Jaguar XJ (X351) V8-5.0L SC Technical Service Bulletin # JTB002602 Date: 121116
Steering - Remains In Highway Assist Mode At Low Speed
JTB00260NAS2
16 NOV 2012
ISSUE 2 CHANGES ARE HIGHLIGHTED IN GRAY
SECTION: 211-02
Steering Remains in Highway Assist Mode at Low Vehicle Speed
AFFECTED VEHICLE RANGE
CONDITION SUMMARY:
Situation:
The power steering system performance may not be as expected at low vehicle speed with Diagnostic Trouble Code (DTC) B12FB-12 stored in the
Body Control Module (BCM).
Cause:
This may be caused by software strategy in the BCM.
Action:
In the event of a customer concern of the above, refer to the Repair Procedure outlined below.
PARTS:
No parts required
TOOLS:
IDS with latest IDS-DVD and Calibration File; first available on IDS-DVD131.01 Calibration File 107
Jaguar-approved Midtronics Vehicle Power Supply
Refer to Workshop Manual for any required special tools
WARRANTY
REPAIR PROCEDURE
CAUTION:
Ensure all ignition 'ON' / ignition 'OFF' requests are carried out; failure to perform these steps may cause damage to control modules in the
vehicle.
CAUTION:
A Jaguar-approved Midtronics Vehicle Power Supply must be connected to the vehicle battery during IDS diagnosis / module
programming.
1. Connect the Jaguar-approved Midtronics Vehicle Power Supply to the vehicle battery.
2. Turn ignition 'ON' (engine not running).
2
NOTE:
IDS must be loaded with IDS-DVD131.01 or later and Calibration File 107 or later.
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'.
NOTE:
DTC B12FB-12 must be stored in the BCM.
6. Select the 'Selected Symptoms' tab, and then select:
^ Chassis > Steering system > Steering system symptoms > Steering too heavy
7. Select 'continue'.
8. Select the 'Recommendations' tab.
9. From the Recommendations tab, select 'Run' to Configure existing module - Body control module'
10. Follow all on-screen instructions to complete this task.
11. Exit the current session.
12. Disconnect the IDS and the Midtronics Vehicle Power Supply from the vehicle.