Question about 1998 Cadillac Seville

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Rain sensor wipers willnot work or spray washer fluid. have high speed only

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  • John Stonik Sep 02, 2010

    How to tell a bad switch from a bad motor?
    I have beeb quoted a price of over $800.00 for a bad motor.

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  • Master
  • 11,896 Answers

Either the switch is bad or most likely the motor is bad. Even though it works on high, the motor can still be bad.

Posted on Sep 02, 2010

  • Nate Stansfield
    Nate Stansfield Sep 02, 2010

    You can test the switch with an ohmmeter. You can test power coming out of switch with a voltmeter. You can test power going to motor with a voltmeter. If there is power to motor and motor isn't working, then it has failed. If no power from switch to motor, then switch is bad.

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Looking for the fuse for the wiper motor 2008 chevy impala


WPR fuse 25amp under hood fuse box .
Wiper/Washer System Components
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
This is more then likely not a fuse issue !!!!!!!
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.
Wiper motor low speed operation and the wiper PCB relay can also be commanded ON/OFF by using a scan tool. Refer to Control Module References.
The PCB relays mentioned above are soldered right into the circuit board inside the fuse/relay block under the hood . There are alot of reasons for the wipers not to work ! The fuse could be blown but fuse's don't just blow for no good reason , short to ground , low resistance high current flow etc.... Intermittant !

Power and Grounds
With the ignition in the ON position, accessory voltage is supplied through the 25A WPR fuse to the WIPER PCB relay, the WIPER HIGH PCB relay and the WS WASH PCB relay that are all located in the underhood fuse block. Refer to Wiper/Washer Schematics.
G200 provides ground for the windshield wiper motor and the WIPER PCB relay. G100 provides ground for the windshield washer fluid pump and the windshield washer fluid level switch.

Dec 04, 2016 | Cars & Trucks

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

1 Answer

How do i get to the washer pump on a 1994 toyota camry?


I don't think any Camrys that year had rain sensing wipers so you could be right. Anyway to get at the pump you have to unscrew fixings and lift up the washer reservoir to disconnect the wiring, then remove the reservoir.

Jun 15, 2017 | 1994 Toyota Camry

1 Answer

Location of fuse in Intelligent Module


Fuse panel B contains fuses that supply power to washer functions. 25A fuses 34 and 33 and 30A fuse 32 supply power to the vehicle electrical system control module. 30A fuse 38 supplies power to the wiper motor control module. 5A fuse 19 supplies power to the rain/light recognition sensor. 30A fuse 36 supplies power to the headlight washer relay. 10A fuse 15 supplies power to the instrument cluster control module for washer fluid level sensing. 10A fuse 13 supplies power to the windshield wiper/washer switch in the steering column electronic systems control module. In addition, 5A fuse 20 supplies power to the washer nozzle heaters. Troubleshooting all this could lead to an answer.

Jan 28, 2014 | 2007 Audi A6

3 Answers

No fluid from wiper


Either the pipework is blocked or the wiper motor is faulty.

Remove hose at window washer under the hood (Just one only), then switch on and water should be seen/ If not you need to gain access to the washer bottle and test / remove the pump and probably replace.

Dec 21, 2009 | 2006 Volkswagen Jetta

1 Answer

The windshield wipers and washer fluid dispenser stay on


This must be due to a defective windshield-washer-switch. Repacement of it is the only way.

Sep 29, 2009 | 1996 Volvo 960

1 Answer

Wiper Speed changes from slow to fast then back to slow without moving switch!


the reason for your wiper speed change is due to the rain sensor which controls the speed of your wipers,determined by how much rain is comming down.the rain sensor is located behind your rear view mirror.

Sep 27, 2008 | 1997 Buick Park Avenue

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