Question about 1991 Chevrolet S-10

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I have a 1991 s10 Pickup the wipers stopped working and i switched out the wiper motor with another one.it has pulse on the switch the washer works fine with both motors.just the motor wont work what else to try?

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Wiper switch

Posted on Mar 22, 2011

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2002 trialblazer rear window wiper inop. changed switch and motor. no power to motor. cannot find relay nor fuse


There are something's involved that you are not aware of , or familiar with . Electronic control modules .
Rear Wiper/Washer System Controls
• Body control module (BCM)
• Liftgate control module (LGM)
• Rear wiper/washer switch
Do you know what a serial data network is ?
Rear Wiper/Washer System Operation
The rear window wiper/washer switch is an input to the BCM. The requested rear wiper mode is sent to the liftgate control module (LGM) by the BCM as a message on the serial data circuit, and the rear window wiper motor is controlled by the LGM. The switch power circuit to the rear wiper/washer switch is a 12-volt reference supplied by the BCM during ignition on, accessory or RAP power modes. The rear wiper/washer switch is a series of resistors and the switch position is determined by the voltage of the rear wiper/washer switch signal circuit to the BCM. The rear wiper/washer switch has continuity at all times and the BCM expects a rear wiper/washer switch signal voltage in all switch positions including OFF. The rear wiper motor is supplied battery positive voltage and ground. The LGM controls rear wiper motor operation through the rear wiper motor control circuit. The rear wiper motor control circuit is supplied a battery positive reference voltage by the rear wiper motor module and is pulse width modulated to ground by the LGM. The duty cycle of the pulse width modulation determines the rear wiper motor operating mode. The liftglass and liftgate ajar switches are inputs to the LGM and must be in an inactive state in order for rear wiper washer system operation to be enabled. When an ajar switch is active the LGM suspends wiper motor operation directly and sends the ajar switch status messages over the serial data circuit enabling the BCM to suspend washer pump operation. The rear window washer pump is controlled by the BCM through the rear washer relay. Battery positive voltage is supplied to the coil and switch sides of the rear washer relay. When the rear window wash request is active the BCM energizes the relay by grounding the relay coil through the rear washer relay control circuit. When the relay is energized battery positive voltage to the relay switch is supplied to the washer pump control circuit.

Your best bet , take it to a qualified repair shop and have it checked for DTC'S - diagnostic trouble codes .
DTC B1017 or B3970
The rear wiper motor is supplied battery positive voltage and ground. The liftgate control module controls rear wiper motor operation through the rear wiper motor control circuit. The rear wiper motor control circuit is supplied a battery positive reference voltage by the rear wiper motor module and is pulse width modulated to ground by the liftgate control module. The duty cycle of the pulse width modulation determines the rear wiper motor operating mode.
DTC B3799

2
Turn the ignition ON.
Operate the rear wiper switch through all the switch positions.
Does the rear window wiper operate normally?
--
YES - Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
NO - Go to Step 3
3
Install a scan tool.
Display the liftgate control module data list.
Observe the following parameters while operating the respective switches. Refer to Scan Tool Data List for typical values.
• Liftgate Ajar Switch
• Liftglass Ajar Switch
Did the scan tool indicate the correct switch positions?
--
Go to Step 4
Go to Courtesy Lamps Inoperative in Lighting Systems
4
Observe the requested rear wiper parameter in LGM data list.
Operate the rear wiper switch through all the switch positions.
Does the scan tool indicate the correct requested rear wiper parameter in relation to the switch position?
--
Go to Step 5
Go to Step 6

Feb 06, 2017 | 2002 Chevrolet TrailBlazer

1 Answer

Cadillac Deville 99


Wiper/Washer System (Pulse) Schematics (w/o CE1)
Wiper/Washer System (Pulse) Schematics (w/CE1)

Which one does yours have ?

The switch could be bad or the windshield wiper / washer module . Do you own a DVOM - digital volt ohm meter ? Do you know how to do automotive electrical trouble shooting ? There are a few good videos on youtube on basic electrical trouble shooting an how to read wiring diagrams . Go to http://www.bbbind.com/free_tsb.html for free wiring diagrams . Check B+ voltage at the switch (in an out ) at the different speeds .Check for B+ voltage at the wiper washer module , it's part of the wiper motor .
The windshield wiper/washer system consists of a permanent-magnet depressed-park wiper motor assembly, a wiper transmission assembly, wiper arm and blade assemblies, a washer pump mounted on a washer solvent container, and a wiper/washer switch assembly.
The wiper/washer system is a pulse (delay) type. Pulse timing and demand wash functions are controlled electronically. Wiper/Washer System Description (Rainsense)
The windshield wiper/washer system consists of a Rainsense module, a permanent-magnet, depressed-park wiper motor assembly, a wiper transmission, wiper arm and blade assemblies, a washer pump mounted on a washer solvent reservoir, and a wiper/washer switch assembly.
The wiper/washer system is a rain sensing type. Rainsense functions are controlled electronically. 1
Was the Wiper/Washer System Check performed?
--
Go to Step 2
Go to Wiper/Washer System Check

2
Inspect the WIPERS fuse A9 for an open.
Is the fuse open?
--
YES - Go to Step 3
NO - Go to Step 4

3
Replace the WIPERS fuse.
Is the replacement complete?
--
Go to Wiper/Washer System Check
--

4
Disconnect the wiper/washer switch connector C202.
Turn ignition switch ON.
Connect a test light from connector C202, terminal E5 to ground.
Is the test light on?
--
YES - Go to Step 16
NO - Go to Step 5

5
Connect a test light from Accessory Relay, terminal A1, to ground.
Is the test light on?
--
YES - Go to Step 6
NO - Go to Step 11

6
Connect a test light from Accessory Relay, terminal A3, to ground.
Is the test light on?
--
YES - Go to Step 7
NO - Go to Step 12

7
Connect a test light from Accessory Relay, terminal B1 to terminal A3.
Is the test light on?
--
YES - Go to Step 8
NO - Go to Step 15

8
Inspect CKT 143 for an open or poor connection between connector C202 and the Accessory Relay.
Was an open or poor connection found?
--
YES - Go to Step 9
NO - Go to Step 10

9
Repair the open or poor connection in CKT 143.
Is the repair complete?
--
Go to Wiper/Washer System Check
--

10
Replace the the Accessory Relay.
Is the replacement complete?
--
Go to Wiper/Washer System Check
--

11
Repair the open in CKT 1040 or the power feed circuit to the WIPERS fuse.
Is the repair complete?
--
Go to Wiper/Washer System Check
--

12
Inspect the ACC fuse C13 for an open.

let me know if you make it this far an then I will send the rest of testing procedures !

Mar 09, 2016 | Cadillac DeVille Cars & Trucks

2 Answers

Windshield wipers dont work i put a new motor in and a new wiper switch


HAVE YOU CK POWER? FUSES? WHEN YOU REPLACED THE WIPER MOTOR DID IT COME WITH THE PULSE CONTROL BOARD? THE BOARDS ARE KNOWN FOR FAILURE

Dec 17, 2014 | 2003 Chevrolet Trailblazer Ext

3 Answers

The wipers will not work in the daylight....when he starts the truck in the daylight the wipers will not come on.....at night when he is leaving work the wipers will work.....checked the fuses and replaced...


So what youre saying is the wipers work when the headlights are on
but the wipers dont work when the headlights are off?

I would suspect the turn signal switch is bad. I believe the switch on your S-10 controls
the wipers as well as switching from high beams to low beams. Since that switch is related
to the control of both headlights and wipers.

Could also be the headlight switch. The wiring harness from the turn signal switch plugs
into the headlights switch. I would replace the headlight switch first since you can get one
for around $25. Turn signal switch costs $150-$200. Maybe a little more or less for your vehicle.

Sep 10, 2011 | 1998 Chevrolet S-10 Pickup

1 Answer

Is there a procedure to check the wiper motor on 1991 S10 pickup (only 42000 miles), to be sure it is defective and not a wiring problem?


ONLY PROCEDURE FOR WIPER MOTOR IS YOU HAVE 2 SPEEDS THAT WORK SLOW AND FAST SPEED.WIPERS WILL RETRACT TO THE BOTTOM OF HOOD LINE WHEN YOU TURN OFF. WIPERS SHOULD TURN OFF. CHECK WIPER RESERVOIR MAKE SURE ITS FULL AND WIPER WASHER SPRAY FLUID CLEAN WINDSHIELD. IF WIPER MOTOR DO ALL THE ABOVE THEN ITS OKAY.IF WIPER MOTOR WORKS SLOW LOOK FOR BINDING AT WIPER ARM LINKAGE AND PIVOT LUBRICATE LINKAGE AND PIVOT COULD HELP.IF WIPER MOTOR DONT WORK CHECK FOR POOR GROUND OR BLOWED FUSE.WIPER WORK AT ONE SPEED CONTROL SWITCH IS BAD.IF WIPER BLADES STOP WHERE EVER THEY ARE OR FAIL TO TURN OFF UNLESS YOU TURN OFF IGNITION SWITCH WIPER MOTOR LIMIT SWITCH BROKEN.IF WIPERS DONT RETRACT BELOW BOTTOM HOOD LINE LOOK FOR MECHANICAL OBSTRUCTION OR WIPER MOTOR FAULTY.

Nov 14, 2010 | Chevrolet S 10 Cars & Trucks

2 Answers

Wiper stopped working...what is the problem


Wipers Not Working - Things to Check

To troubleshoot car windshield wiper problems, you need to thoroughly investigate problems with any of its operating parts. Here are some of the things that you need to check to determine why are your car windshield wipers not working.

Check Wiper Motor
The wiper motor is the driving force of the windshield wiper. Feel the motor and listen to a humming sound. If there is no humming, the motor is the problem. Check if the motor is working properly and see to it that its electrical connections are made properly. If you find that the motor is dead and beyond repair, get it replaced immediately.

Check For Break in Connecting Wires
The connecting wires of the motor sometimes go loose and that may cause the windshield wipers to stop working. Also check the battery plug connection which the motor has. Connecting the loose wires properly or fixing/replacing the plug might solve your problem.

Check Wiper Switch
Another wiper assembly part that can malfunction is the wiper switch itself. Check for switch malfunction and if you find that is indeed the problem, get it replaced from a mechanic.

Check for Bent Wiper Arms
Bent wiper arms can cause the operation of the wipers to be hampered. If the wiper arms are bent beyond repair, get them replaced immediately.

Check For Blown Out Car Fuse
A blown up car fuse could be the culprit that has stopped the windshield wipers from working. Check the fuse assembly under the dashboard of the car. Replacing a blown fuse might fix the problem of windshield wipers not working.

Windshield Wiper Sprayers Not Working - Things to Check

Sometimes the windshield wiper sprayer stops working which can be very annoying. The washer mechanism is a self cleaning mechanism for the windshield. Here are some of the things that you need to check in case it is not working.

Check Windshield Washer Motor
The windshield washer mechanism might have been impaired due to the malfunctioning of the wiper washer motor. Check if its working and get it replaced if it is beyond repair.

Check Windshield Washer Fluid Level
Sometimes the washer doesn't work because the washer fluid levels are not filled to requisite levels. Filling in fluid might restore normal functioning.

Check For Broken Washer Hose
The connecting washer hose that connects the reservoir to the nozzle, might be broken or worn out stalling the overall operation. Check the hose for leaks and get it replaced.

Check Washer Nozzle For Clogging
Last thing to check is the nozzle of the washer for clogging. An obstruction in the washer nozzle might be the reason for windshield wiper sprayers not working. Using a pin, clean the clogged nozzle. This might restore the sprayer to the normal working condition.

Jun 07, 2010 | 1998 Saturn SL

2 Answers

Changing wiper motor in chev s10


It's not bad. They make a special tool to remove the motor from the arm assembly, but with a little determination I was able to remove it with out the tool. If your wipers aren't working try running power to the motor first to test it. I swapped it out and the problem ended up being a bad ground in the switch. I bypassed that for a little while by running a jumper wire from the engine block to motor. It also could be the pulse module they are known for going bad in GM vehicles.

Jan 18, 2009 | 1998 Chevrolet S-10 Pickup

1 Answer

Windshield washer doesn't work. I'm looking for the location of motor


Service and Repair
  1. Turn ignition switch to the ACCY position, then set wiper switch to the "PULSE position.
  2. Turn ignition switch off when wiper arms are at bottom and not moving.
  3. Lift wiper blade assembly up from windshield.
  4. Pull out retaining latch with a screwdriver.
  5. Pull wiper arm assembly off transmission driveshaft.
  6. Disconnect battery ground cable.
  7. Disconnect hose from washer hose.
  8. Remove five air inlet panel retainers.
  9. Push washer hose into firewall.
  10. Remove air inlet panel from vehicle.
  11. Using wiper transmission separator tool No. J-39232, or equivalent, remove transmission drive link socket from wiper motor crank arm.
  12. Pull two harness connector retainers out of wiper motor connector.
  13. Disconnect two harness connectors from wiper motor.
  14. Remove wiper motor attaching bolts and stud, then the wiper motor from the vehicle.
  15. Reverse procedure to install.

Dec 10, 2008 | 1995 Oldsmobile Aurora

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