Test Procedure A (all others)
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2017 Audi S5, 2016 Audi S5, 2016 Audi S4, 2015 Audi S5, and 2015 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.
| Step |
Procedure |
Result / Action to Take |
| 1 |
- 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.
|
| 2 |
- IGNITION: OFF.
- REMOVE: Evaporative Canister. Refer to appropriate repair information.
- Plug or Cap off the Fuel Tank Leak Detection Control Module -J909 - / Fuel Tank Pressure Sensor -G400- hose going to the vent filter.
- CONNECT: Hand vacuum pump to the Fuel Tank Leak Detection Control Module -J909 - / Fuel Tank Pressure Sensor -G400- and apply 0.700 bar and see if the vacuum holds.
-- Did the vacuum hold? |
-- YES:
-- NO:
- REPLACE: Fuel Tank Pressure Sensor -G400-. Refer to appropriate repair information.
- GO TO: Step 5
|
| 3 |
- DISCONNECT: Fuel Tank Leak Detection Control Module -J909 - / Fuel Tank Pressure Sensor -G400- harness connector.
- IGNITION: ON.
- CHECK: Fuel Tank Leak Detection Control Module -J909 - / Fuel Tank Pressure Sensor -G400- harness connector terminal 1 to ground for voltage.
- IGNITION: OFF.
- SPECIFIED VALUE: Battery voltage.
-- Was Value 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 5
|
| 4 |
- REMOVE: Engine Control Module - J623-. Refer to appropriate repair information.
- DISCONNECT: Fuel Tank Leak Detection Control Module -J909 - / Fuel Tank Pressure Sensor -G400-. Refer to appropriate repair information.
- CHECK: Fuel Tank Leak Detection Control Module -J909 - / Fuel Tank Pressure Sensor -G400- harness connector terminal 2 to the Engine Control Module - J623- harness connector T94 / 69 for resistance.
- CHECK: Fuel Tank Leak Detection Control Module -J909 - / Fuel Tank Pressure Sensor -G400- harness connector terminal 3 to the Engine Control Module - J623- harness connector T94 / 38 for resistance.
- SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
-- Were Values obtained? |
-- YES:
- REPLACE: Fuel Tank Leak Detection Control Module -J909 -. Refer to appropriate repair information.
- GO TO: Step 5
-- 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 5
|
| 5 |
- Final Procedure
- Perform a road test to verify repair.
-- Does the original DTC return? |
-- YES:
- CHECK: Engine Control Module -J623- 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: Engine Control Module -J623-. 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.
|