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Home >> Chrysler >> 2005 >> Crossfire SRT-6, 2D Coupe >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster - Electrical Diagnostics >> DTC Troubleshooting >> Ambient Temperature Sensor Circuit >> Diagnostic Test

Diagnostic Test

  1. 1)   READ AMBIENT TEMPERATURE SENSOR VOLTAGE WITH DRB III®
    Fig 1: Connecting Scan Tool & Turning Ignition On
    GC0032455Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition on.

    With the DRB III®, read the Ambient Temperature Sensor voltage.

    Does the DRB III® display AMBIENT TEMP: 5.0 VOLTS or greater? 

    Yes 

    1. Go to step  2).

    No 

    1. Go to step  6).
  2. 2)   MEASURE THE VOLTAGE OF THE AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT
    Fig 2: Checking Sensor Signal Circuit
    GC0033457Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Ambient Temperature Sensor harness connector.

    NOTE: Check connectors - Clean/repair as necessary.

    Turn the ignition on.

    Measure the voltage of the Ambient Temperature Sensor Signal circuit at the Ambient Temperature Sensor harness connector.

    Is the voltage above 5.5 volts? 

    Yes 

    1. Repair the Ambient Temperature Sensor Signal circuit for a short to voltage.
    2. Perform BODY VERIFICATION TEST .

    No 

    1. Go to step  3).
  3. 3)   READ AMBIENT TEMPERATURE SENSOR VOLTAGE WITH DRB III®
    Fig 3: Checking Sensor Output
    GC0033458Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Connect a jumper wire between the Ambient Temperature Sensor Signal circuit and the Sensor Ground circuit.

    Turn the ignition on.

    With the DRB III®, read the Ambient Temperature Sensor voltage.

    Does the DRB III® display AMBIENT TEMP: 4.5 VOLTS or greater? 

    Yes 

    1. Go to step  4).

    No 

    1. Replace the Ambient Temperature Sensor. (Refer to HEATING & AIR CONDITIONING/CONTROLS/AMBIENT TEMP SENSOR - REMOVAL) .
    2. Perform BODY VERIFICATION TEST .
  4. 4)   MEASURE THE RESISTANCE OF THE AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT
    Fig 4: Checking Sensor Signal Circuit
    GC0033459Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Instrument Cluster harness connector.

    NOTE: Check connectors - Clean/repair as necessary.

    Measure the resistance of the Ambient Temperature Sensor Signal circuit from the Instrument Cluster harness connector to the Ambient Temperature Sensor harness connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go to step  5).

    No 

    1. Repair the Ambient Temperature Sensor Signal circuit for an open.
    2. Perform BODY VERIFICATION TEST .
  5. 5)   MEASURE THE RESISTANCE OF THE SENSOR GROUND CIRCUIT
    Fig 5: Checking Sensor Ground Circuit
    GC0033460Courtesy of DAIMLERCHRYSLER CORP.

    With the ignition off.

    Measure the resistance of the Sensor Ground circuit from the Instrument Cluster harness connector to the Ambient Temperature Sensor harness connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Replace the Instrument Cluster. (Refer to ELECTRICAL/INSTRUMENT CLUSTER - REMOVAL) .
    2. Perform BODY VERIFICATION TEST .

    No 

    1. Repair the Sensor Ground circuit for an open.
    2. Perform BODY VERIFICATION TEST .
  6. 6)   READ AMBIENT TEMPERATURE SENSOR VOLTAGE WITH DRB III®
    Fig 6: Checking Sensor Output
    GC0033464Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Ambient Temperature Sensor harness connector.

    NOTE: Check connectors - Clean/repair as necessary.

    Turn the ignition on.

    With the DRB III®, read the Ambient Temperature Sensor voltage.

    Does the DRB III® display AMBIENT TEMP: 4.5 VOLTS or greater? 

    Yes 

    1. Go to step  7).

    No 

    1. Go to step  9).
  7. 7)   READ A/C HEATER CONTROL MODULE DTC'S WITH DRB III®
    Fig 7: Connecting Scan Tool & Turning Ignition On
    GC0032464Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Reconnect the Ambient Temperature Sensor connector.

    Turn the ignition on.

    With the DRB III®, read A/C Heater Control Module DTC's.

    Wait two minutes.

    With the DRB III®, read A/C Heater Control Module DTC's.

    Does the DRB III® display Ambient Temperature Sensor Failure DTC? 

    Yes 

    1. Replace the Ambient Temperature Sensor. (Refer to HEATING & AIR CONDITIONING/CONTROLS/AMBIENT TEMP SENSOR - REMOVAL) .
    2. Perform BODY VERIFICATION TEST .

    No 

    1. Go to step  8).
  8. 8)   READ A/C HEATER CONTROL MODULE DTC'S WITH DRB III®
    Fig 8: Connecting Scan Tool & Turning Ignition On
    GC0032464Courtesy of DAIMLERCHRYSLER CORP.

    Ensure the Ambient Temperature Sensor is connected at this time.

    Start the engine.

    Turn the A/C system on and run for at least five minutes.

    With the DRB III®, read A/C Heater Control Module DTC's.

    Does the DRB III® display Ambient Temperature Sensor Failure DTC? 

    Yes 

    1. Replace the Ambient Temperature Sensor. (Refer to HEATING & AIR CONDITIONING/CONTROLS/AMBIENT TEMP SENSOR - REMOVAL) .
    2. Perform BODY VERIFICATION TEST .

    No 

    1. The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.
    2. Perform BODY VERIFICATION TEST .
  9. 9)   MEASURE THE RESISTANCE BETWEEN GROUND AND THE AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT
    Fig 9: Checking Sensor Signal Circuit
    GC0033462Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Instrument Cluster harness connector.

    NOTE: Check connectors - Clean/repair as necessary.

    Measure the resistance between ground and the Ambient Temperature Signal circuit.

    Is the resistance below 1000.0 ohms? 

    Yes 

    1. Repair the Ambient Temperature Sensor Signal circuit for a short to ground.
    2. Perform BODY VERIFICATION TEST .

    No 

    1. Go to step  10).
  10. 10)   MEASURE THE RESISTANCE FROM THE AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT TO THE SENSOR GROUND CIRCUIT
    Fig 10: Checking Sensor Signal Circuit & Ground Circuit
    GC0033461Courtesy of DAIMLERCHRYSLER CORP.

    With the ignition off.

    Measure the resistance from the Ambient Temperature Sensor Signal circuit to the Sensor Ground circuit at the Ambient Temperature Sensor connector.

    Is the resistance below 1000.0 ohms? 

    Yes 

    1. Repair the Ambient Temperature Sensor Signal circuit for a short to the Sensor Ground circuit.
    2. Perform BODY VERIFICATION TEST .

    No 

    1. Replace the Instrument Cluster. (Refer to ELECTRICAL/INSTRUMENT CLUSTER - REMOVAL) .
    2. Perform BODY VERIFICATION TEST .
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