Question about 1988 Ford F 150

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Interval wiper problem

1988 f-150 4x4 new switch no interval feature, is there an inline power source and where it might be located

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Turn the knob the opposite direction, thats all of your intevals

Posted on Jan 25, 2009

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Where is the relay and fuse for rear wiper located ?


The rear wiper / washers are controlled by the GEM - generic electronic module .
NOTE: The generic electronic module (GEM) will not activate the rear wiper system if either the liftgate or the liftgate glass is ajar. If either the liftgate or the liftgate glass becomes ajar while the rear wiper is in operation, the GEM will park the rear wiper motor.
There are two distinct modes of wiper operation:
  • Off Mode: In this mode, there is no rear wiper activity, and the wiper motor will be in the PARK position.
  • Interval Mode: This mode is selected when the rear wiper switch is in either the Interval 1 or 2 position. When this mode is selected, the rear wiper motor is driven up onto the glass by activating the rear wiper UP relay. When the wiper motor HIGH/LOW/PARK position input reaches the high position, the UP relay is deactivated and the DOWN relay is activated to reverse the wiper motor direction. When the wiper motor reaches the LOW position, as determined by the HIGH/LOW/PARK position input, the GEM deactivates the DOWN relay and will begin a new wiper cycle 1 to 10 seconds later, depending on the interval position selected.
Inspection and Verification
  1. The wiper/washer system is a generic electronic module (GEM) controlled system; refer to Section 419-10 .
  1. Verify the customer concern by operating the wiper/washer system.
  1. Visually inspect for obvious signs of mechanical and electrical damage.
Visual Inspection Chart Mechanical Electrical
  • Hoses to windshield washer pump
  • Wiper linkage
  • Fuses 6 (5A), 8 (5A), 15 (5A), and 20 (5A)
  • Wiring harness
  • Loose or corroded connector(s)
  • Relays
  • Motors
  • Multifunction switch
  • Washer fluid level switch
  1. If the concern remains after the inspection, connect New Generation STAR (NGS) Tester to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the NGS menu. If NGS Tester does not communicate with the vehicle:
    • Check that the program card is properly installed.
    • Check the connections to the vehicle.
    • Check the ignition switch position.
  1. If NGS Tester still does not communicate with the vehicle, refer to the New Generation STAR Tester manual.
  1. Perform the DATA LINK DIAGNOSTIC TEST. If NGS Tester responds with:
    • CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to Section 418-00 .
    • NO RESPONSE/NOT EQUIPPED for generic electronic module (GEM), go to Pinpoint Test M.
    • SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and perform self-test diagnostics for the GEM.
  1. If the DTCs retrieved are related to the concern, go to GEM Diagnostic Trouble Code (DTC) Index to continue diagnostics.
  1. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics. Your best bet is take this to a ASE certified repair shop !

Mar 13, 2016 | 1999 Ford Expedition

1 Answer

92 crown vic lx ... I changed the wiper motor, switch and the power train Control module. Still don't have wipers!! Any suggestiobs??? Thank you!




1. Access the interval governor located above the warning chime
under the driver side of the dash and disconnect it.

2. Install a jumper wire between the Dark Green (DG) wire and the Yellow/Red (Y/R) wire.

3. Install a 2nd jumper wire between the Dark Blue/Orange (DB/O) wire and a Black (BK) wire. Either BK wire of the module should work, both are dedicated chassis grounds for the module.

4. Turn the ignition switch to the Run position and verify that the wipers are running on low speed.

5. Disconnect the jumper wires.

6. Connect an ohmmeter between the Dark Blue/White (DB/W) wire and the Brown/White (BR/W) wire.
With the wiper switch in the OFF position, resistance should indicate about 47,500 ohms.

7. Move the wiper switch to the low speed position, resistance should change to indicate about 4000 ohms.

8. Move the switch to the high speed position, resistance should change to indicate less than 100 ohms.

9. If the wiper motor runs and the switch resistance checks as stated, replace the interval governor.

May 31, 2015 | Cars & Trucks

1 Answer

Wipers do not work


Guessed it's a V6. Power comes from 20A fuse 14 in the fuse block. The wiper/washer switch controls the wiper motor for HI/LO operation but an intermittent wiper control module affects the delay interval you select with the wiper switch

Oct 18, 2012 | 1993 Dodge Shadow

1 Answer

2004 toyota tacoma windshield wiper switch or motor


If you have interval wipers, you need to check the 10A GAUGE fuse and the 20A WIPER fuse. If OK, check for power output from the combination switch. Washer-wiper action is synchronized so that washing occurs before wiping but the wash action can be skipped. You can check for power across the BLU and BLU/ORG leads of the washer motor and the RED/WHT and BLU/BLK leads of the wiper motor if you suspect toe motor(s) are bad.

Sep 17, 2012 | 1994 Toyota Pickup

1 Answer

Wipers would not park, customer forced down wiper arm and broke off arm. Now no electric to wipers.


Before 1995 Ford interval wiper systems mainly consisted of a switch, the motor and the interval governor (also called the wiper control module or 'WCM'). The basic wiper systems just parked the wipers at the end of their travel at the base of the windshield and involved just one park switch.

The more complex systems not only stopped the wipers at the base of the windshield, but would actually recess them below the windshield to park them. This involved using two park switches to turn the wiper motor in a reverse direction. These were installed on the Crown Victoria, Grand Marquis, Town Car, Taurus and Sable.

The wiper switch (named 'Multi-Function Switch' on most models) had a common return or ground circuit and two input or signal circuits to the WCM. Basically, the switch was two modified potentiometers that varied the resistance to ground for the two signal circuits. When the wiper switch was placed in the low or high position, the WCM looked at only one of the circuits- the 'mode input' -and controlled the wiper motor accordingly. If the wiper switch was placed in any of the interval positions, the mode input told the WCM that the switch was in an interval position. The WCM then looked at the second input - the 'delay input' - and used it to determine the amount of delay between wipes.

1) To run the wipers on low or high speed, the WCM provided constant power to the wiper motor on the proper circuit to provide the requested speed. Dual park switch motors
1.1 The first park switch operated basically in the same way as the single switch systems.
1.2 The second park switch worked in the opposite manner- when the wipers were off the park position, the second switch provided a ground for the wiper motor. Power and ground were now provided by the park switches.
1.3 When the wipers needed to park, the polarity of the switches changed, and thus provided reversed voltage to drive the motor in the opposite direction.

2) To run the interval wipers, the WCM applied voltage to the wiper motor only momentarily to get the wipers off the parked position.
3) The electro-mechanical park switch made a circuit between the power feed in and the output to the WCM. Power was provided from the park switch through the WCM and back to the wiper motor.
4) When the wipers reached the park position, the park switch made a circuit between the ground and the output to the WCM, and the motor stopped running. The wiper motor and the wiper switch have remained much the same as the single park switch motors of the past.

The main difference is that the switch has become an input to the GEM instead of the WCM.
1) When the wiper switch is placed in the low or high position, the Run-Park relay is grounded by the GEM to provide constant voltage to the High-Low relay, which then provides voltage to the proper circuit of the wiper motor.
2) High-Low relay is in the low speed position unless grounded by the GEM.
3) The park switch not only feeds the Run-Park relay but is now also an input to the GEM. This tells the GEM when the wipers are in the parked position so it can de-energize the Run-Park relay.
4) When any of the interval positions are selected, the Run-Park relay is momentarily grounded to get the wipers off the parked position
5) The park switch then provides voltage to the other set of contacts in the Run-Park relay.
6) When the GEM de-energizes the Run- Park relay, voltage is still provided from the park switch to the High-Low relay and the wipers complete the stroke.

Click over diagrams for zoom:

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Hope this helps.

Feb 08, 2011 | 1993 Mercury Grand Marquis

1 Answer

I have replaced the wiper switch on my 1990 F 250 and it still is not working properly. Since the wipers work I am assuming it is not the motor. That seems to indicate it is something called the...


Hi:
If your truck has a wiper switch that you rotate counter clockwise to get the intermittent wipe mode, and turn clockwise to get to the low and high settings, then your truck has a interval wiper relay module. You could have a bad wiper switch assembly too, as the intermittent part of the switch is seperate from the low and high wiper switch. It is a inexpensive part, less than $20 for the switch, and the interval wiper relay part is somewhat expensive, 70-100 bucks or so. My truck didn't have intermittent wipers when I bought it, so I went to a junk yard and removed a switch and a module from a wrecked truck for $40, and it has worked fine ever since. Maybe you can find a good used part to swap into your truck for testing? Once you buy new electrical parts, you cant return them!

Apr 21, 2010 | 1990 Ford F250

1 Answer

Need to get a programmer dont know where its at


  • Windshield Wipers Continue to Run When Turn Signal and Windshield Wiper Switch Are Turned OFF
  • Damaged turn signal and windshield wiper switch .
  • Damaged windshield wiper motor .
  • Damaged windshield wiper control module.
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Pin Number Circuit Circuit Function 1 57 (BK) Wiper Motor Ground (Park) 2 28 (BK/PK) Wiper Module to Wiper Motor (Park Switch) 3 65 (DG) Wiper Motor Power (Park Feed) 4 61 (Y/R) Wiper Motor Common (RUN) 5 56 (DB/O) Wiper Motor LO 6 58 (W) Wiper Motor HI
Windshield Wiper System The windshield wiper system consists of :
  • Windshield wiper motor (17508) (F-type).
  • Washer system.
  • Windshield wiper control module.
  • Turn signal and windshield wiper switch (13K359).
The windshield wiper control module is:
  • Located at the instrument panel fuse panel.
The windshield wiper motor is:
  • Attached to the cowl top extension (021A36) .
  • Connected to windshield wiper mounting arm and pivot shaft (17566) .
The turn signal and windshield wiper switch features a:
  • Rotary wiper switch.
  • Push type washer actuator.
OFF/Low/High Speed
  • Has a two-speed, permanent magnet, three brush electric windshield wiper motor .
  • The windshield wiper motor has a brush rigging that permits selection of low or high speed.
  • When the turn signal and windshield wiper switch is in the LO position, the common brush and the blue/orange wire brush are used, and the windshield wiper motor operates at low speed.
  • When the turn signal and windshield wiper switch is in the HI position, the common brush and the white wire brush are used.
  • In HI position, electric current will bypass a portion of the armature winding causing the windshield wiper motor to operate faster.
  • When the turn signal and windshield wiper switch is moved to the OFF position, the windshield wiper motor will continue at low speed until the park switch outer contacts open.
  • When the park switch contacts open, the windshield wiper motor stops in the park position.
Interval
When the turn signal and windshield wiper switch is in the interval position:
  • The wipers make single wipes separated by pauses.
  • The rotary switch is on the end of turn signal and windshield wiper switch .
  • The length of the pause can be set from approximately 1 to 17 seconds.
  • Length of pause decreases as the rotary switch is rotated away from off.
  • Length of pause increases as the rotary switch is rotated toward off.
While in the interval wiper mode:
  • It is normal to hear a slight click at the beginning of each on/pause cycle. NOTE: When using interval wipers, the first wipe may not occur until after a pause of up to 17 seconds.

May 27, 2009 | 1994 Ford Mustang

1 Answer

1997 F150 power windows, wipers not working


It could be the GEM, Generic Electronic Module IF
you have a speed dependant interval wiper whre the interval changes as speed changes and
your "One touch" down driver window feature does not work. If passenger window does not work, it is not GEM. Is lockout switch on driver door off?

go to car-part.com for used part. look on page with asterisk for lowest price.
new - tascafordparts.com

wiper

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power window
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May 13, 2009 | 1997 Ford F150 Regular Cab

1 Answer

I have a 1988 f-150 4x4. Just replaced interval wiper switch, the interval feature is very inconsistant. Is there an inline power source and where is it located.


is it just the interval part that is not working correctly? if so there is a wiper governor that is plugged inline with the switch that might be the cause

Nov 14, 2008 | 1988 Ford F 150

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