Land Rover Electronic Air Suspension Fault Codes Rover Manual

							 
TECHNICAL BULLETIN 
No: LS-204-004 
Issue: 1 
Date:  22 Feb 2006 
Service Mgr Warranty Workshop Body Shop Parts CIRCULATE: TO X X X X X  
NOTE: The information in Technical Information bulletins is intended for use by trained, professional technicians with the 
knowledge, tools, and equipment required to do the job properly and safely. It informs these technicians of conditions 
that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures 
should not be performed by “do-it-yourselfers.”  
If you are not a Retailer, do not assume that a condition described affects your vehicle.  Contact an authorized Land 
Rover service facility to determine whether the bulletin applies to a specific vehicle. 
© Land Rover 2006    Page 1 
SECTION: 204-05 
Electronic Air Suspension Fault Codes 
AFFECTED VEHICLE RANGE: 
Range Rover Sport (LS)  VIN:  Up to 6A937699 
CONDITION SUMMARY: 
ELECTRONIC AIR SUSPENSION (EAS) WARNING MESSAGE AND LAMP ILLUMINATION 
A customer may report a warning message Suspension Fault – Normal Height Only from the 
message center accompanied by the Air Suspension Warning Lamp illumination. Diagnosis using the 
Worldwide Diagnostic System (WDS) reveals Diagnostic Trouble Code (DTC) C1A20-64 (pressure 
increases too slowly while filling reservoir) or C113192 (unable to pressurize gallery). No air leaks are 
found. 
Cause: The compressor exhaust valve is sticking, causing an internal air leak when the compressor is 
active. 
Action: Should a customer express concern regarding the above, refer to the Repair Procedure 
detailed in this bulletin to renew the air compressor and update the air suspension control module 
software. 
PARTS: 
  NOTE: Part RQG500090 is the latest specification air compressor with a stronger exhaust 
valve return spring. When the new air compressor is installed the air suspension control 
module software must be updated to the latest specification, using WDS disc 13 or later. 
RQG500090.......................... Air compressor assembly    Qty 1 
TOOLS: 
WDS Diagnostic Disc ......... LRCD13 or later 
WARRANTY: 
  NOTE:  Repair procedures are under constant review, and therefore times are subject to 
change; those quoted here must be taken as guidance only. Always refer to DDW to obtain the 
latest repair time. 
DDW requires the use of causal part numbers.  Labor only claims must show the causal part number 
with a quantity of zero. 
Description SRO Time 
(Hours)
Condition 
Code Causal Part  
Install air suspension compressor 
and configure software 60.50.10 0.7 42 RQG500072 
 
Normal warranty policy and procedures apply.    
						

							 
TECHNICAL BULLETIN 
No: LS-204-004 
Issue: 1 
 
 
© Land Rover 2006   2 of 2 
REPAIR PROCEDURE 
REPLACE AIR COMPRESSOR ASSEMBLY AND CONFIGURE EAS CONTROL MODULE 
SOFTWARE 
1.  Check for air leaks at the following locations: 
• Compressor 
•  Reservoir solenoid valve block 
• Reservoir 
•  Front solenoid valve block 
•  Rear solenoid valve block 
•  Intermediate connections and pipe work 
  NOTE: The air compressor assembly, RQG500090, can be identified by a yellow label on the 
end of the assembly. The yellow identification label will be replaced by case stamped 
identification. 
  NOTE:  GTR lookup sequence is as follows:   
GTR Home > NAS > Service Information/ LS-Range Rover Sport/2006 > Workshop Manuals > 
Range Rover Sport Workshop Manual > Bookmark Chassis / Suspension / 204-05 Vehicle 
Dynamic Suspension > Link Air Suspension Compressor (60.50.10) 
2.  Refer to GTR section 60.50.10 and replace the air compressor assembly with the latest specification 
compressor part number RQG500090. 
3.  Connect the diagnostic equipment to the vehicle and begin a WDS session 
4.  Determine 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 
5.  Configure the control module sofware as follows: 
•  Return to the Vehicle Configuration screen and select Module Configuration 
•  Select Configure Existing Modules 
•  Select Ride Level Control Module from the sub-menu 
•  Check the tick-box to continue and follow the on-screen instructions 
6.  Repeat step 4 to confirm the software level change. 
7.  Exit the WDS session and disconnect the diagnostic equipment from the vehicle..