Question about 1996 Plymouth Grand Voyager

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Thinking body control module needs to be replaced

It started out with the wipers working when they wanted to now the heater blower only works on high. It seems things are slowly dying off. I asked the dealer if they could reflash the BCM they said no, due to it was not flashable. So I went to the bone yard and got a used one, I asked the dealer if that would work , they said it probably would not start since the VIN # is imprinted on the BCM. Alst said would not stsrt. SO I didn't go thru the hassel of replacing it. do you know if replacing the BCM with a used one will work ?

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  • Plymouth Master
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First of all, all that's wrong with your blower is the resistor, $13.99 at autozone, 10-20 minutes to change it. Very common on these vans. Got to (autozone.com) and enter info on your vehicle then search for part name, (blower resistor) and a picture will come up, click on picture & it will expand for a good look at what your looking for under your hood, passenger side, on firewall. It pulls out, but disconnect your negative on your battery for safety sake. Can youo give us more info, or symptoms on wipers?

Posted on Feb 18, 2009

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Posted on Jan 02, 2017

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2004 ford freestar front blower motor will not come on. Windshield wipers only work occasionally


Pull the control switch out of the dash and check the switch connector for burnt connectors terminals, it will be be discolored, if you do find the switch burnt replace the switch and buy a repair connector from Ford. If the connector is ok then replace the blower motor resistor near the blower motor, it can cause this problem as well, in fact do that first, the blower resistor module is only about $18.00 (Source Rockauto.com). the wipers are controlled through the BCM (body control module), it can be tested with a scan tool. Below is a picture of the blower resistor module.
resistor-cvwiva3pd4w10j2ma2c0he5w-1-0.jpg

Apr 03, 2017 | 2004 Ford Freestar

1 Answer

WHERE IS THE WIPER/WASHER FUSE LOCATED ON 2007 PONTIAC TORRENT


In the under hood fuse box , should have diagram inside the lid . Front wiper's or rear ? Front fuse # 36 - 25 amp. Plus Two relay's PCB hi and Wiper PCB relay . Wouldn't think this being fuse problem . Wiper switch , motor etc... The wiper's are control by a computer . BCM - body control module .

The windshield wiper/washer system consists of front and rear wipers. The front and rear wipers are operative when the vehicle is in accessory or run. The front wipers have 4 different modes: Mist, Intermittent, Low, and High. When the front wipers are in the intermittent mode, there are 5 delay modes to chose from, commanded by the windshield wiper washer switch through the body control module (BCM). The rear wipers has an only one mode.

If the fuse is bad , could have a short to ground or wiper motor pulling to much current (amps) . Fuse's don't just blow for no reason ! Could also have DTC'S - diagnostic trouble codes stored in the BCM .
DTC B3715
DTC B3873
DTC B3875
DTC B3922

DTC B3715 02: Front Wiper Relay Drive Circuit Short to Ground
The body control module (BCM) controls the wiper motor based on input from the windshield wiper washer switch. The BCM monitors the wiper washer switch through three separate signal circuits and a ground circuit. The windshield wiper switch high signal circuit is used to determine high speed wiper operation, the windshield wiper switch low signal is used to determine low speed, intermittent, and mist operation through the use of a resistor ladder, and windshield washer switch signal circuit is used to determine washer operation.
The BCM controls the windshield wiper motor through two output controls, controlling two different PCB relays which control the desired wiper speed, high or low.
DTC B3922 00: Front Wiper Function Select Circuit

The PCB relay's are non- servicable , replace fuse box . Soldered in Your best bet mit be to take it to a qualified repair shop .

Feb 20, 2017 | Pontiac Cars & Trucks

1 Answer

Wipers, stereo and heater doesn't work


I just had a similar issue with my Colorado. It turned out to be the BCM(body control module). I don't think yours has one but the ECU might control the same systems. Check your fuses and if those are good look at your wiring diagram and what the common denominator is between those systems. My bet is it's the computer.

Dec 29, 2015 | 1994 Nissan Pickup

1 Answer

I'm driving in rain, wipers working good, all of a sudden they quit! I drive for 15 min, check again, they work for a while, then quit again...what in the problem?


If your not familiar with automotive electronics an module control of components , I suggest you take it to the dealer . They have the tools to diagnose this type problem !
The Wiper/Washer System consists of the following components:
?€¢
Windshield wiper/washer switch


?€¢
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

2 Answers

Heater blower and wipers dont work on my 2005 jeep wrangler


Have you checked fuses? Did both stop at the same time?

Dec 28, 2014 | Jeep Wrangler Cars & Trucks

1 Answer

2002 Grand Prix heater/lights, My heater randomly works and if the heater doesn't work either does my head lights. I'm thinking it's my ignition switch?


If you mean that the Daytime Running Lamps (DRL) does not work when the blower motor does not work, then YES it COULD be an ignition switch problem. However, not very likely (please read on). The regular HIGH and LOW beam headlamps do not require the ignition switch to operate.

The main circuit that runs your regular headlamps also runs the blower motor HIGH speed. This has nothing to do with the ignition switch.
This circuit also operates the Power Mirror circuits and the Hazzard Flashers. You may want to check to see if these are also malfunctioning when this happens.

The Circuits for your other blower speeds go through the ignition switch along with the DRL control module, but your HIGH speed does not. So if it is your ignition switch, your HIGH speed should still work and your regular headlamps should still work. You will lose only your lower blower speeds and DRL if it is an ignition switch problem. You will have a bunch of other stuff going out if it is an ignition switch also. The ignition switch circuit that runs your DRL module also runs your Powertrain Control Module. So if it is an ignition switch problem causing your DRL to shut down, your engine will also be shutting down.

Jan 08, 2012 | 2002 Pontiac Grand Prix

2 Answers

Windshield wipers won't operate except when the "wash" button is pushed. The switch has been tested, found good, but replaced anyway and it still doesn't work. The fuse and relay are OK. The wiper motor...


Yes it is called the body control module and is notorious for going bad, don't try to save any money buying it in a junkyard since these modules are PART number specific to each van. The dealer will have to flash it which means you will spend about 900 to 1000 to replace it including labor. But it's the only way to get it to work.

Current goes from the switch to the body control module THEN to the wipers which is why they are not working.

Mar 21, 2010 | 1996 Dodge Caravan

1 Answer

2005 Trailblazer EXT. Blower speed control not working...


Problem with blower motor is the blower motor resistor. They are usually located next to the blower motor, a couple of screws and a couple of plugs and your done. Autozone sells them for around $30 each. Wipers you may want to check for relays under the hood in the fuse block. There may be 2 relays 1 for low and 1 for high. I have switched relays from other working accesories and got wipers to work. Sometimes bad connection.

Mar 19, 2010 | 2002 Chevrolet TrailBlazer

2 Answers

Heater only work on high


Most likely is the resistor when they fault the default to high giving you off and high only

Dec 03, 2008 | 2003 Chevrolet Silverado 1500

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