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Front Wipers Not Working At All

  1. Turn ignition on. Using scan tool, actuate front wiper relay. If wiper motor does not operate in low speed mode, go to step  7 . If wiper motor operates in low speed mode, go to next step.
  2. Stop wiper motor actuation. Ensure ignition is on. Turn wiper switch to LOW position. Using scan tool, select SENSORS and read intermittent wiper voltage. If scan tool does displays INTRMT WIPE: 2.5V or less, go to next step. If scan tool displays more than INTRMT WIPE: 2.5V, replace Body Control Module (BCM). BCM is located with junction block under driver's side instrument panel. See Figure .
  3. Turn ignition off. Disconnect Body Control Module (BCM) connector "A". Body Control Module (BCM). BCM is located with junction block under driver's side instrument panel. See Figure . Measure voltage between ground and terminal No. 7 (Dark Green/Yellow wire) at BCM connector "A". See Figure . If voltage is 10 volts or less, go to next step. If voltage is more than 10 volts, replace BCM.
  4. Remove lower steering column cover. Disconnect multifunction switch 12-pin connector. See Figure . Inspect connector for damaged pins, corrosion and loose terminals. Repair connector as necessary. If connector is okay, measure voltage between ground and terminal No. 7 (Dark Blue wire) at multifunction switch connector. If voltage is 10 volts or less, repair open in Dark Blue wire between junction block (under driver's side instrument panel) and multifunction switch. If voltage is more than 10 volts, go to next step.
  5. Turn ignition off. Measure resistance between ground and terminal No. 6 (Dark Green/Yellow wire) at multifunction switch connector. If resistance is less than 5 ohms, repair short to ground in Dark Green/Yellow wire. If resistance is 5 ohms or more, go to next step.
  6. Turn ignition on. Connect a jumper wire between terminals No. 6 (Dark Green/Yellow wire) and No. 7 (Dark Blue wire) at multifunction switch connector. Measure voltage between ground and terminal No. 7 (Dark Green/Yellow wire) at BCM connector "A". See Figure . If voltage is 10 volts or less, repair open in Dark Green/Yellow wire between BCM and multifunction switch. If voltage is more than 10 volts, replace multifunction switch.
  7. Using scan tool, stop front wiper low speed actuation. Turn ignition off. Remove and inspect wiper fuse No. 109 (30-amp) from Power Distribution Center (PDC) in engine compartment next to battery. See Figure . If fuse is okay, go to step  12 . If fuse is blown, go to next step.
  8. Remove front wiper ON relay from PDC. See Figure . Ensure connector is clean and not damaged. Remove high/low wiper relay from PDC and ensure connector is clean and not damaged. Measure resistance between ground and terminal No. 87 at wiper ON relay socket in PDC. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, replace PDC.
  9. Measure resistance between ground and terminal No. 30 at wiper ON relay socket in PDC. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, replace PDC.
  10. Disconnect wiper module connector. See Figure . Measure resistance between ground and terminal No. 87A at wiper high/low relay socket in PDC. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground in Brown/White wire between wiper module connector and PDC. Replace wiper fuse No. 109.
  11. Measure resistance between ground and terminal No. 87 at wiper high/low relay socket in PDC. If resistance is less than 5 ohms, repair short to ground in Red/Yellow wire between wiper module connector and PDC. Replace wiper fuse No. 109. If resistance is 5 ohms or more, check wiper wiring harness for broken or shorted wires. Repair wiring harness as necessary. If wiring harness is okay, replace wiper motor and wiper fuse No. 109.
  12. Turn ignition on. Measure voltage between ground and battery input side of fuse holder for fuse No. 109 in PDC. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair power circuit to PDC or replace PDC. See appropriate wiring diagram in POWER DISTRIBUTION article in WIRING DIAGRAMS.
  13. Reinstall wiper fuse No. 109. Remove wiper ON relay from PDC and ensure connector is clean and not damaged. Repair as necessary and retest. If connector is okay, measure voltage between ground and terminal No. 87 at wiper ON relay socket in PDC. See Figure . If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair or replace PDC.
  14. Connect a jumper wire between terminals No. 30 and 87 at wiper ON relay socket in PDC. If wiper motor operates, disconnect jumper wire and go to next step. If wiper motor does not operate, go to step  18 .
  15. Measure voltage between ground and terminal No. 86 at wiper ON relay socket in PDC. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair or replace PDC.
  16. Reinstall wiper ON relay. Access Body Control Module (BCM) connector "B". BCM is located with junction block under driver's side instrument panel. See Figure . Remove connector cover. Do not disconnect connector. Connect a jumper wire between ground and terminal No. 73 (Red/Violet wire) at BCM connector "B". See Figure . If wiper motor operates, replace BCM. If wiper motor does not operate, go to next step.
  17. Remove wiper ON relay. Do not disconnect jumper wire. Measure resistance between ground and front wiper ON relay socket terminal No. 85. If resistance is less than 5 ohms, replace relay. If resistance is 5 ohms or more, repair open in Red/Violet wire between BCM and PDC.
  18. Ensure jumper wire is still connected between terminals No. 30 and 87 at wiper ON relay socket. Remove wiper high/low relay from PDC. Ensure connector is clean and not damaged. Repair connector as necessary. If connector is okay, measure voltage between ground and terminal No. 30 at wiper high/low relay socket in PDC. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair or replace PDC.
  19. Disconnect jumper wire from wiper ON relay socket. Connect a jumper wire between terminal No. 87 at wiper ON relay socket and terminal No. No. 87A at wiper high/low relay in PDC. If wiper motor operates in low speed mode, replace wiper high/low relay. If wiper motor does not operate in low speed mode, go to next step.
  20. Disconnect wiper module connector. See Figure . Ensure jumper wire is still connected between terminal No. 87 at wiper ON relay socket and terminal No. 87A at wiper high/low relay. Measure voltage between ground and terminal No. 1 (Brown/White wire) at wiper module connector. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open in Brown/White wire between and wiper motor module and PDC.
  21. Turn ignition off. Ensure all lights and accessories are off. Measure resistance between ground and terminal No. 4 (Black wire) at wiper module connector. If resistance is less than 5 ohms, replace wiper motor. If resistance is 5 ohms or more, repair open in Black wire between ground and wiper module. Ground location is located behind left front kick panel.
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