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Home >> Audi >> 2017 >> RS 3 >> Repair and Diagnosis >> External Pages >> Different car >> Section 36 (GENERIC SCAN TOOL [CNTA, CNTC, CNSB] (5 Of 5) -- (A3 SEDAN)) >> Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Vehicle Speed Signal, Checking >> Test Procedure

Test Procedure

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Step Procedure Result / Action to Take
1
  • PERFORM: Preliminary Check to verify the customers concern. Refer to PRELIMINARY CHECK .
-- Was Complaint verified?
-- YES:
  • GO TO: Step 2.
-- NO:
  • GATHER more information from customer about the complaint.
  • IGNITION: OFF.
  • 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 harness connector for damage, corrosion, loose or broken terminals.
  • REPAIR: faulty wiring or connector.
  • GO TO: Step 4.
-- NO:
  • GO TO: Step 3.
  • CHECK: ABS.
  • CHECK: ABS DTC's.
-- Was the ABS OK?
-- YES:
  • CHECK: CAN Bus wiring from the Instrument Cluster Control Module -J285- to the ABS Control Module -J104-.
  • GO TO: Step 4.
-- NO:
  • REPAIR: Any ABS concerns 1st.
  • GO TO: Step 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 CODE .
  • Return vehicle to Customer.