Range Rover HSE (LP) V8-4.6L (1997)
PROM - Programmable Read Only Memory: Customer Interest
Engine Controls - MIL ON/DTC 23 (Gearbox Fault)
No:
19/09/97/NAS
Ref:
WSM Section 19
*Issue:
2*
Date:
12/05/97
PRIDE V 1-19
MIL Illumination
Gearbox Fault Code 23
AFFECTED VEHICLE RANGE:
RANGE ROVER (LP)
1995-1997
* indicates updated information
SITUATION:
FALSE MIL ILLUMINATION IN COLD AMBIENT TEMPERATURES
There have been some cases in which customers have complained of a MIL illumination during low ambient temperature operation. Code retrieval
reveals a DTC P1775 and a gearbox fault 23. The problem is more prevalent on 4.6L vehicles under hard acceleration. In some cases the gearbox will
default to 3rd gear when the fault is present.
RESOLUTION:
REPLACE PROM IN GEMS ECM
In order to properly diagnose this fault the technician should retrieve P-Codes and Freeze Frame data and FAX a completed DTCR to LRNA. A new
PROM has been developed which will eliminate this problem for each affected model year. Use the following procedure to diagnose and repair this
condition.
NOTE:
The repairs outlined in this TIB are to be performed to resolve customer complaint of the symptoms described.
PARTS INFORMATION:
PRM9638
PROM MY 1995
PRM9636
PROM MY 1996
PRM9639
PROM MY 1997
LRNASTATKAnti-Static Mat
NOTE:
PROM sets will only be released with the approval of the GEMS Helpline.
WARRANTY CLAIMS:
*19.22.96
Time 1.05 hrs.
TestBook hookup, access codes, complete DTCR and
diagnostic drive cycle "C" per Service bulletin W97-007*
18.30.89/26
Time 0.50 hr
Replace PROM set
19.22.17.75
Time 0.05 hr
GEMS P-Code P1775
44.90.21
Time 0.05 hr
Transmission Code Diagnosis
COMP CODE: 6U5A