Map Controlled Engine Cooling Thermostat -F265-, CHECKING
WARNING: This page is about a different car, the 2010 Audi Q7, 2009 Audi Q7, 2008 Audi Q7, and 2007 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.
General Description
The Map Controlled Engine Cooling Thermostat -F265- can either open mechanically from engine coolant temperature, or from the Engine Control Module -J623-. Providing power to an electrical element inside the Map Controlled Engine Cooling Thermostat -F265- for more precise operation of the cooling system based on a mapping table that is contained inside the Engine Control Module -J623-.
Special tools and workshop equipment required
- Multimeter.
- Wiring Diagram.
- Scan Tool.
Test Requirements
- Fuses OK.
- Battery voltage OK.
- Switch OFF All electrical and electronic accessories.
- Vehicles with Auto. Transmission, ensure Selector Lever position is in "P".
- Vehicles with Manual Transmission, ensure Shifter Lever position is in "N" with Parking Brake applied.
- Coolant Temperature: ≥ 80° C.
- Observe all safety precautions:
.
- View clean working conditions:
.
- For Hybrid vehicles refer to:
.
Test Procedure
| Step |
Procedure |
Result / Action to Take |
| 1 |
- PERFORM: Preliminary Check to verify the customers complaint. Refer to
.
-- Was Complaint verified? |
-- YES:
-- NO:
- GATHER more information from customer about the complaint.
|
| 2 |
- IGNITION: OFF.
- DISCONNECT: Map Controlled Engine Cooling Thermostat -F265- harness connector.
- CHECK: Map Controlled Engine Cooling Thermostat -F265- component connector terminals 1 to 2 for resistance.
- SPECIFIED VALUE: 5 - 15 Ω (@ approx. 20° C).
-- Was Value obtained? |
-- YES:
-- NO:
- REPLACE: Map Controlled Engine Cooling Thermostat -F265-. Refer to appropriate repair information.
- GO TO: Step 5
|
| 3 |
- IGNITION: ON.
- CHECK: Map Controlled Engine Cooling Thermostat -F265- 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.
- CHECK: Map Controlled Engine Cooling Thermostat -F265- harness connector terminal 2 to the Engine Control Module -J623- harness connector T94 / 11 for resistance.
- SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
-- Was Value obtained? |
-- YES:
- TIP: The Map Controlled Engine Cooling Thermostat -F265- may fail under loaded operation; please swap a known good Map Controlled Engine Cooling Thermostat -F265- prior to continuing to the next step.
- 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.
- If all electrical connections are OK:
- REPLACE: Engine Control Module -J623-. Refer to appropriate repair information.
- Clear the DTCs. Refer to
.
- Repair is complete. Generate Readiness Code. Refer to
.
- 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.
|