Wipers fail start

[MouSe]

2002 SSEi

Wipers fail to start, but will complete a full wipe if persuaded. Basically, I can flip the switch to any position I want, and nothing happens. However if I pull on the blades, they will complete a wipe cycle after hitting a certain point. Went to the JY, and bought a "new" motor and transmission assembly. Took the old one out, and put the "new" one in. Same freaking thing. This is disconcerting since I know the control board is part of the motor assembly. Could it be I just happen to have two motor with the EXACT same problem, or is it more likely my switch?

Another interesting thing is this. When I remove/reinstall the wiper fuse, with the switch on, I can hear the wiper motor (new or old) trying to do something but then after about 3 second I'll hear it click off.

[nos4blood70]

Sounds like maybe it's a wiper stalk issue?

[bobgto65]

more likely water got into the wiper motor case and ruined the circuit board. This is a common problem Time for a good used wiper motor assembly, contact haro.

[MouSe]

more likely water got into the wiper motor case and ruined the circuit board. This is a common problem Time for a good used wiper motor assembly, contact haro.

It ruined TWO boards in EXACTLY the same way? I'm more inclined to think the stalk has failed.

Now, I do have a replacement stalk. Just need to know how to replace the dang thing. I know the steering wheel has to come off, that's no problem. I just don't know how to get the airbag off the wheel without it killing me.

[MrJiggy716]

Sounds like the stalk I had issues with just the squirts not working and tried everything .... replacing the stalk last. Replaced the stalk and boom working fine. For what its worth I replaced mine with removal of the wheel at all.... pretty plug and play.

[harofreak00]

To remove the airbag, I use 2 precisely bent flat-blade screwdrivers (about 45°). Stick the screwdriver in the slot and pull towards the column to release the spring clips inside the wheel. Using a mirror to see the clips helps a lot. GM has a special tool for this, but I'm sure it costs about a bazillion dollars.

[Roadrunner]

I changed mine without removing the steering wheel or air bag.
Followed the procedure in the FSM - which was just removing and shifting some trim pieces and unbolting the stalk IIRC.

[MouSe]

I changed mine without removing the steering wheel or air bag.
Followed the procedure in the FSM - which was just removing and shifting some trim pieces and unbolting the stalk IIRC.

Hopefully my buddy still has his FSM.

[MouSe]

Sounds like the stalk I had issues with just the squirts not working and tried everything .... replacing the stalk last. Replaced the stalk and boom working fine. For what its worth I replaced mine with removal of the wheel at all.... pretty plug and play.

Yeah, I'm thinking it's this too. Main reason being is I've noticed that when I press the washer button I don't hear the pump run.

[MouSe]

Update:

New motor installed. New switch installed. Still the same thing. Body control module maybe? Anybody got any other troubleshooting tips I should be doing?

Or, does anybody have the pinout of the motor? I want to apply power and see what happens.

[MouSe]

Original motor, used motor, and NEW out of the box motor. Same thing.
Original switch, NEW switch, and KNOWN GOOD SWITCH. Same thing.

What in the hell could be the problem here?

[1tinindian]

Time to start checking the wiring.
Pinched, broken, corroded wire, open or high resistance.
Good luck, keep in touch when you find the cause.

Leon

[MouSe]

I'd love to, if I knew what I was looking for. I need a freaking wiring diagram. I'm selling the car so I don't wanna spend $ on a FSM for the car to be gone in a week. New owner knows of the issue too.

[harofreak00]

What diagram are you looking for exactly?

[bobgto65]

From the under hood fuse block, fuse 3 provides power directly to the wiper motor a yellow wire (hot in on and acc) wire B at the wiper connector, this should show 12V when hot
and fuse 2 (also hot in on and acc) goes to the ww switch, also a yellow wire. The wiper switch then has 3 wires to the motor in parallel, the first shows various resistances to the wire from the switch to the motor (Brown wire from the switch spliced to a dk blue wire to the wiper motor G. No resistance from fuse 2 to this wire in high, low or mist, the intermittents vary from 39K ohms to 680K ohms. A dark green wire also goes from the switch in a parallel circuit with the first circuit, with a 24K ohm resistor going out to the motor (wire becomes gray at the motor - E) and finally a purple wire only energized when the wipers are on high also runs in parallel with no resistance going from the switch to the motor.
When the switch is off, none of these will show any voltage

The DIM is connected to the WW switch with a pink/Blk wire that signals the DIM to turn the headlights on when the wiper is turned on. So in essence, no modules control the wipers. The switch and circuit board in the wiper motor are the only controls.

Foe the wiper motor connector, The dark blue is G, WW motor signal switch 1, Gray is E WW sig sw 2, Purple is H WW motor High Speed Signal, Yellow (B), accessory voltage, (F light green and D Black are not used), and C, Black is to ground. If you look at the connector, there are 2 rows of 4 wires. The row on the bottom, towards the retainer, the left pin is A not used B yellow, C Black, D black, top row, the left is H purple, G Dark Blue, F light green, and E gray).

To test the stalk, disconnect the connector at the wiper, Measure the resistance of the dk blue wire from the connector to fuse 2 and in high, low, and mist should be zero, and intermittent settings go from 39K to 680K. the gray wire should read 24K resistance at all switch settings except off. The purple wire should show continuity only when the switch is on high, otherwise no continuity and will be 12V to ground only in high, and the yellow wire should always read 12V to ground since it comes directly from fuse 3 to the wiper. Also check connector C Black for continuity with ground (to the splice pack S106 in the engine compartment on the left side of the radiator support). This may turn out to be your problem. If all the wiring tests Ok then your problem is in the wiper motor board circuit board.

[bobgto65]

wow I am only 24,507 posts behind haro in the race to 10,000.