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Home >> Jeep >> 2009 >> Commander Overland, RWD >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> Anti-Lock Brake System - Electrical Diagnostics >> DTC Troubleshooting >> C1242-G Sensor Input Signal Performance >> Diagnostic Test

Diagnostic Test

  1. VERIFY DTC IS ACTIVE 
    1. Turn the ignition on.
    2. With the scan tool, read and record DTCs.
    3. With the scan tool, read and record Environmental Data to help identify the conditions in which the DTC was set.
    4. With the scan tool, erase DTCs.
    5. Start the engine.
    6. Perform ECU initialization with drive test. Perform ABS VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Antilock Brake (ABS) - Standard Procedure .
      WARNING: To avoid possible serious or fatal injury, check brake capability is available before road testing.
    7. Test drive the vehicle by turning the vehicle left or right in a curving manner at a velocity greater than 20 km/hr (12 m.p.h.).
    8. Park the vehicle.
    9. With the scan tool, read ABS DTCs.

      Does this DTC reset?

      Yes 

      • Go to step  2

      No 

  2. CHECK THE DYNAMICS SENSOR INSTALLATION 
    NOTE: Dynamics Sensor installation and mounting bolt torque is crucial for proper operation.
    1. Turn the ignition off.
    2. Check the Dynamics Sensor for damaged, modified, and bent mounting brackets.
    3. Check the Dynamics Sensor mounting bolts for a loose or over tightened condition.

      Were any problems found?

      Yes 

      No