Mechanics

CHRYSLER CROSSFIRE SENSOR PROBLEM

2005 Chrysler Crossfire

Electrical problem
2005 Chrysler Crossfire 6 cyl Two Wheel Drive Automatic 32950 miles

I have a 2005 Crossfire Convert, and the external out temperature reads and is frozen at -36F on my inside gauge.
What should my next step be?

Thank you
Avatar
Bobrhines
July 31, 2010.




Hello. Thanks for the donation.

Have the sensor tested and checked !

Diagnostic Test
1) READ AMBIENT TEMPERATURE SENSOR VOLTAGE WITH DRB III(R)

Turn the ignition on.
With the DRB III(R), read the Ambient Temperature Sensor voltage.
Does the DRB III(R) display AMBIENT TEMP: 5.0 VOLTS or greater?
Yes
Go to step 2).
No
Go to step 6).
2) MEASURE THE VOLTAGE OF THE AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT
Fig. 13: Checking Sensor Signal Circuit
Courtesy 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
Repair the Ambient Temperature Sensor Signal circuit for a short to voltage.
Perform BODY VERIFICATION TEST.
No
Go to step 3).
3) READ AMBIENT TEMPERATURE SENSOR VOLTAGE WITH DRB III(R)
Fig. 14: Checking Sensor Output
Courtesy 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(R), read the Ambient Temperature Sensor voltage.
Does the DRB III(R) display AMBIENT TEMP: 4.5 VOLTS or greater?
Yes
Go to step 4).
No
Replace the Ambient Temperature Sensor. (Refer to HEATING & AIR CONDITIONING/CONTROLS/AMBIENT TEMP SENSOR - REMOVAL).
Perform BODY VERIFICATION TEST.
4) MEASURE THE RESISTANCE OF THE AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT
Fig. 15: Checking Sensor Signal Circuit
Courtesy 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
Go to step 5).
No
Repair the Ambient Temperature Sensor Signal circuit for an open.
Perform BODY VERIFICATION TEST.
5) MEASURE THE RESISTANCE OF THE SENSOR GROUND CIRCUIT
Fig. 16: Checking Sensor Ground Circuit
Courtesy 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
Replace the Instrument Cluster. (Refer to ELECTRICAL/INSTRUMENT CLUSTER - REMOVAL).
Perform BODY VERIFICATION TEST.
No
Repair the Sensor Ground circuit for an open.
Perform BODY VERIFICATION TEST.
6) READ AMBIENT TEMPERATURE SENSOR VOLTAGE WITH DRB III(R)
Fig. 17: Checking Sensor Output
Courtesy 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(R), read the Ambient Temperature Sensor voltage.
Does the DRB III(R) display AMBIENT TEMP: 4.5 VOLTS or greater?
Yes
Go to step 7).
No
Go to step 9).
7) READ A/C HEATER CONTROL MODULE DTC'S WITH DRB III(R)
Fig. 18: Connecting Scan Tool & Turning Ignition On
Courtesy of DAIMLERCHRYSLER CORP.
Turn the ignition off.
Reconnect the Ambient Temperature Sensor connector.
Turn the ignition on.
With the DRB III(R), read A/C Heater Control Module DTC's.
Wait two minutes.
With the DRB III(R), read A/C Heater Control Module DTC's.
Does the DRB III(R) display Ambient Temperature Sensor Failure DTC?
Yes
Replace the Ambient Temperature Sensor. (Refer to HEATING & AIR CONDITIONING/CONTROLS/AMBIENT TEMP SENSOR - REMOVAL).
Perform BODY VERIFICATION TEST.
No
Go to step 8).
8) READ A/C HEATER CONTROL MODULE DTC'S WITH DRB III(R)
Fig. 19: Connecting Scan Tool & Turning Ignition On
Courtesy 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(R), read A/C Heater Control Module DTC's.
Does the DRB III(R) display Ambient Temperature Sensor Failure DTC?
Yes
Replace the Ambient Temperature Sensor. (Refer to HEATING & AIR CONDITIONING/CONTROLS/AMBIENT TEMP SENSOR - REMOVAL).
Perform BODY VERIFICATION TEST.
No
The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.
Perform BODY VERIFICATION TEST.
9) MEASURE THE RESISTANCE BETWEEN GROUND AND THE AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT
Fig. 20: Checking Sensor Signal Circuit
Courtesy 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
Repair the Ambient Temperature Sensor Signal circuit for a short to ground.
Perform BODY VERIFICATION TEST.
No
Go to step 10).
10) MEASURE THE RESISTANCE FROM THE AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT TO THE SENSOR GROUND CIRCUIT
Fig. 21: Checking Sensor Signal Circuit & Ground Circuit
Courtesy 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
Repair the Ambient Temperature Sensor Signal circuit for a short to the Sensor Ground circuit.
Perform BODY VERIFICATION TEST.
No
Replace the Instrument Cluster. (Refer to ELECTRICAL/INSTRUMENT CLUSTER - REMOVAL).
Perform BODY VERIFICATION TEST.

Dave H
Jul 31, 2010.


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