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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1185 (3.6L - DTCS P0369 To P061A - 1500) >> DTC Troubleshooting >> P0591-Speed Control Switch 2 Performance >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE SPEED CONTROL DTC 

NOTE:

Diagnose and repair any Can bus, communication or implausible signal DTCs or Speed Control Switch DTCs in the Steering Column Control Module (SCCM) before proceeding with this test.

  1. Cycle the ignition off and back on.
  2. Test drive the vehicle and operate the Set (+) and Resume buttons of the speed control system to operate the system.
    NOTE: The scan tool will display the fault as active only when a Speed Control Switch is pressed.
  3. With the scan tool, read DTCs

    Does the scan tool display this DTC as active or pending? 

    Yes 

    WARNING:

    Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

    WARNING:

    Do not place an intact non-deployed airbag face down on a hard surface, the airbag propels into the air if accidentally deployed. Failure to follow these instructions may result in possible serious or fatal injury.

    • Replace the Speed Control Switch Assembly in accordance with the Service Information. Test drive the vehicle and operate the Set (+) and Resume buttons of the speed control system to verify repair.
    • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

    No