Wiper System & Washer System Cadillac XLR I

Fastener Tightening Specifications

Fastener Tightening Specifications

Scheme 1

Scheme 2

Scheme 3

Scheme 4

Scheme 5

Scheme 6

Scheme 7

Wiper/Washer Connector End Views

Headlamp Washer Fluid Pump

Scheme 8

Wiper/Washer Connector End Views

Outside Moisture Sensor

Scheme 9

Wiper/Washer Connector End Views

Windshield Washer Fluid Level Switch

Scheme 10

Wiper/Washer Connector End Views

Windshield Washer Fluid Pump

Scheme 11

Wiper/Washer Connector End Views

Windshield Wiper Motor

Windshield Wiper Motor

Wiper/Washer Connector End Views

Windshield Wiper Motor

Diagnostic Starting Point - Wiper/Washer Systems

Begin the system diagnosis with Diagnostic System Check - Vehicle . The Diagnostic System Check - Vehicle will provide the following information

1. The identification of the control modules which command the system
2. The ability of the control modules to communicate through the serial data circuit
3. The identification of any stored diagnostic trouble codes (DTCs) and their status

The use of the Diagnostic System Check - Vehicle will identify the correct procedure for diagnosing the system and where the procedure is located.

Scan Tool Output Controls

Scan Tool Output Controls

Scan Tool Data List

BCM Data

IPC Data

Circuit Description

The body control module (BCM) provides a high side drive output that controls the headlamp washer relay.

DTC Descriptor

This diagnostic procedure supports the following DTC

DTC B3810 Headlamp Washer Relay Circuit

DTC B3810

Conditions for Running the DTC

The only requirements are valid operating voltage and ground.

Conditions for Setting the DTC

All of the following conditions exist for more than 1 second

B3810 02

The BCM detects a short to ground in headlamp washer relay control when output is active.

B3810 05

The BCM detects a short to battery or an open in headlamp washer relay control when output is inactive.

The BCM disables the headlamp washer function.

Conditions for Clearing the DTC

1. A current DTC clears when the malfunction is no longer present.
2. A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

1. 2: During the headlamp washer fluid pump relay operation, listen for an audible click. Command the ON and the OFF states. Repeat the commands as necessary.
2. 3: Verifies that the BCM is providing voltage to the headlamp washer fluid pump relay.
3. 4: Tests for an open in the ground circuit to the headlamp washer fluid pump relay.
4. 5: Tests for constant voltage to the headlamp washer fluid pump relay.
5. 6: Test the headlamp washer fluid pump relay control circuit for a short to ground or open.

DTC B3810

Symptoms - Wiper/Washer Systems

1. «Wiper/Washer System Description and Operation»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system)
2. «Headlamp Washer System Description and Operation»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system)

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the Windshield Wiper/Washer System. Refer to «Checking Aftermarket Accessories»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__checking-aftermarket-accessories) .
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
3. Inspect the washer fluid reservoir for the proper fluid level.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Low Washer Fluid Indicator Malfunction»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system__low-washer-fluid-indicator-malfunction)
2. «Washers Always On»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system__washers-always-on)
3. «Washers Inoperative»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system__washers-inoperative)
4. «Wipers Always On»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system__wipers-always-on)
5. «Wipers Inoperative - All Modes»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system__wipers-inoperative-all-modes)
6. «Wipers Inoperative - One or More Modes»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system__wipers-inoperative-one-or-more)
7. «Headlamp Washers Inoperative»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system__headlamp-washers-inoperative)
8. «Headlamp Washers Always On»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system__headlamp-washers-always-on)

Low Washer Fluid Indicator Malfunction

Low Washer Fluid Indicator Malfunction

Washers Always On

Washers Always On

Washers Inoperative

Washers Inoperative

Wipers Always On

Wipers Always On

Wipers Inoperative - All Modes

Wipers Inoperative - All Modes

Wipers Inoperative - One or More Modes

Wipers Inoperative - One or More Modes

Headlamp Washers Inoperative

Headlamp Washers Inoperative

Headlamp Washers Always On

Headlamp Washers Always On

Wiper Arm Tip Pressure Check

1. Remove the wiper blade from the arm. Refer to «Windshield Wiper Blade Replacement»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Attach a scale to the wiper arm tip and measure the force required to lift the wiper arm perpendicular to the windshield to the normal working height of the wiper arm (the height with the blade attached). The force required should be 9.8 newtons (35 ounces) for the driver side arm, and 7.8 newtons (28 ounces) for the passenger side.
3. Replace the wiper arm if tip pressure is not within specifications. Refer to «Windshield Wiper Arm Replacement»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system) .

Scheme 12

Remove the wiper blade from the arm. Refer to Windshield Wiper Blade Replacement .

Look down the length of the wiper blade element. The rubber part of the wiper blade element (2) that contacts the glass, must be on the center line of the wiper blade, plus or minus 15 degrees (1).

Removal Procedure

1. Open the hood.
2. Remove the plastic retainer (1) from the upper neck of the washer solvent container filler tube (2). The filler is located next to the master cylinder.
3. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) . IMPORTANT: Ensure that the hoist is clear of the left front fender, to allow the lower fender to be moved away from the chassis for clearance.
4. Remove the left front wheel. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .
5. Remove the left front, lower wheelhouse splash shield fasteners (1, 2, 3). Note the position of the fender for installation alignment.
6. Disconnect the output hose (4) from the washer pump. Drain the contents into a suitable container.
7. Disconnect the headlamp washer output hose (1) by sliding the lock (5) and pulling off the hose.
8. Disconnect the electrical connectors (3) from both washer pumps, and the level sensor.
9. Remove the washer solvent container mounting bolts (1, 2).
10. Remove the washer solvent container. Hold the fender away for clearance.

Installation Procedure

1. Transfer washer pumps and level sensor to replacement container.
2. Place the washer solvent container into mounting position.
3. Install the washer solvent container mounting bolts (2). Tighten: Tighten the screws to 11 N.m (97 lb in).
4. Connect the electrical connectors (3) to the washer pumps, and to the level sensor.
5. Connect the washer pump output hose (4) to the pump.
6. Connect the headlamp washer output hose (1) to the washer pump. Seat the slide-lock (5) hose clamp.
7. Align the fender, and install the left front lower wheelhouse splash shield, and fasteners (1, 2, 3).
8. Install the left front wheel. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .
9. Lower the vehicle.
10. Install a new plastic retainer onto the washer solvent container fill tube.
11. Refill the washer solvent container. Inspect the operation of the headlamp washer pump Inspect the operation of the windshield washer pump Inspect the operation of the level sensor and warning lamp

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) . IMPORTANT: Ensure that the hoist is clear of the left front fender to allow the lower fender to be moved away for access to the washer container.
2. Remove the left front wheel. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .
3. Remove the left front lower wheelhouse splash shield fasteners (1, 2, 3) at the rear of the wheelhouse.
4. Remove the shield.
5. Disconnect the output hose (4) from the washer pump. Drain the contents into a suitable container.
6. Disconnect the electrical connector from the level sensor (2).
7. Remove the washer solvent container level sensor (2) by twisting the sensor out of the washer solvent container.

1. Install the level sensor rubber grommet into the washer solvent container.
2. Lubricate the sensor body and grommet with washer fluid, to aid in installation.
3. Twist and insert the sensor body through the grommet until the sensor is seated as originally positioned.
4. Connect the electrical connector (3) to the level sensor (2).
5. Align and install the left front lower wheelhouse (1, 2, 3) splash shield.
6. Install the left front wheel. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .
7. Lower the vehicle.
8. Refill the washer solvent container.
9. Inspect the operation of the pumps and the level sensor for leaks.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) . IMPORTANT: Ensure that the hoist is clear of the left front fender, to allow the lower fender to be moved away from the body for clearance.
2. Remove the left front wheel. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .
3. Remove the left front lower wheelhouse splash shield fasteners (1, 2, 3) at the rear of the wheelhouse.
4. Disconnect the output hose (4) from the washer pump, and drain the contents into a suitable container.
5. Disconnect the electrical connector (3) from the washer pump.
6. Remove the washer pump by twisting the pump out of the washer solvent container.

1. Install the washer pump rubber grommet into the washer solvent container.
2. Lubricate the pump body and grommet with washer fluid to aid in installation.
3. Insert the pump body through the grommet until the pump is seated as originally positioned.
4. Connect the electrical connector (3) to the washer pump.
5. Connect the washer pump output hose (4) to the washer pump.
6. Lower the vehicle.
7. Refill the washer solvent container.
8. Inspect the operation of the pumps and level sensor, also for leaks.
9. Align the fender to the body, and install the left front lower wheelhouse splash shield and fasteners (1, 2, 3).
10. Install the left front wheel. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) . IMPORTANT: Ensure that the hoist is clear of the left front fender, to allow the lower fender to be moved away from the body for clearance.
2. Remove the left front wheel. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .
3. Remove the left front lower wheelhouse splash shield fasteners (1, 2, 3) from the rear of the wheelhouse. Note the position of the fender for installation alignment.
4. Disconnect the output hose (4) from the lower mounted windshield washer pump. Drain the contents into a suitable container.
5. Disconnect the headlamp washer pump output hose (1) by disengaging the slide lock (5), and pulling the hose off.
6. Disconnect the electrical connector from the headlamp washer pump.
7. Twist the washer pump out of the washer solvent container, and remove.

1. Dampen the headlamp washer pump body rubber grommet.
2. Insert the pump through the grommet until the pump is seated as originally oriented.
3. Connect the electrical connector to the headlamp washer pump.
4. Connect the headlamp washer pump output (1) hose to the pump. Secure the sliding lock (5).
5. Connect the output hose (4) from the lower mounted windshield washer pump.
6. Lower the vehicle.
7. Refill the washer solvent container.
8. Inspect the operation of the washer pumps and the level sensor, and for leaks.
9. Align the fender, and install the fasteners (1, 2, 3) to the left front lower wheelhouse splash shield.
10. Install the left front wheel. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .

1. Remove the fasteners (1, 3) and push-pins (2) from the forward wheelhouse splash shield (4) to access the underside of the bumper cover.
2. Slide the hose lock connector (4) at the headlamp washer (2). Disconnect the hose.
3. Remove the retaining clip (3) from the headlamp washer.
4. Remove the headlamp washer (2) from the topside of the bumper cover (1).

1. Install the headlamp washer to the topside of the bumper cover.
2. Install the retaining clip (3) to the headlamp washer (2) at the underside of the bumper cover (1).
3. Connect the hose to the headlamp washer. Slide the lock connector (4) to the closed position.
4. Install the wheelhouse splash shield (4) and fasteners (1, 2, 3) to the forward part of the wheelhouse. Tighten: Tighten the threaded fasteners to 2 N.m (18 lb in).
5. Inspect the washer for leaks. Verify the operation of the washer.

Scheme 13

1. Remove the forward wheelhouse fasteners (1, 2, 3) and the splash shield (4) to access the underside of the bumper cover.
2. Slide the hose lock connector (4) at the headlamp washer supply hose, and disconnect the coupling.

1. Connect the headlamp washer supply hose to the headlamp washer. Slide the lock connector (4) to the closed position.
2. Verify the operation of the washer. Inspect the washer for leaks.
3. Install the wheelhouse splash shield (4) and fasteners (1, 2, 3) to the forward part of the wheelhouse. Tighten: Tighten the threaded fasteners to 2 N.m (18 lb in).

1. Open the hood.
2. Disconnect the washer pump hose (5) from the driver side air inlet grille.
3. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) . IMPORTANT: Ensure that the hoist is clear of the left front fender, to allow the lower fender to be moved away from the body for clearance.
4. Remove the left front wheel. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .
5. Remove the left front lower wheelhouse splash shield fasteners (1, 2, 3) at the rear of the wheelhouse.
6. Disconnect the washer pump output hose (4) by twisting the hose away from the washer pump.

1. Connect the washer pump outlet hose (4) to the pump (3).
2. Lower the vehicle.
3. Connect the upper washer hose connection (5)at the air inlet grille.
4. Inspect the operation of the pumps and the level sensor, and for leaks.
5. Align the lower fender to the body, and install the lower wheelhouse splash shield and fasteners (1, 2, 3).
6. Install the left front wheel. Refer to «Tire and Wheel Removal and Installation»(/cadillac/xlr/i-2003-2009/remont/wheel-tire-system/#tires-and-wheels) .

1. Open the hood.
2. Turn the ignition switch to the ACCY position.
3. Turn the wiper switch to the DELAY position.
4. Turn the ignition switch OFF when the wiper arms are in the mid-wipe position.
5. Place a piece of masking tape (5) onto the windshield at the tip of each wiper blade (6) to aid in the wiper arm reinstallation.
6. Disconnect the washer hose (3) from the air inlet grille panel.
7. Remove the wiper arm nut cover (1).
8. Remove the wiper arm nut (2).
9. Firmly grasp the wiper arm at the hinged joint. Apply a rocking motion toward the windshield to loosen the arm from the wiper shaft (4).
10. Remove the wiper arm.
11. Remove the wiper blade (6) from the wiper arm. Refer to «Windshield Wiper Blade Replacement»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system) .

1. Install the wiper blade (6) onto the wiper arm. Refer to «Windshield Wiper Blade Replacement»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Inspect the wiper transmission shaft (4) and wiper arm splines for corrosion, clean if necessary.
3. Position the tip of the wiper blade (6) to the marks made on the windshield with masking tape (5).
4. Install the wiper arm onto the wiper transmission (4) splined shaft.
5. Install the wiper arm nut (2). Tighten: Tighten the nut (2) to 29 N.m (21 lb ft).
6. Install the wiper arm nut cover (1).
7. Connect the washer hose (3) to the air inlet grille panel.
8. Remove the masking tape (5) from the windshield.
9. Inspect the wipers for proper operation.

1. Turn the ignition switch to the ACCY position.
2. Turn the wiper switch to the DELAY position.
3. Turn the ignition OFF when the wipers are in the mid-wipe position.
4. Pull up on the wiper blade release tang, and slide the wiper blade out from the inside radius of the wiper arm.
5. Remove the wiper blade from the wiper arm, by guiding it out through the opening in the blade.

1. Install the hook of the wiper arm through the opening in the wiper blade.
2. Position the wiper blade pivot into the inside radius of the wiper arm hook.
3. Press the wiper blade pivot into the wiper arm hook until the pivot locks into the wiper arm.
4. Inspect the wipers for proper operation.

1. Remove the wiper blade from the wiper arm. Refer to «Windshield Wiper Blade Replacement»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. The wiper blade element (4) has two notches at one end which are engaged by the bottom claw set (3) of the wiper blade (1). At the notched end of the wiper blade (2), pull the blade element from the wiper blade (1).

Scheme 14

1. Starting at the heel end of the wiper blade slide the wiper blade element, notched end last, into the wiper blade claw sets (1).
2. Ensure that the 2 element notches are engaged by the last claw set, and that all the other claws, (2) and (3), are properly engaged in the slots of the element (1) on both sides.
3. Install the wiper blade onto the wiper arm. Refer to «Windshield Wiper Blade Replacement»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system) .

Wiper Motor Cover Replacement

Refer to Windshield Wiper Motor Replacement .

Tools Required

1. J 39232 Wiper Linkage Separator
2. J 39529 Wiper Linkage Installer

1. Remove the air inlet grille panel. Refer to «Air Inlet Grille Panel Replacement»(/cadillac/xlr/i-2003-2009/remont/exterior-body-panels/#body-front-end) in Body Front End.
2. Using the J 39232 , disconnect the wiper transmission from the wiper motor crank arm to aid in the removal of the wiper drive system module.
3. Remove the wiper drive system module screws (1).
4. Remove the wiper drive system module from the plenum to gain access to the wiper motor electrical connector.
5. Disconnect the wiper motor electrical connector.
6. Remove the wiper drive system module from the vehicle.

1. Position the wiper drive system module to the vehicle.
2. Connect the wiper motor electrical connector.
3. Install the wiper drive system module into the plenum.
4. Install the wiper drive system module screws (1). Tighten: Tighten the screws to 8 N.m (71 lb in).
5. Using the J 39529 , connect the wiper transmission to the wiper motor crank arm.
6. Install the air inlet grille panel. Refer to «Air Inlet Grille Panel Replacement»(/cadillac/xlr/i-2003-2009/remont/exterior-body-panels/#body-front-end) in Body Front End.
7. Inspect the wipers for proper operation.

1. Remove the air inlet grille panel. Refer to «Air Inlet Grille Panel Replacement»(/cadillac/xlr/i-2003-2009/remont/exterior-body-panels/#body-front-end) in Body Front End.
2. Remove the wiper drive system module. Refer to «Wiper Drive System Module Replacement»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system) .
3. Remove the wiper motor crank arm. Refer to «Wiper Motor Crank Arm Replacement»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system__wiper-motor-crank-arm-replacement) .
4. Remove the wiper motor mounting screws.
5. Remove the wiper motor from the wiper motor module.

1. Position the wiper motor to the wiper motor module.
2. Install the wiper motor screws. Tighten: Tighten the screws to 10 N.m (89 lb in).
3. Install the wiper motor crank arm. Refer to «Wiper Motor Crank Arm Replacement»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system__wiper-motor-crank-arm-replacement) .
4. Install the wiper drive system module. Refer to «Wiper Drive System Module Replacement»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system) .
5. Install the air inlet grille panel. Refer to «Air Inlet Grille Panel Replacement»(/cadillac/xlr/i-2003-2009/remont/exterior-body-panels/#body-front-end) in Body Front End.
6. Inspect the wipers for proper operation.

Windshield Wiper Transmission Replacement

Tools Required

1. J 39232 Wiper Linkage Separator
2. J 39529 Wiper Linkage Installer

1. Remove the air inlet grille panel. Refer to «Air Inlet Grille Panel Replacement»(/cadillac/xlr/i-2003-2009/remont/exterior-body-panels/#body-front-end) in Body Front End.
2. Remove the wiper drive system module. Refer to «Wiper Drive System Module Replacement»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system) .
3. Using the J 39232 , disconnect the wiper transmission from the wiper motor crank arm.
4. Remove the wiper transmission screws.
5. Remove the wiper transmission from the wiper motor module assembly.

1. Position the wiper transmission to the wiper motor module assembly.
2. Install the wiper transmission screws. Tighten: Tighten the screws to 10 N.m (89 lb in).
3. Using the J 39529 , connect the wiper transmission to the wiper motor crank arm.
4. Install the wiper drive system module. Refer to «Wiper Drive System Module Replacement»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system) .
5. Install the air inlet grille panel. Refer to «Air Inlet Grille Panel Replacement»(/cadillac/xlr/i-2003-2009/remont/exterior-body-panels/#body-front-end) in Body Front End.
6. Install the wiper arms. Refer to «Windshield Wiper Arm Replacement»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system) .

Wiper Motor Crank Arm Replacement

Refer to Windshield Wiper Motor Replacement .

1. Remove the trim cover from the windshield outside moisture sensor.
2. Release the windshield outside moisture sensor coupler retaining clips.
3. Remove the windshield outside moisture sensor from the windshield coupler.
4. Disconnect the windshield outside moisture sensor electrical connector.

1. Connect the windshield outside moisture sensor electrical connector.
2. Position the windshield outside moisture sensor to the windshield coupler.
3. Fasten the windshield coupler retainer clips.
4. Position the trim cover to the windshield outside moisture sensor.
5. Press the trim cover inward to secure the trim cover to the windshield outside moisture sensor.

Wiper Chatter Repair

Some vehicles may exhibit a condition where the windshield wiper blades chatter or wipe unevenly. Several different conditions can cause wiper blade chatter. To completely repair wiper blade chatter, all of the following should be checked and repaired as necessary.

1. The windshield must be clean. Refer to «Windshield Glass Cleaning»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system__windshield-glass-cleaning) .
2. The wiper blade element must be clean. Refer to «Blade Element Cleaning»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system__blade-element-cleaning) .
3. The wiper arm tip pressure must be within specifications. Refer to «Wiper Arm Tip Pressure Check»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system__wiper-arm-tip-pressure-check) .
4. The wiper blade element set must be within specifications. Refer to «Wiper Blade Element Check»(/cadillac/xlr/i-2003-2009/remont/wiperwasher-systems/#wiper-system-washer-system) .

Windshield Glass Cleaning

Clean the windshield with windshield cleaner, GM P/N 1050011 (Canadian P/N 992727) or equivalent. The cleaner should not harm the paint finish or scratch the glass. The glass is clean when the water no longer beads, but sheets across the entire glass surface.

Blade Element Cleaning

1. Lift the blade off the windshield.
2. Clean the element with a cloth saturated in full strength washer solvent.
3. Rinse the blade with water.
4. Lower the blade to the windshield.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the steering column bracket. Refer to «Steering Column Bracket Replacement»(/cadillac/xlr/i-2003-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages, and Console.
3. Remove the steering column trim covers. Refer to «Steering Column Trim Covers Replacement»(/cadillac/xlr/i-2003-2009/remont/steering-column-switches/#steering-wheel-steering-column) in Steering Wheel and Column.
4. Remove the wire harness assembly from the wire restraint clips (1).
5. Disconnect the wire connector.
6. Disconnect the windshield wiper and washer switch assembly.
7. Remove the switch assembly in the following manner. Press on the locking tabs of the switch assembly. Pull the switch assembly out of the switch mounting bracket.
8. Remove the 2 pan head tapping screws (1).
9. Remove the switch mounting bracket (2).
10. Remove the turn signal cancel cam and steering shaft upper bearing spring. Refer to «Turn Signal Cancel Cam and Steering Shaft Upper Bearing Spring Replacement»(/cadillac/xlr/i-2003-2009/remont/steering-column-switches/#steering-wheel-steering-column) .
11. Remove the turn signal and multifunction switch assembly only. Refer to «Turn Signal Multifunction Switch Replacement»(/cadillac/xlr/i-2003-2009/remont/steering-column-switches/#steering-wheel-steering-column) .
12. Slide the switch mounting bracket off of the steering column shaft assembly.

1. Install the side mounted switch mounting bracket (2) to the steering column tilt head assembly. If not a side mounted bracket go to step 3.
2. Install the 2 pan head tapping screws (1). Tighten: Tighten the screws to 7 N.m (62 lb in).
3. To install the windshield washer and wiper switch assembly go to step 7.
4. Slide the switch mounting bracket onto the steering column shaft assembly.
5. Install the turn signal and multifunction switch assembly only. Refer to «Turn Signal Multifunction Switch Replacement»(/cadillac/xlr/i-2003-2009/remont/steering-column-switches/#steering-wheel-steering-column) .
6. Install the turn signal cancel cam and steering shaft upper bearing spring. Refer to «Turn Signal Cancel Cam and Steering Shaft Upper Bearing Spring Replacement»(/cadillac/xlr/i-2003-2009/remont/steering-column-switches/#steering-wheel-steering-column) .
7. If necessary, install the switch assembly into the switch mounting bracket so that the locking tabs snap into place.
8. Connect the wire harness assembly.
9. Install new wire harness straps.
10. Install the wire harness assembly into the wire restraint clips (1).
11. Install the steering column trim covers. Refer to «Steering Column Trim Covers Replacement»(/cadillac/xlr/i-2003-2009/remont/steering-column-switches/#steering-wheel-steering-column) in Steering Wheel and Column.
12. Install the steering column bracket. Refer to «Steering Column Bracket Replacement»(/cadillac/xlr/i-2003-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages, and Console.
13. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

Windshield Wiper/Washer System Components

The windshield wiper/washer system consists of the following components

1. Outside moisture sensor
2. Windshield wiper/washer switch
3. Windshield wiper motor
4. Windshield washer fluid pump
5. Windshield washer fluid level switch
6. Washer fluid pump relay
7. Wiper RUN/ACC relay
8. Wiper ON/OFF relay
9. Wiper HI/LO relay
10. Wiper 30A fuse
11. W/S WASH 15A fuse
12. RUN/ACCESSORY power 10A fuse

Windshield Wiper/Washer System Operation

The outside moisture sensor controls wiper motor operation for all low speed modes. The high speed mode maybe controlled by the both windshield wiper/washer switch and the outside moisture sensor. 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 outside moisture sensor provides the power for controlling the wiper motor. The MIST, LOW, and DELAY modes are controlled by the windshield wiper/washer switch through a series of internal resistors, and the switch position determines the point on the resistor assembly where the reference voltage is applied. For these modes, the windshield wiper switch signal circuit supplies the signal from the switch assembly to the outside moisture sensor which determines the operating mode. Windshield wiper motor high speed operation is controlled by the windshield wiper/washer switch and the outside moisture sensor through the windshield wiper switch high speed signal circuit. The low speed modes energize the wiper ON/OFF relay and the voltage is supplied through the wiper HI/LO relay to the windshield wiper motor. At HIGH position the wiper HI/LO is energized and supplies voltage to the high speed circuit of the windshield wiper motor.

The windshield washer fluid pump is controlled by the windshield wiper/washer switch through the windshield washer fluid pump relay. The windshield washer fluid pump relay coil and switch are supplied battery positive voltage, and during the windshield window wash modes the windshield wiper/washer switch grounds the washer fluid pump relay control circuit energizing the relay. During the windshield washer operation the switch signals the outside moisture sensor also, to provide low speed wipers operation.

The outside moisture sensor provides automatic operation for low and high speed when the windshield wiper/washer switch is in DELAY position. The outside moisture sensor is an electronic module that uses infrared radiation to determine the level of windshield visibility for the driver, and commands the wiper motor/controller assembly to drive the wipers to maintain a pre-selected level of visibility.

Windshield Wiper/Washer Signals to the BCM

The BCM receive two signals indicating the operation of windshield wipers and washer. The windshield wiper switch signal 2 circuit is used by the BCM to turn ON the headlamps. The windshield washer switch signal is used by BCM to control the headlamp washers.

Low Washer Fluid Message

The Low Washer Fluid message is controlled by the instrument panel cluster using an input from the windshield washer fluid level switch. The windshield washer fluid level signal circuit is supplied ignition voltage through a resistor then monitored within the instrument cluster. The windshield washer fluid level switch is normally open so the instrument cluster detects ignition voltage on the windshield washer fluid level signal circuit whenever the washer fluid level is not low. When the washer fluid reaches the point where the driver should be informed that the washer fluid is low, the windshield washer fluid level switch closes. When the windshield washer fluid level switch is closed the windshield washer fluid level signal circuit voltage is pulled low, and the instrument panel displays the Low Washer Fluid message on the driver information center. In order to prevent the Low Washer Fluid message from being displayed while sloshing is occurring in the washer fluid container, the instrument cluster is programed with a 1 minute delay before displaying the Low Washer Fluid message during an ignition cycle.

Headlamp Washer System Components

The headlamp washer system consists of the following components

1. Headlamp washer relay
2. Headlamp washer fluid pump
3. HDLP WASH 20A fuse
4. Windshield wiper/washer switch
5. BCM

Headlamp Washer System Operation

Battery voltage is supplied to the headlamp washer relay switched input. The BCM controls the operation of the headlamp washer relay. The headlamps need to be in ON position to allow the headlamp washer operation. At every fourth operation of the windshield washer a headlamp wash cycle is initiated. A headlamp wash cycle consists of a prewash, then a pause, and then a wash operation.

Special Tools

Special Tools Illustration Tool Number/ Description J 39232 Wiper Transmission Separator J 39529 Wiper Linkage Installer

Scheme 15

Scheme 16

See also:
• Diagnostic System Check - Vehicle
• Testing for Intermittent Conditions and Poor Connections
• Circuit Testing
• Wiring Repairs
• Connector Repairs
• Control Module References
• Checking Aftermarket Accessories
• Relay Replacement (Within an Electrical Center)
• Lifting and Jacking the Vehicle
• Tire and Wheel Removal and Installation
• Fastener Notice
• Air Inlet Grille Panel Replacement
• SIR Caution
• SIR Disabling and Enabling
• Steering Column Bracket Replacement
• Steering Column Trim Covers Replacement
• Wiper/Washer Schematics
• Low Washer Fluid Indicator Malfunction
• Washers Always On
• Washers Inoperative
• Wipers Always On
• Wipers Inoperative - All Modes
• Wipers Inoperative - One or More Modes
• Headlamp Washers Inoperative
• Headlamp Washers Always On
• Wiper Motor Crank Arm Replacement
• Windshield Glass Cleaning
• Blade Element Cleaning
• Wiper Arm Tip Pressure Check