Suspension- 'Suspension Fault' Message/DTC's Set

No.: LS204-007

Issue: 1

Date: June 12, 2006

SECTION: 204-05

Electronic Air Suspension Diagnostic Trouble Codes

AFFECTED VEHICLE RANGE:

Range Rover Sport (LS) VIN: 6A900129 to 6A952770

CONDITION SUMMARY:

IMPROVED EAS SOFTWARE AVAILABLE TO RESOLVE DTC

Situation:
A customer may report that a two-chime warning occurs and that a flashing amber warning lamp turning to a steady amber lamp is illuminated. The warning message "Suspension Fault" will also appear. Investigation using the Worldwide Diagnostic System (WDS) or the Integrated Diagnostic System (IDS) may reveal one of the following Diagnostic Trouble Codes (DTC):

^ C1A37-01 or C1A38-01 (Front/Rear Crosslink Valve)

^ U2007-19 (Valve circuit current above threshold)

A software calibration sensitivity issue can incorrectly report a low current at the cross-link valve in cold conditions. The DTCs may be logged under these conditions.

Action:
Should a customer express concern regarding the above, refer to the Repair Procedure detailed in this bulletin to update the air suspension Ride Level Control Module software.





TOOLS





WARRANTY

REPAIR PROCEDURE

INSTALL LATEST RIDE LEVEL CONTROL MODULE SOFTWARE TUNE

1. If WDS has patch file 3 (WDS CD13 - Patch File 3 (or later)) installed or IDS DVD 100 with patch file 1 (or later) is being used proceed to step 6.

NOTE:
A software patch installation help file located on GTR provides instructions for the patch file installation process and could take up to six minutes to download depending on connection speed. For information on how to confirm that the patch file has been correctly installed onto WDS/IDS, refer to the applicable Patch Process Help File located in GTR. Global Technical Reference (GTR) lookup sequence is as follows:

GTR Home > NAS > Diagnostics/LS - Range Rover Sport/2006 > Patch Files > "Patch Process Help File - T4WDS or IDS" link.

2. Logon to GTR from an internet connected PC and download the WDS/IDS Patch Process Help File as follows:

^ Select 'Home' from the menu at the top of the main page.

^ From the menus on the left of the page, select 'Diagnostics' as the 'Information Type' and select the relevant model and model year.

^ From the 'All Information' results, select 'Patch Files'.

^ Click the appropriate 'Patch Process Help File - T4WDS or IDS' file link.

NOTE:
This could take up to twenty minutes to download depending on connection speed.

3. Using the help file as a guide, follow the instructions to download and save WDS CD13 Patch File 3 (or later) or, when available, IDS DVD 100 Patch File 1 (or later).

4. Install the software patch file 'WDS CD13 - Patch File 3' (or later) into T4WDS or 'IDS DVD 100 - Patch File 1' (or later) into IDS.

5. Verify that WDS/IDS successfully restarts.

NOTE:
A Midtronics PSC-550 Vehicle Power Supply must be connected to the vehicle battery during diagnosis and module configuration.

6. Connect the diagnostic equipment to the vehicle and begin a WDS or IDS session.

7. Note the current software levels of the Ride Level Control Module as follows:

^ Enter the vehicle details.

^ Select the 'Vehicle Configuration' tab.

^ Select 'Module Information'

^ Select 'Network integrity test'

^ Note the software part numbers displayed on the screen.

NOTE:
During module configuration, the on-screen software part number information that WDS/IDS will display can be checked against the software part number noted in step 7 above. If the same software part number is displayed, the vehicle already has the desired tune level and the software download process can be discontinued.

8. Configure the Ride Level Control Module software as follows:

^ Return to the Vehicle Configuration' screen and select 'Module Configuration'.

^ Select 'Configure Existing Modules'.

^ From the sub-menu, select 'Ride Level Control Module'

^ Click the [Check Mark] tick-box to continue and follow the on-screen instructions.

^ Note the on-screen software part number information that WDS/IDS will display.

9. Compare the Ride Level Control Module software part number displayed on WDS/IDS to the software part number noted in step 7 above.

10. If the same software part number is displayed, terminate the tune download.

11. If a different software part number is displayed, complete the tune download to update the software.

12. After the tune download is complete, click the [X] tick-box to skip the air suspension ride height calibration process prompted by WDS/IDS.

13. Exit the WDS/IDS session and disconnect the diagnostic equipment from the vehicle.





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