Motor And Linkage

Place wiper switch in "LOW" position. If motor can be heard running, check output shaft. If output shaft is not turning, replace gearbox. If output shaft is turning, check wiper linkage.

Fig 1: Chrysler 2-Speed Motor Terminal Identification
Courtesy of CHRYSLER GROUP, LLC

Fig 2: Chrysler 2-Speed Wiper Wiring Diagram (Aspen, Volare, LeBaron, Diplomat)
Courtesy of CHRYSLER GROUP, LLC
Connect a voltmeter to terminal "L" at motor with switch in "LOW". If 12 volts present and motor not running, check ground connections, motor brushes, and armature. If 12 volts present intermittently, check for short circuits in motor, wiring, and switch with the following procedure.
Disconnect wiring connector at motor and remove wiper arms. Connect an ammeter between battery and terminal "L". Be sure motor is grounded. If motor operates and current draw is less than 6 amps, problem is in switch and wiring. If motor does not run or draws more than 6 amps, problem is in motor and linkage.
Disconnect motor from linkage. If motor now runs and draws less than 3 amps, repair linkage. If motor does not run or draws more than 3 amps, replace or repair motor and gearbox.