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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.
  1. ACTIVE DTC 
    NOTE:

    Refer to the following table when diagnosing speed control switch voltage DTCs.

      Switch 1 voltage Switch 2 voltage
    On/Off - Min. 0.5882 3.5294
    On/Off - Max. 1.1373 3.9216
    Set - Min. 3.1569 1.1765
    Set - Max. 3.5686 1.5686
    Cancel - Min. 1.5882 2.8431
    Cancel - Max. 2.0000 3.2549
    Accel - Min. 3.8824 2.0392
    Accel - Max. 4.1765 2.4706
    1. Start the engine and allow it to idle for at least 60 seconds.
      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.

      NOTE:

      It may be necessary to test drive the vehicle and operate the speed control in order for this DTC to set.

    2. With the scan tool, select View DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go To  2

      No 

  2. SPEED CONTROL SWITCH 
    1. Turn the ignition off.
    2. Remove the Speed Control Switch in accordance with the Service Information.
    3. Turn the ignition on.
    4. With the scan tool, read the (V71) S/C Signal 1 and (V72) S/C Signal 2 voltages.
      NOTE:

      The voltages should be above 4.8 volts with the Speed Control Switch connector disconnected.

    5. Connect a jumper wire between the (V71) S/C Signal 1 circuit and the (V937) S/C Switch Ground circuit in the Speed Control Switch harness connector.
    6. With the scan tool, read the (V71) S/C Signal 1 voltage.
      NOTE:

      The (V71) S/C Signal 1 voltage should be below 2 volts with the jumper wire in place.

    7. Connect a jumper wire between the (V72) S/C Signal 2 circuit and the (V937) S/C Switch Ground circuit in the Speed Control Switch harness connector.
    8. With the scan tool, read the (V72) S/C Signal 2 voltage.
      NOTE:

      The (V72) S/C Signal 2 voltage should be below 2 volts with the jumper wire in place.

      Are the Speed Control voltages displayed as described?

      Yes 

      • Replace the Speed Control Switch in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3
  3. CLOCKSPRING 
    Fig 1: Identifying Clockspring C2 Connector Terminals
    GC0099975Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Clockspring C2 harness connector.
    3. Turn the ignition on.
    4. With the scan tool, read the (V71) S/C Signal 1 and (V72) S/C Signal 2 voltages.
      NOTE:

      The voltages should be above 4.8 volts with the connector disconnected.

    5. Connect a jumper wire between the (V71) S/C Signal 1 circuit and the (V937) S/C Switch Ground circuit in the Clockspring C2 harness connector.
    6. With the scan tool, read the (V71) S/C Signal 1 voltage.
      NOTE:

      The (V71) S/C Signal 1 voltage should be below 2 volts with the jumper wire in place.

    7. Connect a jumper wire between the (V72) S/C Signal 2 circuit and the (V937) S/C Switch Ground circuit in the Clockspring C2 harness connector.
    8. With the scan tool, read the (V72) S/C Signal 2 voltage.
      NOTE:

      The (V72) S/C Signal 2 voltage should be below 2 volts with the jumper wire in place.

      Are the Speed Control voltages displayed as described?

      Yes 

      • Replace the Clockspring in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4
  4. (V71) S/C SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE 
    Fig 2: Measuring Voltage On S/C Switch Sense Circuits In Clockspring Harness Connector
    GC0094907Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the PCM harness connector.
    3. Turn the ignition on.
    4. Measure the voltage of the (V71) S/C Signal 1 circuit in the Clockspring C2 harness connector.

      Is there any voltage present?

      Yes 

      • Repair the (V71) S/C Signal 1 circuit for a short to voltage.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  5
  5. (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO VOLTAGE 
    Fig 3: Measuring Voltage On S/C Switch Sense Circuit In Clockspring C2 Harness Connector
    GC0094914Courtesy of CHRYSLER GROUP, LLC
    1. Measure the voltage of the (V72) S/C Signal 2 circuit in the Clockspring C2 harness connector.

      Is there any voltage present?

      Yes 

      • Repair the (V72) S/C Signal 2 circuit for a short to voltage.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  6
  6. (V71) S/C SIGNAL 1 CIRCUIT SHORTED TO GROUND 
    Fig 4: Measuring Resistance Between Ground And S/C Switch Sense Circuit In SCM Harness Connector
    GC0094908Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Measure the resistance between ground and the (V71) S/C Signal 1 circuit in the Clockspring C2 harness connector.

      Is the resistance above 10k Ohms?

      Yes 

      • Go To  7

      No 

      • Repair the (V71) S/C Signal 1 circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  7. (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO GROUND 
    Fig 5: Measuring Resistance Between Ground And (V72) S/C Switch Sense 2 Circuit In Clockspring C2 Harness Connector
    GC0094915Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Measure the resistance between ground and the (V72) S/C Signal 2 circuit in the Clockspring C2 harness connector.

      Is the resistance above 10k Ohms?

      Yes 

      • Go To  8

      No 

      • Repair the (V72) S/C Signal 2 circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  8. (V71) S/C SIGNAL 1 CIRCUIT SHORTED TO THE (V937) S/C SWITCH GROUND CIRCUIT 
    Fig 6: Measuring Resistance Between S/C Switch Sense Circuit And S/C Switch Return Circuit In Clockspring C2 Harness Connector
    GC0094909Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between the (V71) S/C Signal 1 circuit and the (V937) S/C Switch Ground circuit in the C2 Clockspring harness connector.

      Is the resistance above 10k Ohms?

      Yes 

      • Go To  9

      No 

      • Repair the (V71) S/C Signal 1 circuit for a short to the Clockspring circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  9. (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO THE (V937) S/C SWITCH GROUND CIRCUIT 
    Fig 7: Measuring Resistance Between S/C Switch Sense Circuit And S/C Switch Return Circuit In Clockspring C2 Harness Connector
    GC0094916Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between the (V72) S/C Signal 2 circuit and the (V937) S/C Switch Ground circuit in the Clockspring C2 harness connector.

      Is the resistance above 10k Ohms?

      Yes 

      • Go To  10

      No 

      • Repair the (V72) S/C Signal 2 circuit for a short to the (V937) S/C Switch Ground circuit.
      • Perform the POWERTRAIN VERIFICATION TEST.
  10. (V71) S/C SIGNAL 1 CIRCUIT OPEN OR HIGH RESISTANCE 
    CAUTION:

    Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the GPEC Diagnostic Adaptor to perform the diagnosis.

    1. Connect the (special tool #10436, Adapter, GPEC Diagnostic).
    2. Measure the resistance of the (V71) S/C Signal 1 circuit between the Clockspring C2 harness connector and the GPEC Adaptor.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  11

      No 

      • Repair the (V71) S/C Signal 1 circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  11. (V72) S/C SIGNAL 2 CIRCUIT OPEN OR HIGH RESISTANCE 
    1. Measure the resistance of the (V72) S/C Signal 2 circuit between the Clockspring C2 harness connector and the GPEC Adaptor.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  12

      No 

      • Repair the (V72) S/C Signal 2 circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  12. (V937) S/C SWITCH GROUND CIRCUIT OPEN OR HIGH RESISTANCE 
    1. Measure the resistance of the (V937) S/C Switch Ground circuit between the Clockspring C2 harness connector and the GPEC Adaptor.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  13

      No 

      • Repair the (V937) S/C Switch Ground circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  13. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Speed Control Switch and the Powertrain Control Module (PCM).
      • Look for any chafed, pierced, pinched or partially broken wires.
      • Look for broken, bent, pushed out or corroded terminals.
      • 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 

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