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Home >> Plymouth >> 1982 >> Sapporo Automatic Trans >> Repair and Diagnosis >> Electrical >> Body Electrical >> Wiper/Washer Systems >> Testing >> Intermittent Relay

Intermittent Relay

  1. If wipers do not park or operate properly in intermittent position, turn wipers on to intermittent. Insert positive lead of voltmeter into rear of relay connector at terminal 3 and check voltage.
  2. Battery voltage should be read at terminal 3 when wipers are stopped. No voltage should be present when wipers are operating. Replace relay if defective.
    Fig 1: Intermittent Wiper Relay Location
    G09330322Courtesy of CHRYSLER GROUP, LLC

    Figure applies to Challanger & Sapporo models only. 

  3. If wipers do not operate at all in intermittent position, connect a voltmeter to relay. Place the positive lead on terminal 1 and negative lead on terminal 4.
  4. Battery voltage should be present. Check voltage between terminal 6 and 4, then between 3 and 4. No voltage should be present. If readings are not correct, replace relay.
  5. If wipers do not operate with washer switch on, check for voltage between terminal 1 (+) and terminal 4 (-). Battery voltage should be present. With the washer switch on, no voltage should be present at terminal 5.
  6. Terminal 3 should have battery voltage for 0.6-1.5 seconds, then drop to zero while wipers operate, then return to 12 volts when wipers stop. If readings are not correct, replace relay.