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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Rear Drive Axle >> Diagnostic Information and Procedures >> DTC C0574: Printed Circuit Board Temperature Sensor >> Circuit/System Testing

Circuit/System Testing

NOTE:

The Q48 Rear Drive Clutch Solenoid Valve is calibrated with and is part of the K47 Rear Differential Clutch Control Module. Both components must be replaced as a matched set.

C0574 02 and 0574 04

  1. Ignition ON.
  2. Verify DTC C0574 02 or 0574 04 is not set.
    • If either DTC is set 

      Replace the K47 Rear Differential Clutch Control Module.

    • If the DTC is not set 
  3. All OK.

C0574 13 and 0574 14

  1. Ignition OFF, allow the housing and the K47 Rear Differential Clutch Control Module temperature to adjust to within 0-40°C (32-104°F).
  2. Ignition ON.
  3. Verify DTC C0574 13 or C0574 14 is not set.
    • If either DTC is set 

      Replace the K47 Rear Differential Clutch Control Module.

    • If the DTC is not set 
  4. All OK.
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