Engine, A/C Controls - Excessive Condenser Fan Noise
No: LTB00262Issue: 2
Date: 29 MAR 2010
ISSUE '2' CHANGES ARE NOTED WITH ASTERISKS
SECTION: 412
High Level of Condenser Fan Noise
AFFECTED VEHICLE RANGE:
Range Rover (LM)
VIN: AA304426-AA317568
Model Year: 2010
CONDITION SUMMARY:
Situation: The condenser fan may exhibit a high level of noise in high ambient temperature conditions at low vehicle speeds or while standing still. This may be caused by the Heating, Ventilation, and Air Conditioning (HVAC) condenser fan duty command to the Engine Control Module (ECM).
*NOTE:
Vehicles that have had Q089 completed will not require the update outlined below; it is included in Q089.*
Action: In the event of a customer concern of the above, refer to the Repair Procedure outlined below to update the ECM and HVAC control module software.
PARTS:
No parts necessary
TOOLS:
IDS with IDS-DVD121_V6.01 or later and Calibration 30 or later 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 policy and procedures apply.
REPAIR PROCEDURE
RECONFIGURE THE ECM AND HVAC CONTROL MODULE
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.
* NOTE:
IDS must be loaded with IDS-DVD121_V6.01 or later and Calibration File 30 or later.*
2. Connect the Integrated Diagnostic System (IDS) to the vehicle and begin a new Symptom Driven Diagnostics (SDD) session.
3. Follow the on-screen prompts, allowing SDD to read the VIN and identify the vehicle.
4. From the Session Type selection screen, choose 'Diagnosis'.
5. Select the Selected Symptoms tab, and then select:
^ Electrical > Climate control system > Other > Noises
6. Select continue~.
7. Select the Recommendations tab.
8. From the Recommendations tab, select Run to configure the Powertrain Control Module
^ Follow all on-screen instructions to complete this task.
NOTE: Two levels of software may be displayed for the HVAC control module, but the user will only be able to select one. Selecting this will load both software updates to the HVAC control module.
9. From the Recommendations tab, select Run to configure the Heating, Ventilation, and Air Conditioning 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.