Exterior Lights (Body Control Module) 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. A2-6, No. A13*1, No. A17, No. A18, No. A20*2, No. A22, No. A25*1, No. A26, No. A27*2, No. A28*1, No. A29, and No. A30*2 fuses are OK.
Before testing, make sure the No. B8 and No. B11*1 fuses are OK.
*1: Except L15BY engine
*2: L15BY engine

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

2.
NOTE: All connector views are shown from the wire side of the female terminals.
3.
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 are 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.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result
is not obtained
B11
PNK
Under all conditions
Connect terminal to ground with a jumper wire:
The left daytime running light should come on.
Blown No. A17 fuse
Faulty daytime running light relay
Faulty LED
Poor ground (G301) or an open in the ground wire
An open or high resistance in the wire
Connect terminal to ground with a jumper wire:
The right daytime running light should come on.
Blown No. A17 fuse
Faulty daytime running light relay
Faulty LED
Poor ground (G302) or an open in the ground wire
An open or high resistance in the wire
B25
LT GRN
Under all conditions
Connect terminal to ground with a jumper wire:
The left front parking light should come on.
Blown No. A13*5 fuse
Blown No. A20*6 fuse
Faulty taillight relay
Faulty LED
Poor ground (G301) or an open in the ground wire
An open or high resistance in the wire
Connect terminal to ground with a jumper wire:
The right front parking light should come on.
Blown No. A13*5 fuse
Blown No. A20*6 fuse
Faulty taillight relay
Faulty LED
Poor ground (G302) or an open in the ground wire
An open or high resistance in the wire
Connect terminal to ground with a jumper wire:
The left front side marker light should come on.
Blown No. A13*5 fuse
Blown No. A20*6 fuse
Faulty taillight relay
Blown bulb
Poor ground (G305*5, G301*6) or an open in the ground wire
An open or high resistance in the wire
Connect terminal to ground with a jumper wire:
The right front side marker light should come on.
Blown No. A13*5 fuse
Blown No. A20*6 fuse
Faulty taillight relay
Blown bulb
Poor ground (G305*5, G302*6) or an open in the ground wire
An open or high resistance in the wire
Connect terminal to ground with a jumper wire:
The taillights, the rear side marker lights*1, the inner taillights, and the license plate light should come on.
Blown No. A13*5 fuse
Blown No. A20*6 fuse
Faulty taillight relay
Faulty LED
Poor ground (G701) or an open in the ground wire
An open or high resistance in the wire
B24
BRN
Under all conditions
Connect terminal to ground with a jumper wire:
The left headlight (low beam) should come on.
Blown No. A25*5 fuse
Blown No. A26*6 fuse
Faulty headlight low beam relay
Blown bulb*2
Faulty LED*3
Poor ground (G301) or an open in the ground wire
An open or high resistance in the wire
Connect terminal to ground with a jumper wire:
The right headlight (low beam) should come on.
Blown No. A26*5 fuse
Blown No. A27*6 fuse
Faulty headlight low beam relay
Blown bulb*2
Faulty LED*3
Poor ground (G302) or an open in the ground wire
An open or high resistance in the wire
A9
•
A10
BLU
•
GRN
Under all conditions
Connect terminal A9 and A10 with a jumper wire:
The left headlight (high beam) should come on.
Blown No. A28*5 fuse
Blown No. A29*6 fuse
Blown bulb*2
Faulty LED*3
Poor ground (G301) or an open in the ground wire
An open or high resistance in the wire
A14
•
A12
PNK
•
WHT
Under all conditions
Connect terminal A14 and A12 with a jumper wire:
The right headlight (high beam) should come on.
Blown No. A29*5 fuse
Blown No. A30*6 fuse
Blown bulb*2
Faulty LED*3
Poor ground (G302) or an open in the ground wire
An open or high resistance in the wire
B15*4
PUR
Under all conditions
Connect terminal to ground with a jumper wire:
The left fog light should come on.
Blown No. A22 fuse
Faulty fog light relay
Blown bulb
Poor ground (G301) or an open in the ground wire
An open or high resistance in the wire
Connect terminal to ground with a jumper wire:
The right fog light should come on.
Blown No. A22 fuse
Faulty fog light relay
Blown bulb
Poor ground (G302) or an open in the ground wire
An open or high resistance in the wire
*1: 2-door
*2: Without LED headlight
*3: With LED headlight
*4: With fog light
*5: Except L15BY engine
*6: L15BY engine

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, replace the body control module.

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
E1
PUR*3
BLU*4
Vehicle ON mode
Measure the voltage to ground:
There should be battery voltage.
Blown No. B8 fuse
Blown No. B11*3 fuse
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 (G501)
An open or high resistance in the wire
A8
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
D26*1
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
C10
•
C3
PNK
•
BLK
Combination light switch OFF
Measure the voltage between terminals C10 and C3:
There should be less than 0.2 V.
Faulty combination light switch
An open or high resistance in the wire
Combination light switch in any position other than OFF
Measure the voltage between terminals C10 and C3:
There should be battery voltage.
Faulty combination light switch
A short to ground in the wire
C11
•
C3
GRY
•
BLK
Combination light switch (PARKING position) ON
Measure the voltage between terminals C11 and C3:
There should be less than 0.2 V.
Faulty combination light switch
An open or high resistance in the wire
Combination light switch OFF
Measure the voltage between terminals C11 and C3:
There should be battery voltage.
Faulty combination light switch
A short to ground in the wire
C9
•
C3
YEL
•
BLK
Combination light switch (headlight) ON
Measure the voltage between terminals C9 and C3:
There should be less than 0.2 V.
Faulty combination light switch
An open or high resistance in the wire
Combination light switch OFF
Measure the voltage between terminals C9 and C3:
There should be battery voltage.
Faulty combination light switch
A short to ground in the wire
C7
•
C3
GRN
•
BLK
Combination light switch lever pulled (Passing)
Measure the voltage between terminals C7 and C3:
There should be less than 0.2 V.
Faulty combination light switch
An open or high resistance in the wire
Combination light switch lever released (OFF)
Measure the voltage between terminals C7 and C3:
There should be battery voltage.
Faulty combination light switch
A short to ground in the wire
C8
•
C3
LT BLU
•
BLK
Combination light switch (Dimmer) in high beam position
Measure the voltage between terminals C8 and C3:
There should be less than 0.2 V.
Faulty combination light switch
An open or high resistance in the wire
Combination light switch (Dimmer) in low beam position
Measure the voltage between terminals C8 and C3:
There should be battery voltage.
Faulty combination light switch
A short to ground in the wire
C6*2
•
C3
PUR
•
BLK
Fog light switch ON
Measure the voltage between terminals C6 and C3:
There should be less than 0.2 V.
Faulty combination light switch
An open or high resistance in the wire
Fog light switch OFF
Measure the voltage between terminals C6 and C3:
There should be battery voltage.
Faulty combination light switch
A short to ground in the wire
*1: Without keyless access system
*2: With fog light
*3: Except L15BY engine
*4: L15BY engine