20.
Open wire check (R SIDE DOOR UNLOCK line):

Open wire check (R SIDE DOOR UNLOCK line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector H (20P): disconnected
Under-dash fuse/relay box connector N (52P): disconnected
Right rear door latch 10P connector: disconnected
Test point 1
Under-dash fuse/relay box connector N (52P) No. 14
Test point 2
Right rear door latch 10P connector No. 1


Is there continuity?

     
YES
     
     
     
The R SIDE DOOR UNLOCK wire is OK. Go to step 21.
     
NO
     
     
     
Repair an open or high resistance in the wire.?
21.
Open wire check (R SIDE DOOR LOCK line):

Open wire check (R SIDE DOOR LOCK line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector H (20P): disconnected
Under-dash fuse/relay box connector N (52P): disconnected
Right rear door latch 10P connector: disconnected
Test point 1
Under-dash fuse/relay box connector N (52P) No. 13
Test point 2
Right rear door latch 10P connector No. 4


Is there continuity?

     
YES
     
     
     
The R SIDE DOOR LOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?
     
NO
     
     
     
Repair an open or high resistance in the wire.?
22.
Abnormal circuit check 2:

Abnormal circuit check 2
?1.
Check the parameter(s) below with the HDS when each switch is operating.
Door Multiplex Control Unit
Signal
Current conditions
Value
Unit
Driver's Door Lock Knob Switch (UNLOCK)
    
Passenger's Door Lock Knob Switch (UNLOCK)
    

MICU
Signal
Current conditions
Value
Unit
A/T Gear Position Switch (P)
    
Driver's Rear Door Lock Knob Switch (UNLOCK)
    
Passenger's Rear Door Lock Knob Sw. (UNLOCK)
    

Is each switch information OK?

     
YES
     
     
     
     
NO
     
     
     
Transmission range switch P position circuit troubleshooting: go to step 23.
     
NO
     
     
     
Driver's door lock knob switch circuit troubleshooting: go to step 29.
     
NO
     
     
     
Front passenger's door lock knob switch circuit troubleshooting: go to step 35.
     
NO
     
     
     
Left rear door lock knob switch circuit troubleshooting: go to step 41.
     
NO
     
     
     
Right rear door lock knob switch circuit troubleshooting: go to step 47.
23.
Keyless/power door locks/security system check 1:

Keyless/power door locks/security system check 1
?1.
With the transmission range switch in P position, check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
A/T Gear Position Switch (P)
    

Is information indicator ON?

     
YES
     
     
     
Go to step 24.
     
NO
     
     
     
Go to step 26.
24.
Determine possible failure area (transmission range switch, others):

Determine possible failure area (transmission range switch, others)
?1.
Disconnect the following connector.
Transmission range switch 10P connector

?2.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
A/T Gear Position Switch (P)
    

Is information indicator OFF?

     
YES
     
     
     
     
NO
     
     
     
Go to step 25.
25.
Shorted wire check (ATP-P line):

Shorted wire check (ATP-P line)
?1.
Disconnect the following connector.
Under-dash fuse/relay box connector Q (40P)

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector Q (40P): disconnected
Transmission range switch 10P connector: disconnected
Test point 1
Under-dash fuse/relay box connector Q (40P) No. 22
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
Repair a short to ground in the wire.?
     
NO
     
     
     
The ATP-P wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?
26.
Keyless/power door locks/security system check 2:

Keyless/power door locks/security system check 2
?1.
Disconnect the following connector.
Transmission range switch 10P connector

?2.
Connect terminals A and B with a jumper wire.
Terminal A
Transmission range switch 10P connector No. 4
Terminal B
Body ground


?3.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
A/T Gear Position Switch (P)
    

Is information indicator ON?

     
YES
     
     
     
Go to step 27.
     
NO
     
     
     
Go to step 28.
27.
Open wire check (GND line):

Open wire check (GND line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Transmission range switch 10P connector: disconnected
Test point 1
Transmission range switch 10P connector No. 5
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
     
NO
     
     
     
Repair an open or high resistance in the ground wire or poor ground (G101).?
28.
Open wire check (ATP-P line):

Open wire check (ATP-P line)
?1.
Connect terminals A and B with a jumper wire.
Terminal A
Under-dash fuse/relay box connector Q (40P) No. 22
Terminal B
Body ground

?2.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
A/T Gear Position Switch (P)
    

Is information indicator ON?

     
YES
     
     
     
Repair an open or high resistance in the wire.?
     
NO
     
     
     
The ATP-P wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?
29.
Keyless/power door locks/security system check 1:

Keyless/power door locks/security system check 1
?1.
With the driver's door lock knob switch in LOCK position, check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Driver's Door Lock Knob Switch (UNLOCK)
    

Is information indicator ON?

     
YES
     
     
     
Go to step 30.
     
NO
     
     
     
Go to step 32.
30.
Determine possible failure area (driver's door latch, others):

Determine possible failure area (driver's door latch, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Driver's door latch 10P connector

?3.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Driver's Door Lock Knob Switch (UNLOCK)
    

Is information indicator OFF?

     
YES
     
     
     
Faulty driver's door lock knob switch; replace the driver's door latch.?
     
NO
     
     
     
Go to step 31.
31.
Shorted wire check (DR SILCON UNLOCK line):

Shorted wire check (DR SILCON UNLOCK line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Under-dash fuse/relay box connector D (24P)

?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
Driver's door latch 10P connector: disconnected
Test point 1
Under-dash fuse/relay box connector D (24P) No. 15
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
Repair a short to ground in the wire.?
     
NO
     
     
     
The DR SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?
32.
Keyless/power door locks/security system check 2:

Keyless/power door locks/security system check 2
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Driver's door latch 10P connector

?3.
Connect terminals A and B with a jumper wire.
Terminal A
Driver's door latch 10P connector No. 5
Terminal B
Body ground


?4.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Driver's Door Lock Knob Switch (UNLOCK)
    

Is information indicator ON?

     
YES
     
     
     
Go to step 33.
     
NO
     
     
     
Go to step 34.
33.
Open wire check (GND line):

Open wire check (GND line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Driver's door latch 10P connector: disconnected
Test point 1
Driver's door latch 10P connector No. 7
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
The GND wire is OK. Faulty driver's door lock knob switch; replace the driver's door latch.?
     
NO
     
     
     
Repair an open or high resistance in the wire or poor ground (G401).?
34.
Open wire check (DR SILCON UNLOCK line):

Open wire check (DR SILCON UNLOCK line)
?1.
Connect terminals A and B with a jumper wire.
Terminal A
Under-dash fuse/relay box connector D (24P) No. 15
Terminal B
Body ground

?2.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Driver's Door Lock Knob Switch (UNLOCK)
    

Is information indicator ON?

     
YES
     
     
     
Repair an open or high resistance in the wire.?
     
NO
     
     
     
The DR SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?
35.
Keyless/power door locks/security system check 1:

Keyless/power door locks/security system check 1
?1.
With the front passenger's door lock knob switch in LOCK position, check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Passenger's Door Lock Knob Switch (UNLOCK)
    

Is information indicator ON?

     
YES
     
     
     
Go to step 36.
     
NO
     
     
     
Go to step 38.
36.
Determine possible failure area (front passenger's door latch, others):

Determine possible failure area (front passenger's door latch, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Front passenger's door latch 10P connector

?3.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Passenger's Door Lock Knob Switch (UNLOCK)
    

Is information indicator OFF?

     
YES
     
     
     
Faulty front passenger's door lock knob switch; replace the front passenger's door latch.?
     
NO
     
     
     
Go to step 37.
37.
Shorted wire check (AS SILCON UNLOCK line):

Shorted wire check (AS SILCON UNLOCK line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Under-dash fuse/relay box connector A (16P)

?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector A (16P): disconnected
Front passenger's door latch 10P connector: disconnected
Test point 1
Under-dash fuse/relay box connector A (16P) No. 4
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
Repair a short to ground in the wire.?
     
NO
     
     
     
The AS SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?
38.
Keyless/power door locks/security system check 2:

Keyless/power door locks/security system check 2
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Front passenger's door latch 10P connector

?3.
Connect terminals A and B with a jumper wire.
Terminal A
Front passenger's door latch 10P connector No. 10
Terminal B
Body ground


?4.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Passenger's Door Lock Knob Switch (UNLOCK)
    

Is information indicator ON?

     
YES
     
     
     
Go to step 39.
     
NO
     
     
     
Go to step 40.
39.
Open wire check (GND line):

Open wire check (GND line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Front passenger's door latch 10P connector: disconnected
Test point 1
Front passenger's door latch 10P connector No. 8
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
The GND wire is OK. Faulty front passenger's door lock knob switch; replace the front passenger's door latch.?
     
NO
     
     
     
Repair an open or high resistance in the ground wire or poor ground (G403).?
40.
Open wire check (AS SILCON UNLOCK line):

Open wire check (AS SILCON UNLOCK line)
?1.
Connect terminals A and B with a jumper wire.
Terminal A
Under-dash fuse/relay box connector A (16P) No. 4
Terminal B
Body ground

?2.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Passenger's Door Lock Knob Switch (UNLOCK)
    

Is information indicator ON?

     
YES
     
     
     
Repair an open or high resistance in the wire.?
     
NO
     
     
     
The AS SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?
41.
Keyless/power door locks/security system check 1:

Keyless/power door locks/security system check 1
?1.
With the left rear door lock knob switch in LOCK position, check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Driver's Rear Door Lock Knob Switch (UNLOCK)
    

Is information indicator ON?

     
YES
     
     
     
Go to step 42.
     
NO
     
     
     
Go to step 44.
42.
Determine possible failure area (left rear door latch, others):

Determine possible failure area (left rear door latch, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Left rear door latch 10P connector

?3.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Driver's Rear Door Lock Knob Switch (UNLOCK)
    

Is information indicator OFF?

     
YES
     
     
     
Faulty left rear door lock knob switch; replace the left rear door latch.?
     
NO
     
     
     
Go to step 43.
43.
Shorted wire check (RR L SILCON UNLOCK line):

Shorted wire check (RR L SILCON UNLOCK line)
?1.
Disconnect the following connector.
Under-dash fuse/relay box connector N (52P)

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector N (52P): disconnected
Left rear door latch 10P connector: disconnected
Test point 1
Under-dash fuse/relay box connector N (52P) No. 27
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
Repair a short to ground in the wire.?
     
NO
     
     
     
The RR L SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?
44.
Keyless/power door locks/security system check 2:

Keyless/power door locks/security system check 2
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Left rear door latch 10P connector

?3.
Connect terminals A and B with a jumper wire.
Terminal A
Left rear door latch 10P connector No. 9
Terminal B
Body ground


?4.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Driver's Rear Door Lock Knob Switch (UNLOCK)
    

Is information indicator ON?

     
YES
     
     
     
Go to step 45.
     
NO
     
     
     
Go to step 46.
45.
Open wire check (GND line):

Open wire check (GND line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Left rear door latch 10P connector: disconnected
Test point 1
Left rear door latch 10P connector No. 6
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
The GND wire is OK. Faulty left rear door lock knob switch; replace the left rear door latch.?
     
NO
     
     
     
Repair an open or high resistance in the ground wire or poor ground (G601).?
46.
Open wire check (RR L SILCON UNLOCK line):

Open wire check (RR L SILCON UNLOCK line)
?1.
Connect terminals A and B with a jumper wire.
Terminal A
Under-dash fuse/relay box connector N (52P) No. 27
Terminal B
Body ground

?2.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Driver's Rear Door Lock Knob Switch (UNLOCK)
    

Is information indicator ON?

     
YES
     
     
     
Repair an open or high resistance in the wire.?
     
NO
     
     
     
The RR L SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?
47.
Keyless/power door locks/security system check 1:

Keyless/power door locks/security system check 1
?1.
With the right rear door lock knob switch in LOCK position, check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Passenger's Rear Door Lock Knob Sw. (UNLOCK)
    

Is information indicator ON?

     
YES
     
     
     
Go to step 48.
     
NO
     
     
     
Go to step 50.
48.
Determine possible failure area (right rear door latch, others):

Determine possible failure area (right rear door latch, others)
?1.
Disconnect the following connector.
Right rear door latch 10P connector

?2.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Passenger's Rear Door Lock Knob Sw. (UNLOCK)
    

Is information indicator OFF?

     
YES
     
     
     
Faulty right rear door lock knob switch; replace the right rear door latch.?
     
NO
     
     
     
Go to step 49.
49.
Shorted wire check (RR R SILCON UNLOCK line):

Shorted wire check (RR R SILCON UNLOCK line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Under-dash fuse/relay box connector N (52P)

?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Under-dash fuse/relay box connector N (52P): disconnected
Right rear door latch 10P connector: disconnected
Test point 1
Under-dash fuse/relay box connector N (52P) No. 52
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
Repair a short to ground in the wire.?
     
NO
     
     
     
The RR R SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?
50.
Keyless/power door locks/security system check 2:

Keyless/power door locks/security system check 2
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Right rear door latch 10P connector

?3.
Connect terminals A and B with a jumper wire.
Terminal A
Right rear door latch 10P connector No. 6
Terminal B
Body ground


?4.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Passenger's Rear Door Lock Knob Sw. (UNLOCK)
    

Is information indicator ON?

     
YES
     
     
     
Go to step 51.
     
NO
     
     
     
Go to step 52.
51.
Open wire check (GND line):

Open wire check (GND line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Right rear door latch 10P connector: disconnected
Test point 1
Right rear door latch 10P connector No. 9
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
The GND wire is OK. Faulty right rear door lock knob switch; replace the right rear door latch.?
     
NO
     
     
     
Repair an open or high resistance in the ground wire or poor ground (G502).?
52.
Open wire check (RR R SILCON UNLOCK line):

Open wire check (RR R SILCON UNLOCK line)
?1.
Connect terminals A and B with a jumper wire.
Terminal A
Under-dash fuse/relay box connector N (52P) No. 52
Terminal B
Body ground

?2.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Passenger's Rear Door Lock Knob Sw. (UNLOCK)
    

Is information indicator ON?

     
YES
     
     
     
Repair an open or high resistance in the wire.?
     
NO
     
     
     
The RR R SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box.?