Question about 2004 Pontiac Grand Prix
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jun 06, 2017 | Ford F-250 Cars & Trucks
Feb 11, 2017 | GMC Cars & Trucks
Dec 10, 2016 | 2006 Hummer H3
Mar 20, 2016 | Ford Cars & Trucks
Body control module (BCM)
Wiper PCB relay
Wiper high PCB relay
Windshield wiper motor
Windshield washer fluid pump
Windshield washer fluid level switch
WPR fuse 25 A
WSW fuse 10 A
Low Speed Operation
When the wiper switch is in the low speed position, ground is applied through the switch internal resistor and the wiper switch low signal circuit to the body control module (BCM). In response to this signal, the BCM energizes the WIPER PCB relay by applying battery voltage through the wiper relay control circuit to the coil side of the relay. This allows battery positive voltage from the WPR fuse to flow through the switch input side of the WIPER PCB relay and out to the switch input side of the WIPER HIGH PCB relay. Since the wiper high relay is de-energized and its switch contacts are normally closed to the low speed control circuit of the windshield wiper motor, the motor will operate at low speed.
High Speed Operation When the wiper switch is in the high speed position, ground is applied through the windshield wiper switch high signal circuit to the body control module (BCM) indicating the wiper high speed request. In response to this signal, the BCM then energizes the wiper PCB relay, as stated above, and the wiper high PCB relay by applying ground through the control circuit to the coil side of the relay. With the wiper high relay energized and its switch contacts closed to the high speed control circuit of the wiper motor, the motor will operate at high speed.
Wiper motor high speed operation and the wiper high speed PCB relay can also be commanded ON/OFF by using a scan tool. Refer to Control Module References.
DTC B3715 02: Front Wiper Relay Drive Circuit Short to Ground
DTC B3875 00: Wiper High Speed Relay Circuit
DTC B3922 00: Front Wiper Function Select Circuit
You could Have a switch problem , BCM problem ,PCB relay problem , the pcb relays are non serviceable an the whole under hood fuse box would need to be replaced . Malfunctioning motor bad ground some where etc.....
Dec 20, 2015 | 2008 Chevrolet Impala
Apr 01, 2015 | Cars & Trucks
Oct 08, 2012 | 2010 Dodge Ram Pickup 1500
Nov 05, 2011 | 2006 Chrysler PT Cruiser
Feb 15, 2010 | 1997 Ford F150 Regular Cab
Sep 02, 2009 | 2006 Fiat 124
72 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: