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Home >> Audi >> 2010 >> S4 Automatic DCT >> Repair and Diagnosis >> External Pages >> Different car >> Section 194 (Anti-Lock Brake System - Vehicle Dynamics Control (VDC) (Diagnostics)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC C0054 BLS On Malfunction >> Wiring Diagram

DTC C0054 BLS On Malfunction: Wiring Diagram

WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Stop Light Switch Wiring Diagram
G07666303Courtesy of SUBARU OF AMERICA, INC.
DIAGNOSTIC PROCEDURE CHART

Step Check Yes No
1 CHECK STOP LIGHT SWITCH. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the stop light switch connector.
  3. Measure the resistance of stop light switch terminals.

    Terminals 

    No. 2 - No. 3: 

 Is the resistance 1 MΩ or more when switch is OFF (when pedal is not depressed)? Go to step 2.  Replace the stop light switch. < Ref. to STOP LIGHT SWITCH . >
2 INTERVIEW CUSTOMERS. 
Make sure that the operation was performed in which accelerator pedal and brake pedal were depressed simultaneously (with depressing brake pedal with left foot).		 Were the acceleration pedal and brake pedal depressed simultaneously? System is normal. (DTC may be recorded while brake is applied during driving.) Go to step 3  .
3 CHECK VDCCM&H/U. 
  1. Connect all connectors.
  2. Clear the memory. < Ref. to CLEAR MEMORY MODE . >
  3. Perform the Inspection Mode. < Ref. to INSPECTION MODE . >
  4. Read the DTC.
 Is the same DTC displayed? Replace the VDCCM only. < Ref. to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM&amp;H/U). > Go to step 4  .
4 CHECK OTHER DTC DETECTION.  Is any other DTC displayed? Perform the diagnosis according to DTC. < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > Temporary poor contact occurs.
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