Jaguar XJ (X351) V8-5.0L SC Technical Service Bulletin # JTB00272 Date: 121212 2010 Jaguar XJ (X351) V8-5.0L SC Page 83 Antitheft Sys - Veh. Won't Unlock/Eng. No Start With Remote Fob JTB00272NAS1

 Jaguar XJ (X351) V8-5.0L SC Technical Service Bulletin # JTB00272 Date: 121212
2010 Jaguar XJ (X351) V8-5.0L SC   Page 83
Antitheft Sys - Veh. Won't Unlock/Eng. No Start With Remote Fob
JTB00272NAS1
12-DEC-12
SECTION: 418-00
Vehicle will not Unlock with Remote Key Fob / Engine will not Start
AFFECTED VEHICLE RANGE:
CONDITION SUMMARY:
Situation:
The vehicle may not unlock with the remote key fob and / or the engine may not start when attempting to start the engine using the Stop/Start button.
When this occurs, the Smart key not found message is not displayed and the engine will not start with the remote key fob in the failsafe starting
position.
Cause:
This may be caused by component tolerances within the Central Junction Box (CJB) preventing correct functionality during engine start attempts.
Action:
In the event of a customer concern of the above, refer to the Repair Procedure outlined below.
PARTS:
C2D20176 Central junction box (CJB) Qty: 1
TOOLS:
IDS with latest IDS-DVD and Calibration File; first available on IDS-DVD131.09 v.120
Land Rover-approved Midtronics Vehicle Power Supply
Refer to Workshop Manual for any required special tools
WARRANTY:
Normal Warranty policies and procedures apply
REPAIR PROCEDURE
1. Check that the battery is correctly charged (see battery care manual), has good connections to the vehicle, and that the transit relay has been
removed.
2. CAUTION: SDD must be loaded with DVD131.09 v.120 later.
Connect a Jaguar-approved battery conditioner/power supply to the vehicle.
3. Connect the IDS to the vehicle and begin a new Symptom Driven Diagnostics (SDD) session.
4. Follow the on-screen prompts, allowing SDD to read the VIN and identify the vehicle.
5. From the Session Type selection screen, choose 'Diagnosis'.
6. Select the 'Selected Symptoms' tab, and then select one of the following:
2010 Jaguar XJ (X351) V8-5.0L SC   Page 84
^ Body > Security and locking > Handles locks and latches or
^ Powertrain > Engine system > Starting system > Will not start > Will not crank
7. Identify fault codes related to the starting system and diagnose as required.
8. Does the CJB have correct power and ground connections?
^ Record voltages at:
a. CJB Connector C3BP01D: pin numbers 16, 20, 21, 22 (12V)
b. CJB Connector C3BP01D: pin numbers 05, 25 (0V)
^ If any of the readings are incorrect, investigate and rectify if necessary before proceeding to step 9.
9. Check the operation of the hazard lamps:
^ If the hazard lamps do not operate outside the vehicle, continue to step
^ If the hazard lamps do operate outside the vehicle, do NOT continue; further diagnosis will be required to
identify the failure mode.
10. NOTE: Prior to performing the following instructions, ensure a new Central Junction Box (CJB) is available for the vehicle.
NOTE: All the vehicle keys need to be present before continuing.
CAUTION: SDD must be loaded with DVD131.09 v.120 later.
Refer to Workshop Manual section 418-00 and replace Central Junction Box (CJB).
If the IDS and battery power supply have been removed, connect a Jaguar-approved battery conditioner/power supply to the vehicle.
11. Connect the IDS to the vehicle and begin a new Symptom Driven Diagnostics (SDD) session.
12. Follow the on-screen prompts, manually enter the VIN and initiate the data collection sequence.
13. From the Session Type selection screen, choose 'Diagnosis'.
14. Select the 'Selected Symptoms' tab, and then select one of the following:
^ Body - Security and locking > Handles locks and latches or
^ Powertrain > Engine system > Starting system > Will not start > Will not crank
15. Select the Recommendations tab.
16. Read one of the SSMs listed to expose the Extras tab.
17. NOTE: When asked if a new CJB has been installed, select the 'X' and then continue with the SDD procedure. SDD will now attempt to
communicate with the new CJB to "extract" data. This is an expected result.
Select Run to perform the 'Configure new modules - Body control module' application.
18. NOTE: During the routine, the CJB will have several applications performed: Immobilization routine to enable security; software download to
load the latest level of software; CCF download to store the vehicles data to the new module; key programming routine; key validation routine;
and a fault code clear. Ensure all of the above applications complete successfully. If at any time a failure is m encountered, you will be required
to start the process over in entirety from step 17.
Continue with the SDD routine by following all on-screen prompts, including performing the software download. Do not skip the software
download routine.
19. Select the Recommendations tab.
20. Select Run to perform the Body System - Variable assist power steering curves application.
21. Follow all on screen prompts to complete this task.
22. Select the Service Function tab.
2010 Jaguar XJ (X351) V8-5.0L SC   Page 85
23. Select 'Run' to perform the Body system - Steering column calibration application.
24. Follow all on-screen prompts to complete this task.
25. When all tasks are complete, exit the current session by selecting the Session tab and then select the Close Session option.
26. Disconnect the IDS and battery charger/power supply.
27. Ensure correct operation of all vehicle systems before delivery back to the customer.
Disclaimer