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Home >> Plymouth >> 1990 >> Colt Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - PFI >> Engine Sensors & Switches >> Throttle Position Sensor
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Throttle Position Sensor

  1. TPS is mounted to throttle body, at end of throttle shaft. Disconnect TPS connector. See Figure -Figure . Using ohmmeter, measure total resistance between TPS connector terminals as specified in TPS CONNECTOR TERMINAL IDENTIFICATION  . If resistance is not 3500-6500 ohms, replace TPS.
  2. Using an analog (needle-type) ohmmeter, measure variable resistance between TPS connector terminals as specified in TPS CONNECTOR TERMINAL IDENTIFICATION.
  3. Operate throttle valve from closed to wide open throttle. If rate of resistance does not change smoothly within the 3500-6500 ohm range throughout the range of throttle valve movement, replace TPS.
Fig 1: Identifying Colt Vehicle Speed Sensor Connector Terminals
G120155Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
Fig 2: Identifying Colt Vista Vehicle Speed Sensor Connector Terminals
G120158Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
Fig 3: Identifying Colt Wagon Vehicle Speed Sensor Connector Terminals
G120156Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
TPS CONNECTOR TERMINAL IDENTIFICATION

Application Terminal Numbers
Total Resistance
Colt, Colt Wagon, Colt 200 & Colt Wagon 1.8L 1 & 4
Colt Vista 2.0L 1 & 2
Eclipse 2.0L (VIN R & U) 2 & 3
Precis 1.5L 1 & 3
Variable Resistance
Colt, Colt Wagon, Colt 200 & Colt Wagon 1.8L 2 & 4
Colt Vista 2.0L 2 & 3
CAUTION: When testing continuity of vehicle speed sensor, use a digital ohmmeter with a minimum 10-megohm input impedance.
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