Entry Lights Control System (Body Control Module and Door Multiplex Control Unit) Input Test (2/4-door)

Entry Lights Control System (Body Control Module and Door Multiplex Control Unit) Input Test

NOTE:

	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 No. A18 and No. A21 fuses are OK.
	Before testing, make sure the No. B8 and No. B11^* fuses are OK. *: Except L15BY engine

Body Control Module

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

2.	Disconnect body control module connectors A, C, D, and E. NOTE: All connector views are shown from the wire side of the female terminals.

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.

Reconnect the connectors to the body control module, and 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, then go to step 5.

Cavity

Wire

Test condition

Test: Desired result

Possible cause if desired result
is not obtained

C27

RED

Under all conditions

Measure the voltage to ground:
There should be battery voltage.

	Blown No. A18 fuse
	An open or high resistance in the wire

PUR^*6
BLU^*7

Vehicle ON mode

Measure the voltage to ground:
There should be battery voltage.

	Blown No. B8 fuse
	Blown No. B11^*6 fuse
	An open or high resistance in the wire

BLK

In all power modes

Measure the voltage to ground:
There should be less than 0.2 V.

	Poor ground (G501)
	An open or high resistance in the ground wire

BLK

In all power modes

Measure the voltage to ground:
There should be less than 0.2 V.

	Poor ground (G501)
	An open or high resistance in the ground 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^*1

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

D23^*2

LT GRN

Passenger's door open

Measure the voltage to ground:
There should be less than 0.2 V.

	Faulty passenger's door switch
	Faulty passenger's door switch ground
	An open or high resistance in the wire

Passenger's door closed

Measure the voltage to ground:
There should be battery voltage.

	Faulty passenger's door switch
	A short to ground in the wire

D24^*1

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^*1

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

A3^*3
•
A13^*3

LT GRN
•
PUR

Ceiling light switch in MIDDLE position

Connect terminal A3 to ground, and terminal A13 to ground with jumper wires:
The ceiling light should come on.

	Blown No. A21 fuse
	Blown bulb
	Faulty ceiling light
	Faulty interior lights cut relay
	An open or high resistance in the wire

A3^*4
•
A13^*4

LT GRN
•
PUR

Interior light switch in DOOR position and ceiling light switch in MIDDLE position

Connect terminal A3 to ground, and terminal A13 to ground with jumper wires:
The front individual map lights and the ceiling light should come on.

	Blown No. A21 fuse
	Blown bulb
	Faulty front individual map lights
	Faulty ceiling light
	Faulty interior light switch
	Faulty interior lights cut relay
	An open or high resistance in the wire

A3^*5
•
A5^*5

LT GRN
•
RED

In all power modes

Connect terminal A3 to ground, and terminal A5 to ground with jumper wires:
The ignition key light should come on.

	Blown No. A21 fuse
	Faulty LED
	Faulty interior lights cut relay
	An open or high resistance in the wire

D26^*5

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
	Poor ground (G503) or an open in the ground wire
	An open or high resistance in the wire

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

*1: 4-door
*2: 2-door
*3: Without moonroof
*4: With moonroof
*5: Without keyless access system
*6: Except L15BY engine
*7: L15BY engine

Door Multiplex Control Unit

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

6.	Disconnect the power window master switch 37P connector.

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 8.

Reconnect the connectors to the power window master switch; 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 9.

Cavity

Wire

Test condition

Test: Desired result

Possible cause if desired result
is not obtained

RED

Under all conditions

Measure the voltage to ground:
There should be battery voltage.

	Blown No. A18 fuse
	An open or high resistance in the wire

BRN

Vehicle ON mode

Measure the voltage to ground:
There should be battery voltage.

	Blown No. B9 fuse
	An open or high resistance in the wire

BLK

In all power modes

Measure the voltage to ground:
There should be less than 0.2 V.

	Poor ground (G502)
	An open or high resistance in the ground wire

BLK

In all power modes

Measure the voltage to ground:
There should be less than 0.2 V.

	Poor ground (G501)
	An open or high resistance in the ground wire

YEL

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 (G501) 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

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 (G501) 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

9.	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 power window master switch.