Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLAND ROVER2009RANGE ROVER SPORT (LS) V8-4.4LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTRANSMISSION CONTROL SYSTEMSTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSDRIVETRAIN - DTC P186D IN DIFFERENTIAL CONTROL MODULE
2009 Land Rover Range Rover Sport (LS) V8-4.4L
Drivetrain - DTC P186D In Differential Control Module
2009 Land Rover Range Rover Sport (LS) V8-4.4LSECTION Drivetrain - DTC P186D In Differential Control Module
No: LTB00200
Issue: 1
Date: 02 FEB 2009
SECTION: 205
DTC P186D Stored in Rear Differential Control Module - Repair Procedure
AFFECTED VEHICLE RANGE
CONDITION SUMMARY:
Situation:
Diagnostic Trouble Code (DTC) P186D may be stored in the rear differential control module along with the warning message 'Transmission Fault Stop Safely' displayed and suspension lowering occurring. This may be caused by a mis-reading of the rear differential actuator motor feedback sensor.
Action:
In the event of a customer concern of the above, refer to the Repair Procedure outlined below to reconfigure the rear differential control module.
PARTS:
No parts necessary; information only
TOOLS
WARRANTY
REPAIR PROCEDURE
RECONFIGURE THE REAR DIFFERENTIAL CONTROL MODULE
CAUTION:
A Midtronics PSC-550 Vehicle Power Supply must be connected to the vehicle battery during IDS diagnosis / module programming.
1. Connect the Midtronics PSC-550 Vehicle Power Supply to the vehicle battery.
NOTE:
IDS must be loaded with software release DVD116 Patch File 4 or later.
2. Connect the IDS to the vehicle and begin a new diagnostic session by entering the correct VIN for the current vehicle.
3. Follow the IDS prompts to read the vehicle configuration.
4. Select 'No' when prompted 'Do you wish to read diagnostic trouble codes?'
5. Select 'tick' to continue.
6. Select the 'Vehicle Configuration' tab when Content Model is displayed.
7. From the Vehicle Configuration menu, configure the 'Rear differential control module' by selecting from the drop-down menu:
^ 'Module programming' > 'Configure existing module' > 'Rear differential control module'
8. Select 'tick' to continue, following all on-screen instructions to complete this task.
^ IDS will return to the Vehicle Configuration menu when completed.
9. Exit the current session.
10. Disconnect IDS and the Midtronics PSC-550 Vehicle Power Supply from the vehicle.
Issue: 1
Date: 02 FEB 2009
SECTION: 205
DTC P186D Stored in Rear Differential Control Module - Repair Procedure
AFFECTED VEHICLE RANGE
CONDITION SUMMARY:
Situation:
Diagnostic Trouble Code (DTC) P186D may be stored in the rear differential control module along with the warning message 'Transmission Fault Stop Safely' displayed and suspension lowering occurring. This may be caused by a mis-reading of the rear differential actuator motor feedback sensor.
Action:
In the event of a customer concern of the above, refer to the Repair Procedure outlined below to reconfigure the rear differential control module.
PARTS:
No parts necessary; information only
TOOLS
WARRANTY
REPAIR PROCEDURE
RECONFIGURE THE REAR DIFFERENTIAL CONTROL MODULE
CAUTION:
A Midtronics PSC-550 Vehicle Power Supply must be connected to the vehicle battery during IDS diagnosis / module programming.
1. Connect the Midtronics PSC-550 Vehicle Power Supply to the vehicle battery.
NOTE:
IDS must be loaded with software release DVD116 Patch File 4 or later.
2. Connect the IDS to the vehicle and begin a new diagnostic session by entering the correct VIN for the current vehicle.
3. Follow the IDS prompts to read the vehicle configuration.
4. Select 'No' when prompted 'Do you wish to read diagnostic trouble codes?'
5. Select 'tick' to continue.
6. Select the 'Vehicle Configuration' tab when Content Model is displayed.
7. From the Vehicle Configuration menu, configure the 'Rear differential control module' by selecting from the drop-down menu:
^ 'Module programming' > 'Configure existing module' > 'Rear differential control module'
8. Select 'tick' to continue, following all on-screen instructions to complete this task.
^ IDS will return to the Vehicle Configuration menu when completed.
9. Exit the current session.
10. Disconnect IDS and the Midtronics PSC-550 Vehicle Power Supply from the vehicle.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.