Range Rover (LP) V8-4.0L (1999)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - ECM Tune Download Procedure
No: TB/02/04/NAS
Ref:
Issue: 1
Date: June 4, 2004
ECM Tune Download Procedure
AFFECTED VEHICLE RANGE:
Range Rover (LM) All
SITUATION:
CLARIFICATION OF TUNE DOWNLOAD PROCEDURE REQUIRED
A number of situations may require the reloading of the Engine Control Module (ECM) tune on Range Rover vehicles. Because there are several areas of
potential confusion in this process, it is possible for an incorrect procedure to be followed, disrupting the download and requiring multiple attempts.
RESOLUTION:
FOLLOW CLARIFIED STEP-BY-STEP PROCEDURE
NOTE:
Whenever "compulsory" tunes are issued on a T4 disc, the T4 will initiate an automatic update process that the Technician should follow to its
conclusion. "Non-compulsory" tunes associated with certain service procedures will require the use of this TIB for guidance through the tune
installation process.
Review and follow the illustrated procedure in this TIB whenever a "non-compulsory" download of a new ECM tune is performed. The Technician
will need to follow these instructions to manually select the tune for download. Note the definition of the term "ASSEMBLY" in the context of T4
on-screen instructions:
"ASSEMBLY" = INSTALLED ECM HARDWARE plus T4 DOWNLOADED SOFTWARE
PARTS INFORMATION:
No parts required
DDW WARRANTY CLAIMS:
Information Only
Normal warranty policy and procedures apply.
Material allowance is included in labor operation.
REPAIR PROCEDURE
CLARIFICATION TO NEW RANGE ROVER ENGINE ECU TUNE UPDATE PROCESS