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Contents Section: Wiper/washer Systems All sections

Wiper System and Washer System Cadillac DeVille Concours I final

Wiper/washer Systems 4 illustrations ~5239 words

DESCRIPTION & OPERATION

CAUTIONTo prevent scratching, wet the windshield before turning on wipers.

System uses a 2-speed wiper motor. A washer motor is attached to the washer fluid reservoir. A circuit board on the wiper motor cover controls power to the washer motor. (Scheme 1)

On vehicles with pulse (intermittent) system, if wiper switch is in DELAY position, a time delay occurs between wiping sweeps (on vehicles with variable delay, time delay may vary between wiper sweeps). The circuit board on the wiper motor cover controls the delay function.

Some vehicles may be equipped with a RAINSENSE(R) wiper system. System automatically operates wipers when moisture is sensed on windshield by RAINSENSE(R) module. System operates only when wiper switch is in one of the AUTO DELAY positions. Speed and duration of wipers is controlled electronically by RAINSENSE(R) module and wiper motor cover. RAINSENSE(R) module is mounted on passenger interior side of front windshield near rearview mirror.

Scheme 1

Scheme 1
Scheme 1

COMPONENT LOCATIONS

ComponentLocation
Connector C202Under Left Instrument Panel Near Base Of Steering Column
Ground G101Left Side Of Engine Compartment, On Radiator Support
Ground G204Behind Left Front Kick Panel
Ground G400Under Left Side Of Rear Seat
RAINSENSE(R) ModuleNear Or Attached To Base Of Rearview Mirror
Rear Comparment Fuse BlockLeft Front Of Trunk On Electronics Bay
Underhood Fuse BlockLeft Side Of Engine Compartment, Near Strut Tower
Underhood Relay CenterLeft Side Engine Compartment, Near Strut Tower

COMPONENT LOCATIONS

WIPER ARMS

  1. Park position distance between upper edge of each wiper arm and bottom of parking ramp should be 1" (25.4 mm) below stop surface of park ramp. Move wipers to outer wipe position (top of sweep). Distance between left wiper arm and vertical edge of windshield should be 3 1/16" (78 mm) maximum.
  2. While wipers are operating, wiping pattern of right blade should overlap wiping pattern of left blade. If wiper arms are not positioned as specified, remove and reposition wiper arms.

Without RAINSENSE(R)

  1. Turn ignition switch to RUN position. Press wiper switch to ON. Wipers should operate at low speed. Washer should spray as long as washer switch is held in ON position. After releasing switch, washer stops and wipers return to park position after 2-4 sweeps.
  2. Set wiper switch to DELAY (pulse mode). Wipers should make one complete sweep, pause for 1-22 seconds before making next sweep. Pause time is determined by delay range position.
  3. Set wiper switch to DELAY (pulse mode). Press washer switch ON. Washer should spray as long as washer switch is held ON. Wipers run at low speed while spraying, and continue for 2-4 sweeps after washer switch is released. Wipers then return to pulse operation.
  4. Set wiper switch to LOW position. Wipers run continuously at low speed. Set wiper switch to HIGH position. Wipers run at faster speed. Set wiper switch to OFF position. Wipers return to park position at low speed.
  5. Set wiper switch to MIST position. Wipers make one complete sweep, then return to park position. If wiper system does not function properly, perform «PRELIMINARY INSPECTION»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__preliminary-inspection) .

With RAINSENSE(R)

  1. Turn ignition switch to RUN position. Press washer switch on for less than one second. Washer should spray and continue to spray for 2.5 seconds after switch is released. Wipers run at low speed while spraying, and continue run at low speed for 2 sweeps after wash cycle is complete, then return to park position.
  2. Turn wiper switch to LOW position. Wipers run continuously at low speed. Turn wiper switch to HIGH position. Wipers run continuously at faster speed. Turn wiper switch to OFF position. Wipers return to park position at low speed.
  3. Turn wiper switch to MIST position and release. Wipers make one complete sweep and return to park position. Turn wiper switch to minimum sensitivity (position closest to OFF), AUTO DELAY position. Single wipe should occur.
  4. Turn wiper switch to next higher sensitivity AUTO DELAY position. Repeat this step for all sensitivity positions. Single wipe should occur every time wiper switch is moved to another automatic position. If wiper system does not function properly, perform «PRELIMINARY INSPECTION»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__preliminary-inspection) .
  5. Turn wiper switch to minimum sensitivity, AUTO DELAY position. Spray RAINSENSE(R) module heavily with water for 5 seconds using spray bottle or other suitable method. Wipers should run for 15 seconds or less. Wipers should NOT have any continuous wiping after 15 seconds. If wipers operate continuously for more than 15 seconds, RAINSENSE(R) module is faulty. See «RAINSENSE(R) MODULE(R)»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION.
  6. Dry windshield using paper towels. Turn wiper switch to maximum sensitivity (position closest to LOW), AUTO DELAY position. Spray RAINSENSE(R) module heavily with water for 5 seconds using spray bottle or other suitable method. Wipers should run for 10 seconds or more. If wipers run in pulse mode within initial 10 seconds or stop running in 9 seconds or less, RAINSENSE(R) module is faulty. See «RAINSENSE(R) MODULE»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION.

PRELIMINARY INSPECTION

Before performing any test on wiper/washer system, check the following items to eliminate common problems

  1. Check wiper/washer related fuses.
  2. Check washer reservoir level.
  3. Check for kinked or damaged washer hoses.
  4. Check for damaged washer pump.
  5. Check for damaged, loose or corroded connections.
  6. Check for damaged wiring harness.
  7. Ensure washer nozzles are not plugged.
  8. Check for binding or damaged wiper arm linkage. Correct any obvious problems before continuing testing. If problem still exists, identify wiper/washer symptom and perform appropriate system test. See «SYMPTOM INDEX»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) table under SYSTEM TESTS.

SYSTEM TESTS

Note. Before performing any SYSTEM TESTS, perform SYSTEM CHECK under TROUBLESHOOTING.

SymptomPerform Test
Wipers Do Not Run In Any Mode1
Wipers Run At High Speed Only (Low Speed Inoperative)2
Wipers Run At Low Speed Only (High Speed Inoperative)3
Wipers Run Intermittently In Low Or High Speed4
Wipers Will Not Turn Off5
Wipers Cycle In & Out Of Park Position After Wipers Are Shut Off6
Pulse Delay Inoperative (Without RAINSENSE(R) system)7
Pulse Delay Inoperative (With RAINSENSE(R) System)8
Washer Will Not Operate9
Washer Will Not Shut Off (Pulse System)10

SYMPTOM INDEX

TEST 1: WIPERS DO NOT RUN IN ANY MODE

  1. Perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING. Go to next step.
  2. Check WIPERS fuse (30-amp) in underhood fuse block. See «COMPONENT LOCATIONS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__component-locations) . If fuse is open, go to next step. If fuse is okay, go to step 4 .
  3. Replace WIPERS fuse. Perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  4. Disconnect wiper/washer switch connector C202. See «COMPONENT LOCATIONS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__component-locations) . Turn ignition switch to RUN position. Connect test light between ground and wiper/washer switch connector C202, terminal E5 (Yellow wire). If test light illuminates, go to step 16 . If test light does not illuminate, go to next step.
  5. Using test light connected to ground, backprobe accessory relay connector terminal A1 (Orange wire). Accessory relay is located in underhood relay center. See «COMPONENT LOCATIONS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__component-locations) . If test light illuminates, go to next step. If test light does not illuminate, go to step 11 .
  6. Using test light connected to ground, backprobe accessory relay connector terminal A3 (Yellow wire). If test light illuminates, go to next step. If test light does not illuminate, go to step 12 .
  7. Connect test light between accessory relay connector terminals A3 (Yellow wire) and B1 (Black wire). If test light illuminates, go to next step. If test light does not illuminate, go to step 15 .
  8. Check for open or poor connection in Yellow wire between accessory relay connector terminal B3 and wiper/washer switch connector C202, terminal E5. See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . If open or poor connection is found, go to next step. If wiring and connection are okay, go to step 10 .
  9. Repair open or poor connection in Yellow wire between accessory relay connector terminal B3 and wiper/washer switch connector C202, terminal E5. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  10. Replace accessory relay. After replacing accessory relay, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  11. Check for open in Orange wire between underhood fuse block and underhood relay center connector terminal A1. See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . Repair as necessary. If Orange wire is okay, repair open in power feed circuit to underhood fuse block. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  12. Check ACC fuse (10-amp) located in rear compartment fuse block. See «COMPONENT LOCATIONS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__component-locations) . If fuse is open, go to next step. If fuse is okay, go to step 14 .
  13. Replace ACC fuse. After replacing fuse, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  14. Check for open in Yellow wire to accessory relay connector terminal A3. See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . Repair as necessary. If Yellow wire is okay, repair open in power feed circuit to rear compartment fuse block. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  15. Repair open in Black wire between underhood relay center connector terminal B1 and ground connection G204. See «COMPONENT LOCATIONS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__component-locations) and «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  16. Disconnect wiper motor 3-pin connector C2. Connect test light between battery voltage and wiper motor connector C2, terminal "C" (Black wire). If test light illuminates, go to step 18 . If test light does not illuminate, go to next step.
  17. Repair open in Black wire between wiper motor connector C2, terminal "C" and ground connection G101. See «COMPONENT LOCATIONS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__component-locations) and «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  18. Reconnect wiper/washer switch connector C202. Disconnect wiper motor 6-pin connector C1. On models equipped with RAINSENSE(R) system, connect test light between ground and wiper motor connector C1, terminal "H" (Dark Green wire). On models not equipped with RAINSENSE(R) system, connect test light between ground and wiper motor connector C1, terminal "C" (Dark Green/White wire). On all models, if test light illuminates, go to step 22 . If test light does not illuminate, go to next step.
  19. On models equipped with RAINSENSE(R) system, check for an open in Dark Green wire between wiper switch and wiper motor connector C1, terminal "H". On models not equipped with RAINSENSE(R) system, check for open in Dark Green/White wire between wiper switch and wiper motor connector C1, terminal "C". See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . On all models, if wiring is okay, go to step 21 . If wiring is open, go to next step.
  20. Repair open in Dark Green wire (models equipped with RAINSENSE(R) system) or Dark Green/White wire (models not equipped with RAINSENSE(R) system) between wiper switch and wiper motor connector C1. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  21. Replace wiper/washer switch. See «WIPER/WASHER SWITCH»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__wiperwasher-switch) under REMOVAL & INSTALLATION. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  22. Move wiper switch to HIGH position. Turn ignition switch to RUN position. Connect test light between ground and wiper motor connector C2, terminal "A" (Purple wire). If test light illuminates, go to step 25 . If test light does not illuminate, go to next step.
  23. Check for open in Purple wire between wiper motor connector C2 terminal "A" and wiper washer switch connector C202, terminal E8. See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . If Purple wire is open, go to next step. If Purple wire is okay, go to step 21 .
  24. Repair open in Purple wire between wiper motor connector C2, terminal "A" and wiper/washer switch connector C202, terminal E8. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  25. Using DVOM, check continuity of Yellow/Black wire between wiper motor connector C1, terminal "A" and wiper motor connector C2, terminal "B". If Yellow/Black wire is open, go to step 29 . If Yellow/Black wire is okay, go to next step.
  26. Check for poor connection at wiper motor connector C2, terminal "A" (Purple wire). If connection is okay, go to next step. If poor connection is found, go to step 28 .
  27. Replace wiper motor. See «WIPER MOTOR ASSEMBLY»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION.
  28. Repair poor connection at wiper motor connector C2, terminal "A" (Purple wire). After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  29. Using DVOM, check continuity of Yellow/Black wire between wiper motor connector C1, terminal "A" and wiper motor connector C2, terminal "B". If Yellow/Black wire is open, go to next step. If Yellow/Black wire is okay, go to step 21 .
  30. Repair open in Yellow/Black wire between wiper motor connector C1, terminal "A" and wiper motor connector C2, terminal "B". After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.

TEST 2: WIPERS RUN AT HIGH SPEED ONLY (LOW SPEED INOPERATIVE)

  1. Perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING. Go to next step.
  2. Disconnect wiper motor 6-pin connector C1. Turn ignition switch to RUN position. Turn wiper switch to LOW position. On models equipped with RAINSENSE(R) system, connect test light between ground and wiper motor connector C1, terminal "C" (Gray wire). On models not equipped with RAINSENSE(R) system, connect test light between ground and wiper motor connector C1, terminal "B" (Gray/Black wire). On all models, if test light illuminates, go to step 5 . If test light does not illuminate, go to next step.
  3. On models equipped with RAINSENSE(R) system, check for an open in Gray wire between wiper switch and wiper motor connector C1, terminal "C". On models not equipped with RAINSENSE(R) system, check for open in Gray/Black wire between wiper switch and wiper motor connector C1, terminal "B". See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . On all models, if wiring is okay, go to step 8 . If open in Gray or Gray/Black wire is found, go to next step.
  4. Repair open in Gray wire (models equipped with RAINSENSE(R) system) or Gray/Black wire (models not equipped with RAINSENSE(R) system) between wiper switch and wiper motor connector C1. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  5. On models equipped with RAINSENSE(R) system, connect test light between ground and wiper motor connector C1, terminal "H" (Dark Green wire). On models not equipped with RAINSENSE(R) system, connect test light between ground and wiper motor connector C1, terminal "C" (Dark Green/White wire). On all models, if test light illuminates, go to step 9 . If test light does not illuminate, go to next step.
  6. On models equipped with RAINSENSE(R) system, check for an open in Dark Green wire between wiper switch and wiper motor connector C1, terminal "H". On models not equipped with RAINSENSE(R) system, check for open in Dark Green/White wire between wiper switch and wiper motor connector C1, terminal "C". See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . On all models, if open in wiring is found, go to next step. If wiring is okay, go to step 8 .
  7. Repair open in Dark Green wire (models equipped with RAINSENSE(R) system) or Dark Green/White wire (models not equipped with RAINSENSE(R) system) between wiper switch and wiper motor connector C1. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  8. Replace wiper/washer switch. See «WIPER/WASHER SWITCH»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__wiperwasher-switch) under REMOVAL & INSTALLATION. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  9. Disconnect wiper motor 3-pin connector C2. Using DVOM, check continuity of Yellow wire (models equipped with RAINSENSE(R) system) or Yellow/Black wire (models not equipped with RAINSENSE(R) system) between wiper motor connector C1, terminal "A" and wiper motor connector C2, terminal "B". If wire is open, go to next step. If wire is okay, go to step 11 .
  10. Repair open in wire between wiper motor connector C1, terminal "A" and wiper motor connector C2, terminal "B". After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  11. Replace wiper motor cover. See «WIPER MOTOR COVER (CIRCUIT BOARD)»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION.

TEST 3: WIPERS RUN AT LOW SPEED ONLY (HIGH SPEED INOPERATIVE)

  1. Perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING. Go to next step.
  2. Disconnect wiper motor 3-pin connector C2. Turn ignition switch to RUN position. Turn wiper switch to HIGH position. Connect test light between ground and wiper motor 3-pin connector C2, terminal "A" (Purple wire). If test light illuminates, go to next step. If test light does not illuminate, go to step 6 .
  3. Check for poor connection at wiper motor connector C2. If poor connection is found, go to next step. If connection is okay, go to step 5 .
  4. Repair poor connection at wiper motor connector C2. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  5. Replace wiper motor. See «WIPER MOTOR ASSEMBLY»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  6. Check for open in Purple wire between wiper motor 3-pin connector C2, terminal "A" and wiper/washer switch connector C202, terminal E8. If Purple wire is open, go to next step. If Purple wire is okay, go to step 8 .
  7. Repair open in Purple wire between wiper motor 3-pin connector C2, terminal "A" and wiper/washer switch connector C202, terminal E8. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  8. Replace wiper/washer switch. See «WIPER/WASHER SWITCH»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__wiperwasher-switch) under REMOVAL & INSTALLATION. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.

TEST 4: WIPERS RUN INTERMITTENTLY IN LOW OR HIGH SPEED

  1. Perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING. Go to next step.
  2. Remove WIPERS fuse (30-amp) from underhood fuse block. See «COMPONENT LOCATIONS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__component-locations) . Connect ammeter (0-30 amp) across WIPERS fuse terminals. Turn ignition switch to RUN position. Turn wiper switch to LOW position. Observe lowest current draw while wipers are operating on dry glass (current draw will fluctuate). If lowest current draw is less than 3.5 amps, go to next step. If lowest current draw is more than 3.5 amps, go to step 4 .
  3. Replace wiper motor. See «WIPER MOTOR ASSEMBLY»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION. After replacing wiper motor, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  4. If lowest current draw is more than 6.5 amps, go to step 7 . If lowest current draw is less than 6.5 amps, go to next step.
  5. Check for intermittent poor connection in Yellow wire accessory relay and wiper switch connector C202, terminal E5. Check for intermittent poor connection in Black wire between ground connection G101 and wiper motor connector C2, terminal "C". Check for poor intermittent connection in wiring between wiper switch and wiper motor/cover. See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . If poor connection is found, go to next step. If all connections check okay, go to step 9 .
  6. Repair poor connection in affected circuit. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  7. Replace wiper blade elements. Repeat current draw test. If lowest current draw is still more than 6.5 amps, go to next step. If current draw is less than 6.5 amps, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  8. Disconnect wiper transmission from wiper motor crank arm. Repeat current draw test. If lowest current draw is still more than 6.5 amps, go to next step. If lowest current draw is less than 6.5 amps, go to step 10 .
  9. Replace wiper motor. See «WIPER MOTOR ASSEMBLY»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION. After replacing wiper motor, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  10. Wiper transmission assembly is binding. Repair or replace wiper transmission assembly. See . «WIPER DRIVE LINKAGE ASSEMBLY»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.

TEST 5: WIPERS WILL NOT SHUT OFF

  1. Perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING. Go to next step.
  2. Disconnect wiper motor 6-pin connector C1. Turn ignition switch to RUN position. Turn wiper switch to OFF position. On models equipped with RAINSENSE(R) system, use a DVOM to measure voltage between ground and wiper motor 6-pin connector C1, terminal "C" (Gray wire). On models not equipped with RAINSENSE(R) system, use a DVOM to measure voltage between ground and wiper motor 6-pin connector C1, terminal "B" (Gray/Black wire). On all models, if battery voltage exists, go to next step. If battery voltage does not exist, go to step 5 .
  3. Check for short to voltage in Gray or Gray/Black wire. See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . If Gray or Gray/Black wire circuit is shorted to ground, go to step 6 . If Gray or Gray/Black wire circuit is not shorted to ground, go to next step.
  4. Replace wiper/washer switch. See «WIPER/WASHER SWITCH»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__wiperwasher-switch) under REMOVAL & INSTALLATION. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  5. Disconnect wiper motor 3-pin connector C2. Using DVOM, measure voltage between ground and wiper motor 3-pin connector C2, terminal "A" (Purple wire). If battery voltage exists, go to step 7 . If battery voltage does not exist, go to step 8 .
  6. Repair short to voltage in Gray or Gray/Black wire. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  7. Repair short to voltage in Purple wire between wiper motor connector C2, terminal "A" wiper switch connector C202, terminal E8. See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  8. Repair short to voltage in Yellow wire (models equipped with RAINSENSE(R) system) or Yellow/Black wire (models not equipped with RAINSENSE(R) system) between wiper motor connector C1, terminal "A" and wiper motor connector C2, terminal "B". See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.

TEST 6: WIPERS CYCLE IN & OUT OF PARK POSITION AFTER WIPERS ARE SHUT OFF

If wipers do not operate in LOW position, go to TEST 2: WIPERS RUN AT HIGH SPEED ONLY (LOW SPEED INOPERATIVE) . If wipers operate in LOW position, replace wiper park switch. See WIPER PARK SWITCH under REMOVAL & INSTALLATION. If symptom still exists, replace wiper motor. See WIPER MOTOR ASSEMBLY under REMOVAL & INSTALLATION. After repair, perform SYSTEM CHECK under TROUBLE SHOOTING.

TEST 7: PULSE DELAY INOPERATIVE (PULSE SYSTEM)

  1. Perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING. Go to next step.
  2. Turn ignition switch to OFF position. Disconnect wiper/washer switch connector C202. Turn wiper switch to DELAY position. Using DVOM, measure resistance between wiper/washer switch connector C202 (switch side of connector) terminals E5 (Yellow wire) and E9 (Pink/Black wire). Move wiper switch through entire delay range. Resistance should increase from about 91 k/ohms to 1.2 megohms. If resistance is not as specified, go to next step. If resistance is as specified, go to step 4 .
  3. Replace wiper/washer switch. See «WIPER/WASHER SWITCH»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__wiperwasher-switch) under REMOVAL & INSTALLATION. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  4. Using DVOM, measure resistance between wiper/washer switch connector C202 (switch side of connector) terminals E5 (Yellow wire) and E6 (Gray wire). If resistance is more than 3 ohms, go to next step. If resistance is less than 3 ohms, go to step 6 .
  5. Replace wiper/washer switch. See «WIPER/WASHER SWITCH»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__wiperwasher-switch) under REMOVAL & INSTALLATION. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  6. Reconnect wiper/washer switch connector C202. Disconnect wiper motor 6-pin connector C1. Turn ignition switch to ON position. Move wiper switch to HIGH position. Using DVOM connected to ground, measure voltage at wiper motor connector C1, terminal "B" (Gray/Black wire). If battery voltage exists, go to step 8 . If battery voltage does not exist, go to next step.
  7. Repair poor connection or open in Gray/Black to wiper motor connector C1, terminal "B". See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  8. Using DVOM connected to ground, measure voltage at wiper motor connector C1, terminal "F" (Pink/Black wire). If battery voltage exists, go to step 10 . If battery voltage does not exist, go to next step.
  9. Repair poor connection or open in Pink/Black wire between wiper motor connector C1, terminal "F" and wiper/washer switch connector C202. terminal E9. See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  10. Replace wiper motor cover. See «WIPER MOTOR COVER (CIRCUIT BOARD)»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION.

TEST 8: PULSE DELAY INOPERATIVE (RAINSENSE(R) SYSTEM)

  1. Perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING. Go to next step.
  2. Disconnect RAINSENSE(R) module connector. Turn ignition switch to RUN position. Connect test light between terminals No. 8 (Yellow wire) and No. 7 (Black wire) of RAINSENSE(R) module connector. If test light illuminates, go to step 6 . If test light does not illuminate, go to next step.
  3. Connect test light between ground and RAINSENSE(R) module connector terminal No. 8 (Yellow wire). If test light illuminates, go to next step. If test light does not illuminate, go to step 5 .
  4. Repair open in Black wire between RAINSENSE(R) module connector terminal No. 7 and ground connection G400. See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) and «COMPONENT LOCATIONS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__component-locations) . After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  5. Repair open in Yellow wire to RAINSENSE(R) module connector terminal No. 8. See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  6. Disconnect wiper switch connector C202. Using DVOM, check continuity of Pink wire between wiper/washer switch connector C202, terminal E9 and RAINSENSE(R) module connector terminal No. 6. If continuity exists, go to step 8 . If continuity does not exist, go to next step.
  7. Repair open in Pink wire between wiper/washer switch connector C202, terminal E9 and RAINSENSE(R) module connector terminal No. 6. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  8. Reconnect RAINSENSE(R) module connector. Using a DVOM, measure resistance between terminals E5 (Yellow wire) and E9 (Pink wire) of wiper/washer switch connector C202 (switch side of connector). Move wiper switch through entire auto delay range. Resistance should increase from about 91 k/ohms to 1.2 megohms. If reading is as specified, go to next step. If reading is not as specified, go to step 10 .
  9. Set wiper switch to auto delay range. Using DVOM, measure resistance between terminals E5 (Yellow wire) and E6 (Gray wire) of wiper/washer switch connector C202 (switch side of connector). If resistance is 3 ohms or more, go to next step. If resistance is less than 3 ohms, go to step 11 .
  10. Replace wiper/washer switch. See «WIPER/WASHER SWITCH»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__wiperwasher-switch) under REMOVAL & INSTALLATION. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  11. Reconnect wiper/washer switch connector C202. Disconnect wiper motor 8-pin connector C1. Using DVOM, measure resistance of Light Green wire between RAINSENSE(R) module connector terminal No. 9 and wiper motor 8-pin connector C1, terminal "G". If resistance is 3 ohms or more, go to next step. If resistance is less than 3 ohms, go to step 13 .
  12. Repair open in Light Green wire between RAINSENSE(R) module connector terminal No. 9 and wiper motor 8-pin connector C1, terminal "G". See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  13. Using DVOM, measure resistance of Light Blue wire between RAINSENSE(R) module connector terminal No. 5 and wiper motor 8-pin connector C1, terminal "F". If resistance is 3 ohms or more, go to next step. If resistance is less than 3 ohms, go to step 15 .
  14. Repair open in Light Blue wire between RAINSENSE(R) module connector terminal No. 5 and wiper motor 8-pin connector C1, terminal "F". See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  15. Replace wiper motor cover (circuit board). See «WIPER MOTOR COVER (CIRCUIT BOARD)»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING. If symptom still exists, go to next step.
  16. Replace RAINSENSE(R) module. See «RAINSENSE(R) MODULE»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.

TEST 9: WASHER WILL NOT OPERATE

  1. Perform «PRELIMINARY INSPECTION»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__preliminary-inspection) under TROUBLE SHOOTING. If problem still persists after checking items listed, go to next step.
  2. Disconnect washer motor connector. Turn ignition switch to RUN position. Connect test light between terminals of washer motor connector. While observing test light, activate washer switch. If test light does not illuminate, go to next step. If test light illuminates, check for poor wiring connection at washer motor. If connection is okay, replace washer motor. See «WASHER PUMP MOTOR»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION.
  3. Connect test light between ground and washer motor connector terminal "A" (Red/Black wire). Activate washer switch. If test light does not illuminate, go to next step. If test light illuminates, check for open Dark Blue/White wire between washer motor connector terminal "B" and wiper motor connector C1, terminal "E". See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . If Dark Blue/White wire is okay, replace wiper motor. See «WIPER MOTOR ASSEMBLY»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION.
  4. Using test light connected to ground, backprobe wiper motor connector C1, terminal "D" (Red/Black wire). Activate washer switch. If test light does not illuminate, go to next step. If test light illuminates, repair open in Red/Black wire between wiper motor connector C1, terminal "D" and washer motor connector terminal "A". See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) .
  5. Using test light connected to ground, backprobe wiper/washer switch connector terminal E9. Activate washer switch. If test light illuminates, go to next step. If test light does not illuminate, replace wiper/washer switch. See «WIPER/WASHER SWITCH»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__wiperwasher-switch) under REMOVAL & INSTALLATION.
  6. Check for open Pink/Black wire between wiper/washer switch connector terminal E9 and RAINSENSE(R) module connector terminal No. 6. See «WIRING DIAGRAMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . If Pink/Black wire is okay, replace wiper motor cover. See «WIPER MOTOR COVER (CIRCUIT BOARD)»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION.

TEST 10: WASHER WILL NOT SHUT OFF (WITHOUT RAINSENSE(R) SYSTEM)

  1. Perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING. Go to next step.
  2. Disconnect wiper motor 6-pin connector C1. Turn ignition switch to RUN position. Turn wiper/washer switch to LOW position. Using test light connected to ground, backprobe wiper motor 6-pin connector C1, terminal "F" (Pink/Black wire). Momentarily activate washer switch while observing test light. If test light illuminates after washer switch is released, go to next step. If test light does not illuminate after releasing washer switch, go to step 4 .
  3. Replace wiper/washer switch. See «WIPER/WASHER SWITCH»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__wiperwasher-switch) under REMOVAL & INSTALLATION. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.
  4. Replace wiper motor cover (circuit board). See «WIPER MOTOR COVER (CIRCUIT BOARD)»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under REMOVAL & INSTALLATION. After repair, perform «SYSTEM CHECK»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) under TROUBLE SHOOTING.

REMOVAL & INSTALLATION

CAUTIONWhen battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.
  1. Using tape on outside of windshield, mark horizontal and vertical position of RAINSENSE(R) module. Disconnect electrical connector. Using heat gun with a maximum of 740 watts, at a distance of 6" (152 mm) or more from windshield, apply heat to module area of windshield in a circular motion. Twist module to remove from windshield.
  2. Cover instrument panel with protective cloth. Using a sharp plastic scraper, remove optical tape from windshield. Using cloth and cleaning solution, clean windshield thoroughly. Remove Red backing from optical tape and install module to windshield. Ensure module is positioned correctly. Hold module firmly against windshield for 10-15 seconds. Ensure no air bubbles exist between module tape and windshield. Attach electrical connector. Check module operation.
  1. Turn ignition switch to RUN position. Turn wiper switch to LOW position, and then off. Wipers will park. Turn ignition off. Disconnect washer fluid hose. Remove protective cap for access to wiper arm nut. Remove wiper arm nut.
  2. Remove wiper arm by rocking back and forth or using a battery terminal puller, if necessary. To install, reverse removal procedure. Ensure wiper arms are correctly positioned. See «WIPER ARMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__wiper-arms) under ADJUSTMENTS.
  1. Remove A/C pipe shroud. Remove wiper arms. See «WIPER ARMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system) . Disconnect negative battery cable. Remove shroud air inlet panel (cowl vent screen). Disconnect wiper motor electrical connectors. Using Wiper Transmission Separator (J-39232), separate transmission drive link socket from crank arm.
  2. Remove A/C pipe shroud bracket from wheelwell. Remove wiper motor screws. Remove wiper motor, guiding crank arm through hole. To install, reverse removal procedure. Ensure wiper arms are correctly positioned. See «WIPER ARMS»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system__wiper-arms) under ADJUSTMENTS.

Remove wiper motor assembly (if necessary). See WIPER MOTOR ASSEMBLY. Remove screws and wiper motor cover. To install, ensure drive pin is correctly positioned. (Scheme 2) To complete installation, reverse removal procedure.

Scheme 2

Scheme 2: Removal & Installation
Scheme 2: Removal & Installation
  1. Remove wiper motor cover (circuit board). See «WIPER MOTOR COVER (CIRCUIT BOARD)»(/cadillac/deville-concours/i-final-1999-1999/remont/wiperwasher-systems/#wiper-system-and-washer-system). If wiper motor is in park position, operate motor until lock pawl can be removed from relay slot. (Scheme 2) Remove screw and park switch.
  2. To install, reverse removal procedure. Before installing wiper motor cover, ensure wiper motor is in park position. Ensure drive pin is positioned as illustrated. (Scheme 2) To complete installation, reverse removal procedure.

Remove wiper arms. See WIPER ARMS . Remove air inlet screen(s). Using Wiper Transmission Separator (J-39232), remove transmission drive link socket from wiper motor assembly crank arm. Remove screws securing drive link assembly to body. Remove drive link assembly through access hole in shroud. To install, reverse removal procedure. Ensure wiper arms are correctly positioned. See WIPER ARMS under ADJUSTMENTS.

WIPER/WASHER SWITCH

WARNINGIf wiper/washer switch is located on steering column, disable air bag system before removing wiper/washer switch. See AIR BAG RESTRAINT SYSTEMS - CARS - ALL OTHER MODELS article.

Wiper/washer switch is an integral part of multifunction switch. See STEERING COLUMN SWITCHES - BONNEVILLE, DEVILLE, EIGHTY EIGHT, ELDORADO, LESABRE & LSS article.

Remove air filter housing. Reposition powertrain control module. Remove screw securing top of fluid reservoir. Raise and support vehicle. Remove left front wheel. Remove left side wheelwell panel extension. Disconnect 2 electrical connectors. Remove washer hose. Remove 2 nuts and fluid reservoir. Pull washer motor from fluid reservoir. To install, reverse removal procedure.

TORQUE SPECIFICATIONS

ApplicationFt. Lbs. (N.m)
Wiper Arm Assembly Nut17 (23)
INCH Lbs. (N.m)
Solvent Reservoir Screw/Nut44 (5)
Transmission Assembly Drive Link Adjustment Nut44 (5)
Transmission Assembly Screws71 (8)
Wiper Motor Cover Screws18 (2)
Wiper Motor Mounting Screws80 (9)

TORQUE SPECIFICATIONS

Wiper/Washer System Wiring Diagram (DeVille & Eldorado - With RAINSENSE(R) Module). Scheme 3

Scheme 3: Wiper/Washer System Wiring Diagram (DeVille & Eldorado - With RAINSENSE(R) Module)
Scheme 3: Wiper/Washer System Wiring Diagram (DeVille & Eldorado - With RAINSENSE(R) Module)

Wiper/Washer System Wiring Diagram (DeVille & Eldorado - Without RAINSENSE(R) Module). Scheme 4

Scheme 4: Wiper/Washer System Wiring Diagram (DeVille & Eldorado - Without RAINSENSE(R) Module)
Scheme 4: Wiper/Washer System Wiring Diagram (DeVille & Eldorado - Without RAINSENSE(R) Module)

See also:
• PRELIMINARY INSPECTION
• RAINSENSE(R) MODULE(R)
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• COMPONENT LOCATIONS
• WIPER/WASHER SWITCH
• WIPER ARMS