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Home >> Audi >> 2012 >> A5 2.0T Quattro, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Generic Scan Tool [CAEB] (Engine DTC Table) (Coupe) >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Can-Bus Terminal Resistance, Checking >> Test Procedure

Test Procedure

Step Procedure Result / Action to Take
  • PERFORM: Preliminary Check to verify the customers complaint. Refer to PRELIMINARY CHECK .
-- Was Complaint verified?
-- YES: -- NO:
  • GATHER more information from customer about the complaint.
  • IGNITION: OFF.
  • DISCONNECT: Data Bus On Board Diagnostic Interface -J533- harness connector.
  • The Engine Control Module -J623- must remain connected for the following step.
  • CHECK: Data Bus On Board Diagnostic Interface -J533- harness connector terminals 6 to 16 for resistance.
  • Specified value: 60 to 72 Ω (at approx. 20° C).
-- 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 CAN-BUS TERMINAL RESISTANCE, CHECKING - 4 .
-- NO:
  • REMOVE: Engine Control Module - J623-. Refer to appropriate service information.
  • CHECK: Data Bus On Board Diagnostic Interface -J533- harness connector terminal 6 to the Engine Control Module - J623- harness connector T94 / 67 for resistance.
  • CHECK: Data Bus On Board Diagnostic Interface -J533- harness connector terminal 16 to the Engine Control Module - J623- harness connector T94 / 68 for resistance.
  • SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
-- Were Values obtained?
-- YES: -- NO:
  • 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 CAN-BUS TERMINAL RESISTANCE, CHECKING - 4 .
Refer To The Final Procedure Below;