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Home >> Volkswagen >> 2018 >> Passat R-Line >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine System (Diagnostic Procedures - DDSA, DDSB) >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Vehicle Speed Signal, Checking >> Test Procedure
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Test Procedure

Step Procedure Result / Action to Take
1
  • PERFORM: Preliminary Check to verify the customers complaint. Refer to: 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 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.

DAB 6-26-18