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Cold Dr5 - Throttle Position Sensor (TPS)

  1. Connect voltmeter negative lead to a good ground, and attach positive lead to cavity No. 13 of 13-wire ECU connector. Turn ignition switch to "RUN" position. Check voltage with throttle closed and open. On vehicles with ECU No. MD072035, voltage should read 0-1 volt with throttle closed and 2-3 volts with throttle wide open. On vehicles with ECU Nos. MD080152, MD082058 or MD082059, voltage should be 0-1 volts with throttle closed; 3-5.5 volts with throttle wide open.
    Fig 1: View of 13-Way Connector, COLD DR5 - Throttle Position Sensor
    G95722Courtesy of CHRYSLER MOTORS.
  2. If voltage is as specified, proceed to COLD DR6. If voltage is not to specifications, turn ignition off and unplug 4-wire carburetor connector. Connect ohmmeter leads to Orange and Light Green/Red wires. Resistance should be 3500-6500 ohms with throttle closed and 100-1000 ohms with throttle wide open. If not, replace throttle position sensor.
  3. If resistance was okay, connect ohmmeter leads to cavity Nos. 3 and 13 of 13-wire connector. Resistance should be 3500-6500 ohms with throttle closed and 100-1000 ohms with throttle wide open. If okay, replace ECU. If not okay, repair open wires to throttle sensor.
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