Engine Controls - Poor High Altitude Engine Performance/DTC's
LTB00429NAS231 MAY 2012
ISSUE 2 CHANGES ARE HIGHLIGHTED IN GRAY AND ASTERISKS
SECTION: 303
Poor Engine Performance at High Altitude
AFFECTED VEHICLE RANGE:
CONDITION SUMMARY:
Situation:
The engine may exhibit poor performance / reduced power while driving at altitudes above 8,200 feet (2,500 meters) and the engine Malfunction Indicator Lamp (MIL) may be illuminated with Diagnostic
Trouble Codes (DTC) P0101, P0172, and/or P0175 stored in the Engine Control Module (ECM). This may be caused by the calibration altitude limit.
Action:
In the event of a customer concern of the above, refer to the Repair Procedure outlined below to update the ECM software.
PARTS:
No parts required
TOOLS:
IDS with latest IDS-DVD and Calibration File; first available on *IDS-DVD130.01 Calibration File v107* Land Rover-approved Midtronics Vehicle Power Supply
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.
Normal Warranty policies and procedures apply
REPAIR PROCEDURE
UPDATE THE ENGINE CONTROL MODULE SOFTWARE
CAUTION:
Ensure all ignition 'ON' / ignition 'OFF' requests are carried out; failure to perform these steps may cause damage to control modules in the vehicle.
CAUTION:
A Land Rover-approved Midtronics Vehicle Power Supply must be connected to the vehicle battery during IDS diagnosis / module programming.
1. Connect the Land Rover-approved Midtronics Vehicle Power Supply to the vehicle battery.
2. Turn ignition 'ON' (engine not running).
NOTE:
IDS must be loaded with *IDS-DVD130.01 v107* or later.
3. Connect the IDS to the vehicle and begin a new Symptom Driven Diagnostics (SDD) session.
4. Follow the on-screen prompts, allowing SDD to read the VIN and identify the vehicle.
5. From the Session Type selection screen, choose 'Diagnosis'.
NOTE:
One or more of the following DTCs must also be stored in the ECM: P0101, *P0172*, or P0175.
6. Select the 'Selected Symptoms' tab, and then select:
^ Electrical > Instruments > Warning lamps > Engine malfunction lamp > Lamp illuminated or
^ Powertrain > Engine system - Engine performance > Poor acceleration and lack of power
7. Select 'continue'.
8. Select the 'Recommendations' tab.
9. From the Recommendations tab, select 'Run' to configure the 'Powertrain control module'
^ Follow all on-screen instructions to complete this task.
10. Exit the current session.
11. Disconnect the IDS and the Midtronics Vehicle Power Supply from the vehicle.
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