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Home >> Plymouth >> 1979 >> Arrow Base, Automatic Trans >> Repair and Diagnosis >> Accessories & Equipment >> Wiper/Washer Systems >> Testing >> 2-Speed Functional Tests

2-Speed Functional Tests

NOTE: Remove wiring harness connectors from wiper motor. Check mounting bolts to assure ground.
  1. Low Speed Test  For Horizon, Omni, Volare and Aspen without intermittent wiper motor, connect a jumper wire between terminal "L" on motor and positive battery post. The motor should run. If it runs, proceed to step 2).  If not, proceed to step  5).

    For all other models and all models with intermittent wiper motor, make an additional connection from "P2" terminal to ground. Motor should run. If it runs, proceed to step 2).  If not, proceed to step  5).

  2. High Speed Test  Move jumper wire to terminal "H". Motor should run. If it runs, proceed to step 3).  If not, proceed to step  5).
  3. Park Test  For Horizon, Omni, Volare and Aspen, without intermittent wiper, connect a jumper wire between "P2" and "L" on wiper motor. Connect a second jumper wire from battery to "P1" terminal. Wipers should park. If OK, proceed to step 4).  If not, proceed to step  5).

    For all other models and all models with intermittent motor, connect a jumper wire between "L" and ground on motor. Connect a jumper wire from battery to "PI" terminal. Wipers should park. If OK, proceed to step 4).  If not, proceed to step  5).

  4. Wiper motor is good, check switch or wiring.
  5. Motor is not functional, refer to SYSTEM TESTS  before removing motor.