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No power to wiper fuse or wiper relay - Cars & Trucks

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Posted on Dec 28, 2016

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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

What fuse do i replace to make my windshield wipers work Chrysler 300


Highly doubt the fuse being the problem . If the fuse is blown ,that circuit has a problem , short to ground , wiper motor drawing to much amprage . Fuse's do not blow for no reason . Fuse # 18 -30 amp . under hood fuse box . There is also a relay , wiper on/off relay in same under hood fuse box . Also wiper hi/low relay ! There is also alot of electronics involved . integrated power module , front control module , plus C.A.N bus network . How to Diagnose Controller Area Network CAN . Could be wiper / washer switch , wiper motor , communication problem , module problems , Relay problem . Google chrysler intergrated power module . they have had a lot of problems with that thing .

Oct 12, 2015 | 2006 Chrysler 300

1 Answer

Does 2003 dodge durango have just one fuse & relay that operates both front & rear wiper motors


No there is not just one ,the rear has it's own fuse an relay . Fuse J - 20a in ( PDC ) power distribution center , relay should be in same box ! sorry don't have location number , can't find it !

Mar 16, 2015 | 2003 Dodge Durango

1 Answer

My windshield wipers stop working and I'm trying to find the fuse in a 2005 nissan morano


There are two fuses in the intelligent power distribution module located in the engine room: 15A FUSE 78 and 20A FUSE 73. Wiper failure also could be caused by the CPU, the front wiper relay, the front wiper high relay, or the front wiper motor.

Jan 27, 2015 | 2005 Nissan Murano

1 Answer

Rear wiper doesn't work


check rear wiper fuse and relay.if wiper motor getting power but do not work.rear wiper motor bad.if fuse and relay okay but no power going to rear wiper rear wiper switch could be bad.

May 14, 2013 | 2000 Seat Ibiza

1 Answer

2000 ford explorer, fuse box don't show me what fuses are for


There are two fuse boxes. A baqttery junction box under the hood on the drivers side and one inside on drivers side. Good luck.


Fuse/Relay

Location

Fuse Amp

Rating

Power Distribution Box

Description

1 60A** I/P Fuse Panel

2 40A** Blower Motor Relay

3 50A** 4 Wheel Anti-Lock Brake System

(4WABS) Module

4 30A** Power Windows, Power Moon

Roof, Power Seat

5 50A** Ignition Switch, Starter Relay

6 20A** Transfer Case Relay

7 - Not Used

8 20A** Air Suspension

9 40A** Air Suspension

10 30A** PCM Power Relay

1 10A* A/C Relay

2 30A* Heated Seats

3 30A* Heated Backlight

4 15A* Fog Lamps and Daytime Running

Lamps

5 4 3 2 1

10 9 8 7 6

12 11 10 9

8 7 6 5

4 3 2 1

15 14 13

2 1 1

9

6

10

8

7

5

4

1

3 2

175

MEGAFUSE

Roadside emergencies

197

Fuse/Relay

Location

Fuse Amp

Rating

Power Distribution Box

Description

5 - Not Used

6 10A* Powertrain Control Module

7 30A* 4 Wheel Anti-Lock System

(4WABS) Module

8 15A* Rear Wiper Motor

9 20A* Fuel Pump Relay and RAP

Module

10 15A* Horn Relay

11 15A* Parklamps Relay and Mainlight

Switch

12 30A* Mainlight Switch and

Multifunction Switch

13 15A* Heated Oxygen Sensor, EGR

Vacuum Regulator, EVR Solenoid,

Camshaft Position (CMP) Sensor,

Canister Vent Solenoid

14 30A* Generator/Voltage Regulator

15 - Not Used

1 - Wiper Park Relay

2 - A/C Relay

3 - Wiper High/Low Relay

4 - PCM Power Relay

5 - Fuel Pump Relay

6 - Starter Relay

7 - Horn Relay

8 - Rear Wipe Down Relay

9 - Blower Motor Relay

10 - Rear Wipe Up Relay

1 - Not Used

1 - DRL Diode
2 - Electronic Engine Controls Diode

Apr 06, 2011 | 2000 Ford Explorer

3 Answers

None of my wipers work. We were driving in the rain, and both the from and back wipers just quit. I did not check the fuses because they are 2 seperate fuses.


Both the front and rear wipers have a couple things in common. They are both powered by the 'Wiper System Relay". This relay supplies the power to both the front and rear wiper fuses. I would check for power at both of the fuses. If there is no power, then there is a problem with the relay or the relay circuits. The relay and both of these fuses are located in the underhood fuse/relay box. Please note that there is a "Wiper System Relay" as well as "Front Wiper Relay" and "Rear Wiper Relay" Why??? I don't know...some engineer at Saturn worked out his job-security with this one, I guess...

Any way, the Wiper System Relay feeds both of the fuses which, in turn, feed the two other relays.
The primary side of this relay is controlled by the Ignition 2 circuit from the ignition switch, so the relay is energized any time the ignition switch is on. (sounds like a good way to overheat and burn up a relay to me...but who am I??? I am not an engineer, I just get paid to deal with their stupidity)

The secondary side of this relay gets its power directly from the battery...no fuses in between, just a fusiblelink. This link is not the problem because there would be a whole bunch of other stuff not working - including your engine computer.

If I were to take a guess, it would be the relay.

Let me know if this helps you. Take a moment to rate my solution this will let me, as well as other know.

Feb 05, 2011 | 2003 Saturn VUE

1 Answer

Can know one solve the problem of the wipers on 96 plymouth voyageur why they will not come on the back one work fine have tried new motor new fuses and cant find the problem would appreciate if someone...


system should have a wiper relay in fuse panel,can a audible click be heard from dash area or arround fuse panel or exterior of firewall/engine compartment when wipers are turned on,if not locate relay (see owners manual) and check for power at relay with key on first then check for power out of relay when wiper switch is turned on,fuse should put power to relay when key is on,relay should put power to wiper motor when wiper switch is turned on

Oct 10, 2009 | 1996 Plymouth Grand Voyager

2 Answers

Rear wiper Ford Explorer 1998 won't work. Replaced motor and then found there was no power to connector at wiper motor. Fuses good both on fuse panel and power distribution box. Washer on wiper arm works.


Look for the fuse for the rear wiper motor is a 15 amp mini-fuse , in location # 8 of your POWER DISTRIBUTION BOX in the engine compartment. Check in the PD BOX for; - relay # 8 is the rear wiper down relay , and - relay # 10 is the rear wiper up relay .

May 17, 2009 | 2001 Ford Expedition

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