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Home >> Plymouth >> 1987 >> Colt Vista FWD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> MPI System >> Testing & Diagnosis >> Component Testing & Inspection >> Motor Position Sensor
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Motor Position Sensor

  1. Turn ignition switch to "LOCK" position. Disconnect ISC motor connector. Turn ignition on (do not start engine). Connect four 6-volt DC batteries between terminals No. 1 (Red) and No. 4 (Black) of ISC motor connector to operate ISC motor. See Figure .
  2. Check that motor position sensor output voltage changes smoothly from .5 volts to 5 volts when motor is extended and retracted.
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