Front windshield wipers that never turn off!!!
- johnathon.balderas
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Case Number 999924003
Vehicle Issue Wipers run all the time=>Repair short to ground in the washer circuit.;Which wiper/washer system has problem? >> front In what area is the electrical problem? >> Wiper/washer system What is the problem with the wipers/washer? >> wont turn off With the DRBIII can you see the wiper switch input to the BCM? >> YES If you unplug the washer switch do the wipers quit? >> NO Does the washer switch show closed? >> YES Does the voltage change from approx 0-4 volts when moving the wiper switch from off to low in steps? >> YES
System or Component Stuck;Customer Concern (No DTCs);Wiper / Washer System
Recommendation Repair the washer switch wire for a short to ground.
Modification Date null
Me again .. Im not sure I follow this exactly but to me, this seems like it is a tip to focus on the washer portion of the circuit maybe? So my suggestion @ this point would be to find the washer switch data pid and see if it shows closed or open??
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FAILED PARK SWITCH
If the wiper park switch has failed the windshield wipers will operate as follows:
SWITCH OFF - Wipers stop in current location regardless of the park signal.
INTERMITTENT MODE - Wipers operate at low speed for one or more extra wipes or continuously.
LOW SPEED - Wipers operate at low speed.
HIGH SPEED - Wipers operate at high speed.
PULSE WIPE - Wipers will not operate.
WIPE AFTER WASH - Wipers operate at low speed in any mode setting. Wipers operate only while wash button is depressed with switch in OFF mode, wipers stop in mid-cycle when button is released.
The windshield wiper park switch and circuit is monitored by the BCM. The park switch and circuit can be tested using the Wiper System Diagnosis table.
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- johnathon.balderas
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- johnathon.balderas
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"Ground cannot be checked with a 10mm socket"
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- johnathon.balderas
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twicejohnathon.balderas wrote: that fixed wipers that never turned off?
"Ground cannot be checked with a 10mm socket"
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Ahhhhh.... correction, shes grounding the wiper module in this case?
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- johnathon.balderas
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- johnathon.balderas
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I wish I could have been more help.
Truth be told, I fixed those Neons years before I got serious about learning automotive circuitry. I'll admit I got lucky with a visual inspection!
The first one was hit in the nose and got a radiator support and paint job.
The body guy thought the car was haunted, lol. I opened the hood and said "well that's a lot of blue paint!", popped off the ground, sanded off some paint and looked like a hero!
The next one I saw doing that, I went right for that ground.
Now that I've got some education I should pull a diagram and try to figure the "why".
My best educated guess is that the PCM or some vital key on component was missing that ground and found one via back feed through the wiper/washer circuit.
Kind of like when you energize a relay with a test light and sometimes the test light lights up and the relay clicks.
"Ground cannot be checked with a 10mm socket"
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