Windshield Wiper Control Unit/Motor Input Test
NOTE: Make sure the fuses associated with the system is OK.

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

2.
Disconnect the windshield wiper control unit/motor 6P connector.
Windshield Wiper Control Unit/Motor 6P Connector (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
3
PUR
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
PNK
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

5.
Reconnect the windshield wiper control unit/motor 6P connector, 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 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.
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 (G351)
An open or high resistance in the ground wire