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Author Topic: wipers  (Read 6440 times)
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Lisa
Guest
« on: June 05, 2003, 02:56:58 PM »

Today my wipers would not turn off. Even when the "switch" was on the off position. After turned the car off and left it for severals hours (in frustration), the wipers did not come on. I haven't put them on because I am afraid they will stay on again. Has anyone had this problem? I just got the Body Control Module replaced a few weeks back. I am tired of these things going wrong!!!!!

Lisa :angry:  
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greg_foulks
Guest
« Reply #1 on: June 05, 2003, 03:01:36 PM »

I've not heard of this one yet. It's quite possible that a code in the BCM might need to be changed given you just had the BCM replaced.


Or you could have a short in the wiper relay?   :blink:
 
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0aztek3
Guest
« Reply #2 on: June 05, 2003, 10:05:13 PM »

Heres some info from the servical manual regarding your problem, hope this helps. Good Luck

The windshield wiper motor module is part of the windshield wiper motor cover and controls wiper motor operation. The windshield wiper motor is a 2 speed motor and is operated at low speed in all modes except HIGH. The accessory voltage supply circuit to the windshield wiper motor assembly is used to operate the wiper motor in all of the low speed modes. The accessory voltage supply circuit to the windshield wiper/washer switch is used to supply the windshield wiper switch signal circuits and the wiper motor high speed circuit.

When the wiper/washer switch is in the LOW position voltage is supplied through a 24K ohm resistor within the switch to the windshield wiper switch signal 2 circuit, and accessory voltage is supplied to the windshield wiper switch signal 1 circuit. The reduced voltage from the wiper switch signal 2 circuit and accessory voltage from the wiper switch signal 1 circuit causes the wiper motor module to close the wiper motor accessory voltage supply circuit to the wiper motor low speed terminal.

Windshield wiper/washer system MIST operation is identical to LOW operation except that the MIST switch is a press and release type. When the wiper switch is moved to the MIST position and released, low speed wiper motor operation is started and will continue until 1 cycle is complete. If the wiper switch is moved to the MIST position and held, the windshield wiper motor will operate in the LOW mode until the switch is released.

Windshield wiper DELAY operation is a low speed wiper motor function with a variable delay interval between the wiper motor cycles. The DELAY interval is controlled through a series of resistors within the wiper/washer switch. During DELAY wiper operation the wiper switch signal 2 circuit is at the same voltage level used for LOW operation, but the wiper switch signal 1 circuit voltage is reduced through the DELAY resistors. The windshield wiper motor module uses a capacitor feed by the wiper switch signal 1 circuit to determine the frequency of the low speed wiper motor cycles. When the wiper switch signal 1 circuit is at the accessory voltage level as in the LOW switch position, the capacitor charges fast causing continuous low speed wiper motor operation. The DELAY switch position indicating the longest interval between wiper motor cycles is the switch position with the highest resistance resulting in low voltage on the wiper switch signal 1 circuit. The low voltage charges the capacitor slowly causing a long delay interval between wiper motor cycles. As the DELAY switch is turned to positions indicating more frequent wiper cycles, the resistance through the wiper/washer switch is reduced and the wiper switch signal 1 circuit voltage increases. When the wiper switch signal 1 circuit voltage increases the capacitor charges faster and the delay interval between wiper motor cycles decreases.

When the wiper/washer switch is in the HIGH position the accessory voltage to the wiper/washer switch is closed to the wiper motor high speed circuit. The accessory voltage on the high speed circuit is supplied to the wiper motor module and is used to operate the wiper motor at high speed. During HIGH speed wiper motor operation the wiper switch signal 1 and signal 2 circuits are at the LOW speed signal voltages, but the LOW speed signal circuit inputs to the wiper motor module have no effect on wiper motor high speed operation.

The windshield wiper/washer system WASH function uses 2 switch contacts within the wiper/washer switch assembly. One switch contact closes the wiper/washer switch accessory voltage supply circuit to the wiper switch signal 2 circuit. Accessory voltage on the wiper switch signal 2 circuit causes the wiper motor module to close the wiper motor accessory voltage supply circuit to the wiper motor low speed terminal. The WASH command on the wiper switch signal 2 circuit will cause the wiper motor to operate at low speed for as long as the switch is held in the closed position and approximately 6 seconds after being released. The other WASH switch contact in the wiper/washer switch is the control circuit to the windshield washer pump. When the WASH switch is in the held in the closed position the wiper/washer switch accessory voltage supply circuit is used to operate the windshield washer pump until the switch is released.

Windshield wiper motor park operation is controlled by the wiper motor module using an input from the park switch within the wiper motor assembly. When the windshield wiper/washer switch is turned to the OFF position while the wiper motor is somewhere in mid-cycle, the wiper motor module will continue to operate the wiper motor until the wipers reach the park position.

Wipers Always On
Test Description
The number below refers to the step number on the diagnostic table.

Tests for an internal fault in the windshield wiper/washer switch.


Schematic Reference: Wiper/Washer System Schematics

Connector End View Reference: Wiper/Washer System Connector End Views
 
1
 Did you review the Wiper/Washer System Description and Operation and perform the necessary inspections?
 Go to Step 2
 Go to Symptoms - Wiper/Washer Systems
 
2
 Turn the ignition ON.
Operate the windshield wiper/washer switch in all of the switch positions.
Turn the windshield wiper/washer switch OFF.
Are the windshield wipers always on?
 Go to Step 3
 Go to Testing for Intermittent and Poor Connections in Wiring Systems
 
3
 Disconnect the windshield wiper/washer switch connector at the multifunction switch assembly.

Are the windshield wipers always on?
 Go to Step 4
 Go to Step 7
 
4
 Disconnect the windshield wiper motor connector.
Test the windshield wiper switch signal 1 circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
 Go to Step 11
 Go to Step 5
 
5
 Test the windshield wiper switch signal 2 circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?
 Go to Step 11
 Go to Step 6
 
6
 Test the windshield wiper motor high speed circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?
 Go to Step 11
 Go to Step 9
 
7
 Inspect for poor connections at the windshield wiper/washer switch. Refer to Testing for Intermittent and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?
 Go to Step 11
 Go to Step 8
 
8
 Replace the windshield wiper/washer switch. Refer to Multifunction, Turn Signal Switch Replacement in Steering Wheel and Column.

Is the repair complete?
 Go to Step 11
 --
 
9
 Inspect for poor connections at the windshield wiper motor. Refer to Testing for Intermittent and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?
 Go to Step 11
 Go to Step 10
 
10
 Replace the windshield wiper motor cover. Refer to Wiper Motor Cover Replacement .

Is the repair complete?
 Go to Step 11
 --
 
11
 Operate the system in order to verify the repair.

Did you correct the condition?
 System OK
 Go to Step 3
 
/END
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MQV Son of Quinn
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« Reply #3 on: June 06, 2003, 06:31:29 AM »

WOW THAT"S A MOUTHFUL

Jack

 :usa:
« Last Edit: June 06, 2003, 06:32:10 AM by nxthome1 » Logged

Jack Egan
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AztekAndrew
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« Reply #4 on: June 06, 2003, 07:21:31 AM »

03,

I thought that there was a change in the wiper design between the 02 and 03 models.  It was my understanding that the 03's are computer controlled for timing, delay, etc.  Though 01, and 02 definately use the resistor setup described above.  
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-Andrew

2002 FWD 1SC
In Black
0aztek3
Guest
« Reply #5 on: June 06, 2003, 08:56:37 AM »

Good point Andrew, I heard something about that. I just crossreferenced my manuals and they show no difference between years(identical schematics too) Its possible it may have been a mid cycle '03 change and I have the older version of the service manuals
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AztekAndrew
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« Reply #6 on: June 06, 2003, 09:49:33 AM »

I only have the 01-02 manual, so I can't confirm it either.  The real question is where could we have both read or heard about the change and yet not rememeber!
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-Andrew

2002 FWD 1SC
In Black
Lisa
Guest
« Reply #7 on: June 06, 2003, 08:54:04 PM »

All that seems very confusing. I guess I should keep my appointment at the dealership on Monday.

Thanks for the advice.

Lisa
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GoddessShip
Guest
« Reply #8 on: July 25, 2003, 07:34:17 AM »

I hear you LISA Smiley  
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