Rear Wiper Relay
#1
08-07-2018, 05:14 PM
#2
08-07-2018, 09:06 PM
Camel Trophy
I’d start at the switch on the dash to make sure you have a secure electrical connection. Or swap the switch with another switch from the dash to verify if it is or isn’t a bad switch. Check the pivot point on the rear motor to make sure the wiper arm is tight and not loose. Have someone move the rear wiper arm when you press the switch. Sometimes that helps unjam the sticking motor.
For the relay, check the auxiliary circuits relay, R7 under the bonnet. Fuse 18 in the cab is the rear wiper motor fuse.
For the relay, check the auxiliary circuits relay, R7 under the bonnet. Fuse 18 in the cab is the rear wiper motor fuse.
Last edited by JUKE179r; 08-07-2018 at 09:15 PM.
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Fast951 (08-08-2018)
#3
08-08-2018, 09:38 AM
Thanks. All the mechanical bits are sorted and the motor has power so I'll try swapping R7 to see if that makes a difference. I'm thinking the BCM may have some role in this mystery. Seems the rear wiper relay does not stay energized long enough to allow the complete back-and-forth motion of the wiper arm. Possible it could be the motor, and I have a spare so I might try replacing that if R7 is not the culprit.
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