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Home >> Audi >> 2014 >> A5 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 614 (3.0L - Generic Scan Tool - Engine Code(S): CCBA, CGXC & CTUB (Diagnostic Procedures) (Sedan)) >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Can-Bus Terminal Resistance, Checking >> Test Procedure B (A4 / S4, A5 / S5, Q5)

Test Procedure B (A4 / S4, A5 / S5, Q5)

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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 complaint.
2
  • 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
-- NO:
  • GO TO: Step 3
3
  • REMOVE: Engine Control Module - J623-. Refer to appropriate repair 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:
  • REPLACE: Engine Control Module -J623-. Refer to appropriate repair information.
  • GO TO: Step 4
-- 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
4
  • Final Procedure
  • Perform a road test to verify repair.
-- Does the original DTC return?		 -- YES:
  • CHECK: Data Bus On Board Diagnostic Interface -J533- harness connector for any damaged, pushed-out pins.
  • REPAIR: As necessary.
  • Clear the DTC's. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY
  • Repair is complete. Generate Readiness Code. Refer to READINESS CODE .
  • Return vehicle to Customer.
  • If all electrical connections are OK:
  • REPLACE: Data Bus On Board Diagnostic Interface -J533-. Refer to appropriate repair information.
  • Repair is complete. Generate Readiness Code. Refer to READINESS CODE .
  • Return vehicle to Customer.
-- NO:
  • Perform the diagnostic procedure for any DTC's.
  • If no DTC's return the repair is complete.
  • Return vehicle to customer.
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