C6 Windshield wiper problems
Thread Starter
1st Gear
Joined: Feb 2010
Posts: 1
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C6 Windshield wiper problems
I have a 2009 Z51 that recently developed windshield wiper issues. At first they would come on and then quit until the engine was shut off and started again. They now will not work at all. I have replaced 2 of the relays in the fuse compartment under the hood without success. What could be the problem?
Melting Slicks
Joined: Sep 2008
Posts: 2,360
Likes: 59
From: San Jose California
The power goes through several relays as you already know. Here is where it starts.
HTD SEAT/WPR RLY fuse "10A" (BCM) This allows power to activate K15. Ground for the relay is constant on G102 ground.
Wiper fuse 4 "30A" which is before the K15 contacts. (Under hood)
Then through to the wiper switch via WPR/Washer fuse "10A" (I/P fuse box)
If you put the wipers on at the highest speed it should activate the Hi/Low relay K41 (under hood) and the on/off relay K45 (under hood) via the wiper diode. Ground for the relays is constant through G202.
This will allow you to operate the wipers without the need of the BCM.
D.J.
HTD SEAT/WPR RLY fuse "10A" (BCM) This allows power to activate K15. Ground for the relay is constant on G102 ground.
Wiper fuse 4 "30A" which is before the K15 contacts. (Under hood)
Then through to the wiper switch via WPR/Washer fuse "10A" (I/P fuse box)
If you put the wipers on at the highest speed it should activate the Hi/Low relay K41 (under hood) and the on/off relay K45 (under hood) via the wiper diode. Ground for the relays is constant through G202.
This will allow you to operate the wipers without the need of the BCM.
D.J.
