On my 2007 Corvette the wipers stopped working, actually it has not worked for 2 years. It really doesn't matter as The car has never been driven in the rain, but I want it fixed! Why I waited this long I have no idea.

Anyway, I was told it is the wiper relay does that sound right? If it is the relay can you tell me which one it is?

Thanks,

 

Try to help it by moving the wiper arm yourself also. This might unfreeze the motor.

 

What is this "wiper" thing you speak of? I'm not sure my ombrophob has such a thing.

 

Wipers...hahahahahah

 

In the fuse box in the engine compartment, check fuse #4 (Wiper).

There are actually 3 mini relays involved.

#41- Windshield Wiper Hi/Lo

#42- Winshield Wiper Run/Accessory

#45- Windshield Wiper On/Off

You could swap in/out mini relay #40 (Rear Defog) as a test

This info is in your Owners Manual, if you have one.

 

Okay and thanks all. I got it working.

 

How?

 

Damnedest thing.

 

I tried swapping test, and wipers still would not work. I gambled went to Autozone and Bought all 3 relays 41, 42 and 45. I popped in all 3 and Bingo, wipers work.

Tonight I was playing around with old relays and tried a couple of youtube videos to test them and they all pass. Confused here but glad they are wipers are working with new relays

 

I just don't get it, I uncovered in garage after a few months winter storage and wipers didn't work, swapped the relay as mentioned, still not work. Went bought the 3 Relays and Profit windshield wipers working. So bored at night youtube on checking relays and bench tested the 3 relays and all 3 passed the test. I may try popping them back in and trying again, but scared I'll jinx myself.

Anyone have a clue or guess? Bugging the crap out of me.

 

Man, I’m having the same issue with my 2009 XLR. I swapped the relays with other ones and still nothing. Check all the fuses and even the three diodes and they are all OK.

I then pulled the relays to Hotwire the power to the wiper motor to verify that the motor is OK and that went OK so I know the wiper motor is fine.

I then pulled the steering column apart and hot wired the plug that connects to the wiper arm and verified that the GND source wire is working as I could get my windshield squatters to work but not the Hi or Lo wipers.

so I know it’s not the wiper switch, not the fuses, not the relays, not the motor… where should I look next?

 

Do you have a wiring diagram for that car ??

 

Turn your wipers on get out of car and by hand move wiper blade see if it will start moving on it own

 

yup. i've been using it to help my diagnoses process.

cadbob, i never did this, but i can confirm that when i had my dad turn the wiper indicator to Wiper Lo and wiper HI, i did not hear or feel the wiper relay click. on. so i'm really thinking the relays are not getting the GND signal to trigger the relays on (pin 86) on relay. I confirmed that i have 12V switched from fuse No. 4 to Pin 85 on the relay.

 

Hopefully it isn't electrical for you.I was like why is this happening again to me, probably I should of manually moved wipers first time. Think my motor is weak or just lack of use. I did buy a used motor on Ebay, so if it does fail I have one. was cheap at 40.00 shipped. Keeps us updated on your issue please.

 

I am away from country for a month so I won’t be able to work on it until July, so in the mean time I was hoping to pick some people’s brains, it it appears my issue may be very unique, sadly.

 

Wipers Inoperative - All Modes
Diagnostic Aids
If the 30 A WIPER fuse located in the underhood fuse block is open, a short to ground in any one of the following circuits may be the cause:

• Windshield wiper motor high speed circuit

• Windshield wiper motor low speed circuit

• Windshield wiper motor park switch voltage supply circuit

• Windshield wiper motor park switch signal circuit

• Accessory voltage -- WIPER RUN/ACC relay switched voltage circuit

If the 10 A WPR/WASHER fuse located in the instrument panel (I/P) fuse block is open , a short to ground in any one of the following circuits may be the cause:

• Accessory voltage circuit to the wiper switch

• Windshield washer switch signal circuit

• Windshield wiper switch low signal circuit

• Windshield wiper switch high signal circuit

• Windshield washer relay control circuit

• Headlamp washer relay control circuit

DIAGNOSTIC STEPS - WIPERS INOPERATIVE IN ALL MODES

STEP # 1 ACTION Did you perform the Diagnostic System Check - Vehicle? IF YES Go to Step 2 IF NO Go to Diagnostic System Check - Vehicle

STEP # 2 ACTION Turn ON the ignition.
Attempt to operate the windshield wipers in all modes.
Are the windshield wipers inoperative in all modes? IF YES Go to Step 3 IF NO Go to Testing for Intermittent Conditions and Poor Connections

STEP # 3 ACTION Install a scan tool.
Turn ON the ignition, with the engine OFF.
With a scan tool, observe the Windshield Wiper Switch parameter in the Body Control Module data list.
Place the wiper switch in the LOW speed position.
Does the Windshield Wiper Switch parameter display Low? IF YES Go to Step 6 IF NO Go to Step 4

STEP # 4 ACTION Turn OFF the ignition.
Remove the wiper RUN/ACC relay. Refer to Relay Replacement .
Turn ON the ignition, with the engine OFF.
Probe the battery positive voltage circuit of the wiper RUN/ACC relay with a test lamp that is connected to a good ground.
Does the test lamp illuminate? IF YES Go to Step 5 IF NO Go to Step 14

STEP # 5 ACTION Turn OFF the ignition.
Disconnect the windshield wiper/washer switch.
Turn ON the ignition, with the engine OFF.
Connect a test lamp from the battery positive voltage circuit of the wiper switch connector to a good ground.
Does the test lamp illuminate? IF YES Go to Step 10 IF NO Go to Step 16

STEP # 6 ACTION Turn the ignition OFF.
Remove the wiper HI/LO relay. Refer to Relay Replacement .
Turn the ignition ON, with the engine OFF.
Place the windshield wiper/washer switch in the LOW position.
Probe the voltage supply circuit of the HI/LO relay with a test lamp that is connected to a good ground.
Does the test lamp illuminate? IF YES Go to Step 8 IF NO Go to Step 7

STEP # 7 ACTION Turn OFF the ignition.
Remove the wiper ON/OFF relay. Refer to Relay Replacement .
Turn ON the ignition, with the engine OFF.
Probe the battery positive voltage circuit of the wiper ON/OFF relay with a test lamp that is connected to a good ground.
Does the test lamp illuminate? IF YES Go to Step 12 IF NO Go to Step 15

STEP # 8 ACTION Turn OFF the ignition.
Install the wiper HI/LO and ON/OFF relays.
Disconnect the windshield wiper motor.
Turn ON the ignition, with the engine OFF
Connect a test lamp from the wiper motor low speed circuit of the wiper motor connector to a good ground.
Place the wiper switch in the LOW speed position.
Does the test lamp illuminate? IF YES Go to Step 9 IF NO Go to Step 13

STEP # 9 ACTION Connect the test lamp between the low speed circuit of the wiper motor connector and the ground circuit of the wiper motor connector.
Place the wiper switch in the LOW speed position.
Does the test lamp illuminate? IF YES Go to Step 11 IF NO Go to Step 17

STEP # 10 ACTION Inspect for poor connections at the harness connector of the windshield wiper/washer switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition? IF YES Go to Step 22 IF NO Go to Step 18

STEP # 11 ACTION Inspect for poor connections at the harness connector of the wiper motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition? IF YES Go to Step 22 IF NO Go to Step 19

STEP # 12 ACTION Inspect for poor connections at the ON/OFF relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition? IF YES Go to Step 22 IF NO Go to Step 20

STEP # 13 ACTION Inspect for poor connections at the HI/LO relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition? IF YES Go to Step 22 IF NO Go to Step 21

STEP # 14 ACTION Repair the short to ground or open in the battery positive voltage circuit of the wiper RUN/ACC relay. Refer to Wiring Repairs .
Did you complete the repair? IF YES Go to Step 22 IF NO --

STEP # 15 ACTION Repair the short to ground or open in the battery positive voltage circuit of the wiper On/Off relay. Refer to Wiring Repairs .
Did you complete the repair? IF YES Go to Step 22 IF NO --

STEP # 16 ACTION Repair the short to ground or open in the battery positive voltage circuit of the windshield wiper/washer switch. Refer to Wiring Repairs .
Did you complete the repair? IF YES Go to Step 22 IF NO --

STEP # 17 ACTION Repair the open in the ground circuit of the windshield wiper motor. Refer to Wiring Repairs .
Did you complete the repair? IF YES Go to Step 22 IF NO --

STEP # 18 ACTION Replace the windshield wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement .
Did you complete the replacement? IF YES Go to Step 22 IF NO --

STEP # 19 ACTION Replace the wiper motor. Refer to Windshield Wiper Motor Replacement .
Did you complete the replacement? IF YES Go to Step 22 IF NO --

STEP # 20 ACTION Replace the wiper ON/OFF relay. Refer to Relay Replacement .
Did you complete the replacement? IF YES Go to Step 22 IF NO --

STEP # 21 ACTION Replace the wiper HI/LO relay. Refer to Relay Replacement .
Did you complete the replacement? IF YES Go to Step 22 IF NO --

STEP # 22 ACTION Reconnect all previous disconnected components.
Clear all DTCs with a scan tool.
Operate the system in order to verify the repair.
Did you correct the condition? IF YES System OK IF NO Go to Step 2

 

C6ToGo, this is GOLD!. I have a friend with a Tech II scanner, so i'll put it on my To-Do list once i'm back.

Thanks very much. I trust you didn't type this all out

Adrian Karolko