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Motor Runs Slowly In All Switch Positions

WARNING: This page is about a different car, the 1994 Plymouth Sundance and 1994 Dodge Shadow. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect wiring connector at motor. Remove wiper arms. Connect ammeter between battery and motor terminal No. 3. See Fig 1 . Ensure motor is properly grounded.
  2. If motor operates and average current flow is more than 6 amps, check wiper linkage and pivots for binding. Disconnect drive link from motor. If motor now runs and draws less than 3 amps, repair linkage and pivots. If motor runs and draws more than 3 amps, replace motor.
  3. Check motor wiring harness for short between high and low speed circuits. Set wiper switch to LOW position. Check for voltage between motor ground strap and wiper motor connector terminal No. 4 of wiring harness. See Fig 2 .
  4. If voltage exists, a short exists in wiring or switch. If voltage does not exist, set wiper switch to HIGH position. Check for voltage between motor ground strap and wiper motor connector terminal No. 3 of wiring harness. If voltage exists, a short exists in wiring or switch.
Fig 1: Checking Current Flow Between Terminal No. 3 & Battery
G90A14464Courtesy of CHRYSLER CORP.
Fig 2: Checking Voltage Between Terminal No. 4 & Ground
G90B14465Courtesy of CHRYSLER CORP.
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