1982 Plymouth Sapporo Automatic TransFACTORY OEM SERVICE PROCEDURE

In-Car Sensor

  1. With glove box removed, separate in-car sensor wiring connector from harness connector. Do not disconnect aspirator tubes or remove sensor from instrument panel. Perform aspirator paper test as previously described in this section.
  2. Place stem of thermometer into air inlet grille near the in-car sensor. With blower speed M2, depress "MAX A/C" button, then pull out to turn off compressor and close water valve.
  3. Operate blower and connect ohmmeter to sensor wiring terminals. Quickly measure in-car sensor resistance. Resistance should be between 1100 and 1800 ohms when the thermometer reads between 70° and 80°F.
    NOTE: Do not connect meter for more than 5 seconds because ohmmeter can affect resistance and measurement accuracy.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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