Diagnostic Test

WARNING: This page is about a different car, the 2013 Dodge Avenger and 2013 Chrysler 200. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
NOTE:
Diagnose any CAN - C Communication DTCs before continuing.

NOTE:
Diagnose and repair any system voltage DTCs before continuing with this test.
1. Start the engine and allow it to reach normal operating temperature.
  WARNING:
  When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
2. With the scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to STANDARD PROCEDURE .
CHECK THE (G31) AAT SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE

Fig 1: Checking AAT Signal Circuit For Short To Voltage
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Ambient Air Temperature Sensor harness connector.
3. Disconnect the Totally Integrated Power Module (TIPM) C4 harness connector.
4. Turn the ignition on.
5. Measure the voltage of the (G31) AAT Signal circuit in the Ambient Air Temperature Sensor harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (G31) AAT Signal circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK THE (G31) AAT SIGNAL FOR AN OPEN/HIGH RESISTANCE

Fig 2: Checking AAT Signal Circuit For Open Or High Resistance
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Measure the resistance of the (G31) AAT Signal circuit between the Ambient Air Temperature Sensor harness connector and the TIPM C4 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (G31) AAT Signal circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (G931) AAT SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 3: Measuring Resistance Of AAT Sensor Ground Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (G931) AAT Sensor Ground circuit between the Ambient Air Temperature Sensor harness connector and the TIPM C4 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Repair the (G931) AAT Sensor Ground circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
AMBIENT AIR TEMPERATURE SENSOR

Fig 4: Checking Ambient Air Temperature Sensor
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Connect the TIPM C4 harness connector.
3. Connect a jumper between the (G31) AAT Signal circuit and the (G931) AAT Sensor Ground in the Ambient Air Temperature Sensor harness connector.
4. Turn the ignition on.
5. With the scan tool, read the Ambient Air Temperature Sensor signal voltage.
  Is the voltage below 0.1 volt with the jumper in place?
  
  Yes
  - Replace the Ambient Air Temperature Sensor in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 6
TOTALLY INTEGRATED POWER MODULE (TIPM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Ambient Air Temperature Sensor and the TIPM.
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals.
4. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
5. Look for the data to change or for the DTC to reset during the wiggle test.
6. Perform any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace and program the Totally Integrated Power Module (TIPM) in accordance with the service information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .