Engine - MIL ON/DTC's P0171/P0174 Stored
NUMBER JTB00118(ISSUE 2)
MODEL XF
DATE 03 AUG 2009
ISSUE '2' CHANGES ARE HIGHLIGHTED WITH GRAY BACKGROUND
SECTION: 303
Engine 'MIL' Illumination with DTC's P0171 / P0174 Stored - Diagnostic Procedure
AFFECTED VEHICLE RANGE
CONDITION SUMMARY:
Situation:
The engine Malfunction Indicator Lamp (MIL) may be illuminated with 'Restricted Performance' displayed in the message center and diagnostic trouble codes (DTC) P0171 and P0174 may be stored in the Engine Control Module (ECM). This may be caused by a leak(s) in the engine air intake system.
Action:
In the event of a customer concern of the above, refer to the Diagnostic Procedure outlined below.
PARTS:
AJ86892 ..................Side gaskets Qty: 2
TOOLS:
IDS with latest available software
Midtronics PSC-550 Vehicle Power Supply
VACUTEC 522-B EVAP Tester (218-00015) or equivalent EVAP Tester w/Built-in Nitrogen Generator
WARRANTY:
NOTE:
Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Always refer to DDW to obtain the latest repair time.
DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a quantity of zero.
DIAGNOSTIC PROCEDURE:
NOTE:
The Diagnostic Procedure must begin with a cold engine.
INSPECT FOR INTAKE AIR LEAKS / MONITOR LONG-TERM AND SHORT-TERM FUEL TRIMS
1. Use Special Tool 218-00015, VACUTEC 522-B EVAP Tester (or equivalent) to smoke test the following for five minutes each:
^ Down the oil level indicator tube
^ In the part-load breather
2. If any leaks are found, repair as necessary.
3. Repeat step 1 to verify repair.
CAUTION:
A Midtronics PSC-550 Vehicle Power Supply must be connected to the vehicle battery during diagnosis.
4. If no leaks are found, connect the Midtronics PSC-550 Vehicle Power Supply to the vehicle battery.
NOTE:
IDS must be loaded with latest software.
5. Connect the IDS to the vehicle and begin a new diagnostic session by entering the correct VIN for the current vehicle.
6. Follow the IDS prompts to read the vehicle configuration.
7. Select 'No' when prompted 'Do you wish to read diagnostic trouble codes?'
8. Select 'tick' to continue.
9. Start engine.
10. Using the IDS Datalogger function, monitor long-term and short-term fuel trims until engine is fully warmed-up.
^ Long-term and short-term fuel trims should remain below 10%.
11. Use Special Tool 218-00015, VACUTEC 522-B EVAP Tester (or equivalent) to smoke test the following for five minutes each:
^ Down the oil level indicator tube
^ In the part-load breather
12. Verify all engine intake air cleaner outlet pipe / hose connections are secure. (Figure 1)
13. If long-term and short-term fuel trims remain below 10% and no leaks are found during the smoke test:
^ Print out Fuel Trim Adaption report.
^ Contact Jaguar Technical HelpLine.
14. If any leaks are found, repair as necessary.
15. Repeat step 11 to verify repair.
NOTE:
Global Technical Reference (GTR) lookup sequence is as follows: GTR Home > NAS > X250 - XF > Service Information > 2009 > Workshop Manual > 3: Powertrain > 303: Engine > 303-12E Intake Air Distribution and Filtering - 4.2L, Vehicles with: Supercharger > Supercharger Outlet Pipe
16. If long-term and short-term fuel trims are above 10%, refer to Workshop Manual (GTR) section 303-12E to replace the supercharger outlet pipe gaskets (AJ86892). (Figure 2)
17. Remove the Midtronics PSC-550 Vehicle Power Supply from the vehicle battery.
18. Using IDS Datalogger function on a cold engine, monitor long-term and short-term fuel trims during road test until engine is fully warmed-up.
^ Long-term and short-term fuel trims should remain below 10% under all conditions except during wide-open throttle application.
19. If fuel trims remain above 10% (except during wide-open throttle application) and supercharger outlet pipe gaskets have been replaced:
^ Print out Fuel Trim Adaption report.
^ Contact Jaguar Technical HelpLine.
CLEAR POWERTAIN CONTROL MODULE ADAPTIONS
1. Connect the Midtronics PSC-550 Vehicle Power Supply to the vehicle battery.
2. Select the 'Vehicle Configuration' tab when Content Model is displayed.
3. From the Vehicle Configuration menu, clear the Powertrain Control Module adaptions by selecting from the drop-down menu:
^ 'Special applications' > 'Powertrain' > 'Powertrain control module adaption clear'
4. Select 'tick' to continue, following all on-screen instructions to complete this task.
^ IDS will return to the Vehicle Configuration menu when completed.
5. Exit the current session.
6. Disconnect IDS and the Midtronics PSC-550 Vehicle Power Supply from the vehicle.