Wipers/Washers (Body Control Module) Input Test
NOTE:
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.

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 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
PUR
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
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

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
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
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
C25
GRN
Brake pedal pressed
Measure the voltage to ground:
There should be battery voltage.
Faulty brake pedal position switch
An open or high resistance in the wire
D2
•
D9
PUR
•
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*
•
D9
BLU
•
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
D6
•
D9
LT BLU
•
BRN
Rear window wiper/washer switch (INT) 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
Rear window wiper/washer switch (INT) OFF
Measure the voltage to ground:
There should be about battery voltage.
Faulty windshield wiper/washer switch
A short to ground in the wire
D7
•
D9
PNK
•
BRN
Rear window wiper/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
Rear window wiper/washer switch OFF
Measure the voltage to ground:
There should be about battery voltage.
Faulty windshield wiper/washer switch
A short to ground in the wire
D8
•
D9
BLU
•
BRN
Rear window 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
Rear window washer switch OFF
Measure the voltage to ground:
There should be about battery voltage.
Faulty windshield wiper/washer switch
A short to ground in the wire
*: With intermittent dwell time controller