LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Audi >> 2013 >> S7 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> 4.0L - Generic Scan Tool - Engine Code(S): CEUC & CRDB (Transmission DTC Table & Diagnostic Procedures) >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Vehicle Speed Signal, Checking >> Test Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test Procedure

Step Procedure Result / Action to Take
1
  • PERFORM: Preliminary Check to verify the customers complaint. Refer to PRELIMINARY CHECK
-- Was Complaint verified?
-- YES:
  • GO TO: Step 2
-- NO:
  • Gather more Information from customer about the concern
2
  • CONNECT: Scan Tool.
  • ROAD TEST: Vehicle
  • CHECK: Scan Tool to Speedometer for accuracy
  • SPECIFIED VALUE: Difference ≤ 10%
-- Was value obtained?
-- YES:
  • CONDITION: May be intermittent
  • PERFORM: Visual Inspection of wiring and component
  • CHECK: wiring for open, high resistance, short or connector for damage, corrosion, loose or broken terminals
  • REPAIR: faulty wiring or connector
  • GO TO: Step 4
-- NO:
  • GO TO: Step 3
3
  • CHECK: ABS system
  • CHECK: ABS DTC's
-- Was the ABS system OK?
-- YES:
  • CHECK: CAN Bus wiring from Instrument Cluster Control Module -J285- to ABS Control Module -J104-
  • GO TO: Step 4
-- NO:
  • REPAIR: any ABS concerns 1st
  • GO TO: Step 4
4
  • Final Procedure
  • Perform a road test to verify repair.
  • Do any DTC's return:
-- YES: -- NO:
  • Repair is complete, Generate readiness code. Refer to READINESS CODES .
  • Return vehicle to Customer