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Home >> Geo >> 1996 >> Tracker Base, 4D Utility, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Wiper/Washer Systems >> System Testing >> Front Wiper System Tests >> Testing (With Intermittent Wiper System)

Testing (With Intermittent Wiper System)

  1. Turn ignition switch to ON position. Pull front wiper/washer switch back. If front washer pump operates and wipers complete at least one full sweep, go to next step. If front washer pump does not operate, go to step 5). If front washer pump operates and wipers do not complete at least one full sweep, go to step 13). If front washer pump continues to operate after front wiper/washer switch is released, go to step 17). If wipers continue to operate after front wiper/washer switch is released, go to step 18).
  2. Turn front wiper/washer switch to INT position. If wipers sweep once every 6 seconds, go to next step. If wipers do not operate in intermittent mode, go to step 20).
  3. Turn front wiper/washer switch to LO position. If wipers operate at low speed, go to next step. If wipers do not operate, replace combination switch. If wipers operate at high speed, go to step 9).
  4. Turn front wiper/washer switch to HI position. If wipers operate at high speed, system is operating properly. If wipers operate at low speed, replace combination switch. If wipers do not operate, go to step 11).
  5. Using a test light, backprobe between combination switch Natural 20-pin connector terminal No. 4 (Yellow/Blue wire) and ground. If test light illuminates, go to next step. If test light does not illuminate, repair open in Yellow/Blue wire between fuse block No. 2 and combination switch.
  6. Using a test light, backprobe between combination switch Natural 20-pin connector terminal No. 16 (Black/Blue wire) and ground. If test light illuminates, go to next step. If test light does not illuminate, replace combination switch.
  7. Turn ignition switch to LOCK position. Disconnect front washer pump and combination switch connectors. Using an ohmmeter, backprobe between combination switch Natural 20-pin connector terminal No. 16 (Blue/Black wire) and front washer pump connector terminal No. 2 (Blue/Black wire). If resistance is less than one ohm, go to next step. If resistance is one ohm or more, repair open in Blue/Black wire.
  8. Using an ohmmeter, backprobe between front washer pump connector terminal No. 1 (Black wire) and ground. If resistance is one ohm or more, repair open in Black wire. If resistance is less than one ohm, replace front washer pump.
  9. Using a test light, backprobe between front wiper motor connector terminal No. 1 (Blue/Red wire) and ground. Front wiper/washer switch should be in LO position. If test light illuminates, go to next step. If test light does not illuminate, replace front wiper motor.
  10. Disconnect combination switch Natural 20-pin connector. Using a test light, backprobe between combination switch Natural 20-pin connector terminal No. 15 (Blue/Red wire) and ground. If test light does not illuminate, replace combination switch. If test light illuminates, repair short to battery voltage in Blue/Red wire.
  11. Using a test light, backprobe between front wiper motor connector terminal No. 1 (Blue/Red wire) and ground. Front wiper/washer switch should be in HI position. If test light does not illuminate, go to next step. If test light illuminates, replace front wiper motor.
  12. Using a test light, backprobe between combination switch Natural 20-pin connector terminal No. 15 (Blue/Red wire) and ground. If test light does not illuminate, replace combination switch. If test light illuminates, repair open in Blue/Red wire.
  13. Using a test light, backprobe between front wiper motor connector terminal No. 2 (Blue wire) and ground. Pull and hold front wiper/washer switch. If test light does not illuminate, go to next step. If test light illuminates, replace front wiper motor.
  14. Using a test light, backprobe between combination switch Natural 20-pin connector terminal No. 19 (Blue wire) and ground. If test light does not illuminate, go to next step. If test light illuminates, repair open in Blue wire.
  15. Using a test light, backprobe between front wiper motor connector terminal No. 4 (Yellow/Blue wire) and ground. If test light illuminates, go to next step. If test light does not illuminate, repair open in Yellow/Blue wire between front wiper motor and splice.
  16. Disconnect combination switch connector. Move wipers out of park position. Using a test light, backprobe between front wiper motor connector terminal No. 3 (Blue/White wire) and ground. If test light does not illuminate, replace front wiper motor. If test light illuminates, check for open in Blue/White wire. If wire is okay, replace combination switch.
  17. Disconnect combination switch connector. If front washer pump continues to operate, repair short to battery voltage in Blue/Black wire between combination switch and front washer pump. If front washer pump stops operating, replace combination switch.
  18. Disconnect combination switch connector. If front washer pump continues to operate, go to next step. If front washer pump stops operating, replace combination switch.
  19. Disconnect front wiper motor connector. Using a test light, backprobe between front wiper motor connector terminal No. 2 (Blue wire) and ground. If test light illuminates, repair short to battery voltage in Blue wire. If test light does not illuminate, check for a short to battery voltage in Blue/Red wire between combination switch and front wiper motor. If wire is okay, replace front wiper motor.
  20. Turn ignition switch to LOCK position. Disconnect combination switch Natural 20-pin connector. Using an ohmmeter, backprobe between combination switch Natural 20-pin connector terminal No. 7 (Black wire) and ground. If resistance is one ohm or more, repair open in Black wire between combination switch and ground connection. If resistance is less than one ohm, replace combination switch.
Fig 1: Identifying Combination Switch Connector Terminals
G96H06114Courtesy of GENERAL MOTORS CORP.
COMBINATION SWITCH CONNECTOR TERMINAL ID

Terminal No. (Wire Color) (1) Circuit
1 (RED) Dimmer Switch (High Beam)
2 (YEL/WHT) Turn/Hazard Relay
3 (GRN/BLU) Horn Relay
4 (YEL/BLU) Front Wiper/Washer Switch
5 (YEL) TURN BACK (15-Amp) Fuse
6 (WHT/GRN) HAZ (15-Amp) Fuse
7 (BLK) Ground
8 (GRN/YEL) Right Turn Indicator
9 (GRN) Turn/Hazard Relay
10 (RED/GRN) Dimmer Switch (Low Beam)
11 (YEL/RED) Dimmer Switch
12 (GRN/RED) Left Turn Indicator
13 (BLK) Ground
14 (BLU/WHT) Front Wiper/Washer Switch
15 (BLU/RED) Front Wiper/Washer Switch
16 (BLU/BLK) Ground
17 (PNK/BLU) Headlight ON Signal
18 (RED/BLU) Headlight Switch
19 (BLU) Front Wiper Motor
20 (BLK) Ground
(1) Terminals not identified are not used.
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