Keyless/Power Door Locks/Security System (Body Control Module, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test
Make sure the fuses associated with the system is OK.
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.
Before testing, make sure the headlights, parking lights, side marker lights, taillights, and horns work properly.

Body Control Module

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

2.
Disconnect body control module connectors.
Body Control Module Connector A (14P) (female terminals):
Body Control Module Connector B (36P) (female terminals):
Body Control Module Connector C (28P) (female terminals):
Body Control Module Connector D (40P) (female terminals):
Body Control Module Connector E (24P) (female terminals):
3.
Inspect the connectors and socket terminals to be sure they are all making good contact:
If the terminals are bent, loose, or corroded, repair them as necessary, and recheck the system.
If the terminals look OK, go to step 4.

4.
With the connectors still disconnected, do the following input tests:
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, go to step 5.

NOTE: These are door lock actuator operation tests for keyless entry.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result is not obtained
D26*
PNK
Ignition key inserted into the ignition key switch
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty ignition key switch
An open or high resistance in the wire
Poor ground (G401)
Ignition key removed from the ignition key switch
Measure the voltage to ground:
There should be battery voltage.
Faulty ignition key switch
A short to ground in the wire
*: Without keyless access system

5.
Reconnect the connectors to the body control module, do the following input tests:
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, go to step 6.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result is not obtained
C27
WHT
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
An open or high resistance in the wire
E1
BLU
Vehicle ON mode
Measure the voltage to ground:
There should be battery voltage.
An open or high resistance in the wire
A2
BLK
In all power modes
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G401)
An open or high resistance in the ground wire
A8
BLK
In all power modes
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G401)
An open or high resistance in the ground wire
B27
BLU
In all power modes
Connect to ground with a jumper wire:
The driver's door lock actuator, the front passenger's door lock actuator, the left rear door lock actuator, and the right rear door lock actuator should LOCK.
Faulty power door lock relay circuit (LOCK)
Faulty driver's door lock actuator
Faulty front passenger's door lock actuator
Faulty left rear door lock actuator
Faulty right rear door lock actuator
An open or high resistance in the wire
B31
GRN
In all power modes
Connect to ground with a jumper wire:
The driver's door lock actuator should UNLOCK.
Faulty power door lock relay circuit (DR UNLOCK)
Faulty driver's door lock actuator
An open or high resistance in the wire
B32
PNK
In all power modes
Connect to ground with a jumper wire:
The front passenger's door lock actuator, the left rear door lock actuator, and the right rear door lock actuator should UNLOCK.
Faulty power door lock relay circuit (UNLOCK)
Faulty front passenger's door lock actuator
Faulty left rear door lock actuator
Faulty right rear door lock actuator
An open or high resistance in the wire
B29
LT BLU
In all power modes
Connect to ground with a jumper wire:
The tailgate release actuator should work.
Faulty tailgate release actuator relay circuit
Faulty tailgate release actuator
Poor ground (G505) or an open in the ground wire
An open or high resistance in the wire
D22
GRN
Driver's door open
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty driver's door switch
Faulty driver's door switch ground
An open or high resistance in the wire
Driver's door closed
Measure the voltage to ground:
There should be battery voltage.
Faulty driver's door switch
A short to ground in the wire
D23
LT GRN
Front passenger's door open
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty front passenger's door switch
Faulty front passenger's door switch ground
An open or high resistance in the wire
Front passenger's door closed
Measure the voltage to ground:
There should be battery voltage.
Faulty front passenger's door switch
A short to ground in the wire
D24
BRN
Left rear door open
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty left rear door switch
Faulty left rear door switch ground
An open or high resistance in the wire
Left rear door closed
Measure the voltage to ground:
There should be battery voltage.
Faulty left rear door switch
A short to ground in the wire
D28
GRY
Right rear door open
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty right rear door switch
Faulty right rear door switch ground
An open or high resistance in the wire
Right rear door closed
Measure the voltage to ground:
There should be battery voltage.
Faulty right rear door switch
A short to ground in the wire
C15
BRN
Left rear door lock knob switch in UNLOCK
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty left rear door lock knob switch
Poor ground (G501) or an open in the ground wire
An open or high resistance in the wire
Left rear door lock knob switch in LOCK
Measure the voltage to ground:
There should be battery voltage.
Faulty left rear door lock knob switch
A short to ground in the wire
C16
GRY
Right rear door lock knob switch in UNLOCK
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty right rear door lock knob switch
Poor ground (G502) or an open in the ground wire
An open or high resistance in the wire
Right rear door lock knob switch in LOCK
Measure the voltage to ground:
There should be battery voltage.
Faulty right rear door lock knob switch
A short to ground in the wire
D27
WHT
Tailgate open
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty power tailgate closer unit or faulty tailgate latch switch
Poor ground (G505) or an open in the ground wire
An open or high resistance in the wire
Tailgate closed
Measure the voltage to ground:
There should be battery voltage.
Faulty power tailgate closer unit or faulty tailgate latch switch
A short to ground in the wire
C1
GRN
Shift lever in P position/mode
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty transmission range switch
An open or high resistance in the wire
Shift lever in any other position/mode than P
Measure the voltage to ground:
There should be battery voltage.
Faulty transmission range switch
A short to ground in the wire
Door Multiplex Control Unit

6.
Turn the vehicle to the OFF (LOCK) mode.

7.
Disconnect the power window master switch 37P connector.
Power Window Master Switch 37P Connector (female terminals)
8.
Inspect the connector and socket terminals to be sure they are all making good contact:
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, go to step 9.

9.
With the connector still disconnected, do the following input tests:
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, go to step 10.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result is not obtained
36
BLU
Disconnect these connectors:
Front passenger's power window switch 37P connector
Panoramic glass roof motor-control unit 14P connector*1
Moonroof motor-control unit 14P connector*2
Check for continuity between terminal No. 36 and front passenger's power window switch 37P connector terminal No. 34:
There should be continuity.
An open in the LIN(P/W) wire
Check for continuity between terminal No. 36 and panoramic glass roof motor-control unit 14P connector terminal No. 12:
There should be continuity.
An open in the LIN(P/W) wire
Check for continuity between terminal No. 36 and moonroof motor-control unit 14P connector terminal No. 12:
There should be continuity.
An open in the LIN(P/W) wire
Check for continuity to ground:
There should be no continuity.
A short to ground in the LIN(P/W) wire
*1: With panoramic glass roof
*2: With moonroof

10.
Reconnect the connector, do the following input tests:
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, go to step 11.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result is not obtained
18
LT GRN
Vehicle ON mode
Measure the voltage to ground:
There should be battery voltage.
An open or high resistance in the wire
37
RED
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
An open or high resistance in the wire
4
WHT
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
An open or high resistance in the wire
3
BLK
In all power modes
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G401)
An open or high resistance in the ground wire
29
BLK
In all power modes
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G401)
An open or high resistance in the ground wire
7
PUR
Driver's door key cylinder switch in LOCK
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty driver's door key cylinder switch
Poor ground (G401) or an open in the ground wire
An open or high resistance in the wire
Driver's door key cylinder switch in neutral or UNLOCK
Measure the voltage to ground:
There should be battery voltage.
Faulty driver's door key cylinder switch
A short to ground in the wire
8
RED
Driver's door key cylinder switch in UNLOCK
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty driver's door key cylinder switch
Poor ground (G401) or an open in the ground wire
An open or high resistance in the wire
Driver's door key cylinder switch in neutral or LOCK
Measure the voltage to ground:
There should be battery voltage.
Faulty driver's door key cylinder switch
An open or high resistance in the wire
21
BLU
Driver's door lock knob switch in LOCK
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty driver's door lock knob switch
Poor ground (G401) or an open in the ground wire
An open or high resistance in the wire
Driver's door lock knob switch in UNLOCK
Measure the voltage to ground:
There should be battery voltage.
Faulty driver's door lock knob switch
A short to ground in the wire
20
LT BLU
Driver's door lock knob switch in UNLOCK
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty driver's door lock knob switch
Poor ground (G401) or an open in the ground wire
An open or high resistance in the wire
Driver's door lock knob switch in LOCK
Measure the voltage to ground:
There should be battery voltage.
Faulty driver's door lock knob switch
A short to ground in the wire
Front Passenger's Power Window Switch

11.
Turn the vehicle to the OFF (LOCK) mode, open and close the driver's door.

12.
Disconnect the front passenger's power window switch 37P connector.
Front Passenger's Power Window Switch 37P Connector (female terminals)
13.
Inspect the connector and socket terminals to be sure they are all making good contact:
If the terminals are bent, loose, or corroded, repair them as necessary, and recheck the system.
If the terminals look OK, go to step 14.

14.
With the connector still disconnected, do the following input tests:
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, go to step 15.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result is not obtained
34
LT BLU
Disconnect these connectors:
Power window master switch 37P connector
Panoramic glass roof motor-control unit 14P connector*1
Moonroof motor-control unit 14P connector*2
Check for continuity between terminal No. 34 and power window master switch 37P connector terminal No. 36:
There should be continuity.
An open in the LIN(P/W) wire
Check for continuity between terminal No. 34 and panoramic glass roof motor-control unit 14P connector terminal No. 12:
There should be continuity.
An open in the LIN(P/W) wire
Check for continuity between terminal No. 34 and moonroof motor-control unit 14P connector terminal No. 12:
There should be continuity.
An open in the LIN(P/W) wire
Check for continuity to ground:
There should be no continuity.
A short to ground in the LIN(P/W) wire
*1: With panoramic glass roof
*2: With moonroof

15.
Reconnect the connector, do the following input tests:
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, go to step 16.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result is not obtained
1
GRN
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
An open or high resistance in the wire
3
BLK
In all power modes
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G401)
An open or high resistance in the ground wire
36
YEL
Front passenger's door lock knob switch in UNLOCK
Measure the voltage to ground:
There should be less than 0.2 V.
Front passenger's door lock knob switch
Poor ground (G401) or an open in the ground wire
An open or high resistance in the wire
Front passenger's door lock knob switch in LOCK
Measure the voltage to ground:
There should be battery voltage.
Front passenger's door lock knob switch
A short to ground in the wire

16.
If multiple failures are found on more than one control unit, replace the body control module. If input failures are related to a particular control unit, replace the control unit.