Jaguar XF (X250) V8-5.0L SC Technical Service Bulletin # JTB00234 Date: 110816
Drivetrain - 'EDIFF SYSTEM FAULT' Message/DTC P186D-00
No: JTB00234
39
Issue: 1
Date: 16 AUG 2011
SECTION: 205
'EDIFF SYSTEM FAULT' Message Displayed with DTC P186D-00 Stored
AFFECTED VEHICLE RANGE:
XF (X250) XFR only VIN: R47154 - R56437
Model Year: 2010
XK (X150) XKR only VIN: B32853 - B34709
Model Year: 2010
CONDITION SUMMARY:
Situation:
A driver warning message, EDIFF SYSTEM FAULT, may be displayed in the message center and Diagnostic Trouble Code (DTC) P186D-00, as
well as P080A and / or P0806, will be stored in the Electronic Rear Differential Control Module (RDCM). This may be caused when the rear
differential motor is energized while the motor brake is still partially engaged, resulting in mechanical wear of the motor assembly and eventually
leading to a stuck actuator and DTC P186D-00 being stored.
Action:
In the event of a customer concern of the above, refer to the Repair Procedure outlined below to replace the rear differential locking motor assembly
and reconfigure the RDCM.
PARTS
TOOLS:
IDS with latest IDS-DVD and Calibration File; first available on IDS-DVD126_V5.05 Calibration File 79 Jaguar-approved Midtronics Vehicle
Power Supply Refer to Workshop Manual for any required special tools
WARRANTY
REPAIR PROCEDURE
REPLACE REAR DIFFERENTIAL LOCKING MOTOR
1. Refer to Workshop Manual, section 205-02: Rear Drive Axle/Differential, and replace the differential locking motor.
UPDATE THE REAR DIFFERENTIAL CONTROL MODULE SOFTWARE
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:
40
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).
NOTE:
IDS must be loaded with IDS-DVD126_V5.05 or later and Calibration File 79 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'.
6. Select the Selected Symptoms tab, and then select:
^ Electrical > Instruments> Information and message center> Message display area > Chassis
7. Select 'continue'.
8. Select the 'Recommendations' tab.
NOTE:
DTC P186D-00 must be stored in the RDCM.
9. From the Recommendations tab, select Run to configure the Rear differential control module (includes an ODST routine).
^ Follow all on-screen instructions to complete this task.
10. Exit the current session.
11. Disconnect the IDS and the Midtronics Vehicle Power Supply from the vehicle.