LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chrysler >> 2002 >> PT Cruiser Classic >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Modules >> System Tests >> Overhead Console >> Temperature Display Inoperative Or Wrong
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Temperature Display Inoperative Or Wrong

NOTE: After making any repairs, perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  1. Turn the ignition off. Disconnect the ambient temperature sensor harness connector. See Fig 1. Measure the resistance of the ambient temperature sensor using the following values indicated below. See AMBIENT TEMPERATURE SENSOR RESISTANCE  table. If the ambient temperature sensor resistance measures between the min/max specifications, go to the next step. If the ambient temperature sensor resistance does not measure between the min/max specifications, replace the ambient temperature sensor.
    AMBIENT TEMPERATURE SENSOR RESISTANCE

    Temperature K/ohms
    50°F (10°C) 17.99-21.81
    68°F (20°C) 11.37-13.61
    77°F (25°C) 9.12-10.88
    86°F (30°C) 7.37-8.75
    104°F (40°C) 4.90-5.75
    122°F (50°C) 3.33-3.88
  2. Turn the ignition off. Disconnect the ambient temperature sensor harness connector. Measure the voltage between the ambient temperature sensor signal circuit and ground. If there is voltage present, repair the ambient temperature sensor signal circuit for a short to voltage. If there is no voltage present, go to the next step.
  3. Turn the ignition off. Disconnect and isolate the negative battery cable. Disconnect the ambient temperature sensor harness connector. Disconnect the overhead console harness connector. See Fig 2. Measure the resistance of the ambient temperature sensor signal circuit between the sensor connector and the overhead console connector. If the resistance is above 5 ohms, repair the ambient temperature sensor signal circuit for an open. If the resistance is below 5 ohms, go to the next step.
  4. Turn the ignition off. Disconnect the ambient temperature sensor harness connector. Disconnect the overhead console harness connector. Measure the resistance between ground and the ambient temperature sensor signal circuit. If the resistance is below 5 ohms, repair the ambient temperature sensor signal circuit for a short to ground. If the resistance is above 5 ohms, go to the next step.
  5. Turn the ignition off. Disconnect and isolate the battery negative cable. Disconnect the ambient temperature sensor harness connector. Disconnect the overhead console harness connector. Measure the resistance between the ambient temperature sensor ground circuit and the sensor signal circuit. If the resistance is below 10,000 ohms, repair the ambient temperature sensor signal circuit for a short to the sensor ground circuit. If the resistance is above 10,000 ohms, go to the next step.
  6. Turn the ignition off. Disconnect and isolate the negative battery cable. Disconnect the ambient temperature sensor harness connector. Disconnect the overhead console harness connector. Measure the resistance of the ambient temperature sensor ground circuit between the sensor connector and the overhead console connector. If the resistance is above 5 ohms, repair the ambient temperature sensor ground circuit for an open. If the resistance is below 5 ohms, replace the compass/temp module.
Fig 1: Identifying Ambient Temperature Sensor Connector
G00172089Courtesy of DAIMLERCHRYSLER CORP.
Fig 2: Identifying Overhead Console Module Connector
G00172090Courtesy of DAIMLERCHRYSLER CORP.
scientia non olet · About LEMON Manuals