Wipers/Washers (Body Control Module and Windshield Wiper 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. A2-5 and No. A6 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.
NOTE: All connector views are shown from the wire side of the 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 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
B10
WHT
Disconnect the windshield wiper control unit/motor 6P connector
Check for continuity between terminal B10 and windshield wiper control unit/motor 6P connector terminal No. 3:
There should be continuity
An open or high resistance in the wire
B12
BRN
Under all conditions
Connect to ground with a jumper wire:
The windshield washer motor should run.
Blown No. A6 fuse
Faulty windshield washer motor relay circuit
Faulty windshield washer motor
Poor ground (G302*2, G305*1) or an open in the ground wire
An open or high resistance in the wire
C13
YEL
Disconnect the windshield wiper control unit/motor 6P connector
Check for continuity between terminal C13 and windshield wiper control unit/motor 6P connector terminal No. 4:
There should be continuity.
An open or high resistance in the wire
*1: Except L15BY engine
*2: L15BY engine

5.
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, replace the body control module.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result
is not obtained
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 ground 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
C1*1
GRN
Shift lever in P position/mode
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty or improperly adjusted transmission range switch
Poor ground (G201) or an open in the ground wire
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 or improperly adjusted transmission range switch
A short to ground in the wire
C25
TAN*3
GRY*4
Brake pedal pressed
Measure the voltage to ground:
There should be battery voltage.
Blown No. A8*4 fuse
Blown No. A9*3 fuse
Faulty brake pedal position switch
An open or high resistance in the wire
D2
•
D9
BLU
•
BRN
Windshield wiper switch (INT or LO) ON
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty windshield wiper/washer switch
An open or high resistance in the wire
Windshield wiper switch OFF
Measure the voltage to ground:
There should be battery voltage.
Faulty windshield wiper/washer switch
A short to ground in the wire
D4
•
D9
GRN
•
BRN
Windshield wiper switch (MIST) ON
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty windshield wiper/washer switch
An open or high resistance in the wire
Windshield wiper switch OFF
Measure the voltage to ground:
There should be battery voltage.
Faulty windshield wiper/washer switch
A short to ground in the wire
D3
•
D9
WHT
•
BRN
Windshield wiper switch (LO or HI) ON
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty windshield wiper/washer switch
An open or high resistance in the wire
Windshield wiper switch OFF
Measure the voltage to ground:
There should be battery voltage.
Faulty windshield wiper/washer switch
A short to ground in the wire
D5
•
D9
YEL
•
BRN
Windshield washer switch ON
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty windshield wiper/washer switch
An open or high resistance in the wire
Windshield washer switch OFF
Measure the voltage to ground:
There should be battery voltage.
Faulty windshield wiper/washer switch
A short to ground in the wire
E21*2
•
D9
GRY
•
BRN
Windshield wiper switch (Intermittent dwell time controller) turned ON.
Measure the voltage between terminals E21 and D9:
The voltage should vary between 0 to 5 V.
Faulty windshield wiper/washer switch
An open or high resistance in the ground wire
A short to ground in the wire
*1: CVT
*2: With intermittent dwell time controller
*3: Except L15BY engine
*4: L15BY engine
Windshield Wiper Control Unit/Motor

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

7.
8.
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 are OK, go to step 9.

9.
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, Replace the windshield wiper control unit/motor.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result
is not obtained
2
BLU
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
Blown No. A2-5 fuse
An open or high resistance in the wire
1
BLK
Under all conditions
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G301*1, G302*2)
An open or high resistance in the ground wire
3
WHT
Disconnect body control module connector B (36P)
Check for continuity between terminal No. 3 and body control module connector B (36P) terminal No. 10:
There should be continuity.
An open or high resistance in the wire
4
YEL
Disconnect body control module connector C (28P)
Check for continuity between terminal No. 4 and body control module connector C (28P) terminal No. 13:
There should be continuity.
An open or high resistance in the wire
*1: Except L15BY engine
*2: L15BY engine

10.
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 windshield wiper control unit/motor.