Freelander - Warning Lights On During Long Descents
WARNING LIGHTS ILLUMINATE DURING LONG DESCENTS
Bulletin Number - 0025
Issue - 1
Date - 22.12.1999
Model - Freelander 1.8
Affected Range -
All vehicles with 1.8 K16 engine and ABS in VIN range WA 600000 to YA 699999
All vehicles with 1.8 K16 engine and ABS in VIN range YA 500000 to YA 526189
Re-Issue Information
Problem -
WARNING LIGHTS ILLUMINATE DURING LONG DESCENTS
During long descents in high altitude areas, ( NOT using Hill Descent Control), the following warning lights may illuminate and the engine runs rough.
HILL DESCENT CONTROL (HDC)
ANTI-LOCK BRAKING SYSTEM (ABS) 
TRACTION CONTROL (TC)
The condition can be temporarily rectified by stopping the vehicle and switching off the ignition. This powers down the MEMS Engine Control Module (ECM), thus resetting it.
Cause
MEMS ECM oversensitive to extreme drops in manifold pressure at high altitude.
Action
Replace ECM with modified part MKC104393.
- Refer to Workshop Manual repair number 18.30.01 for ECM replacement information.
- The new ECM must be programmed with the Security Code from the vehicle Central Control Unit (CCU) using TestBook, before the engine can be started.
- Having completed ECM installation, the ‘throttle initialisation’ procedure MUST be carried out to ensure correct engine idle behavior. Switch the ignition to position ‘II’ and fully depress and release the accelerator pedal 5 times.
Parts Information
MKC104393 Engine control module
Warranty
Use Complaint Code: 7G1Y
Engine Control Module - replace
Use S.R.O.: 18.30.01
Time allowance: 0.20Hrs
Engine Control Module - programming using TestBook
Use S.R.O.: 18.90.40/01
Time allowance: 0.40Hrs
