Campaign - Cruise Control Software Update
No: SB142Ref:
Issue: 1
Date: 11/07/03
SERVICE ACTION
Cruise Control ECU Software Configuration Improvements
AFFECTED VEHICLE RANGE:
Discovery Series II (LT) 3A767790 to 4A832224
Build Date 26 February 2002 to 28 August 2003
SITUATION:
CRUISE CONTROL "SURGE" AT TARGET SPEED
Discovery Series II vehicles have a cruise control software configuration issue, that may result in a surge of approximately to 2-3 mph around the target speed.
RESOLUTION:
INSTALLATION OF UPDATED SOFTWARE
NOTE:
This Service Action is for un-sold vehicles held in Retailer inventory only.
Prior to customer delivery of vehicles within the above VIN range, download the cruise tune using TestBook/T4 CD "Archive 21" or later. Both 2003 and 2004 model year vehicles in Retailer inventory are affected.
PARTS INFORMATION:
LRN0002LABEL Campaign Label Qty 1 (NOTE: Sold in quantity pack of 100)
TOOL INFORMATION:
TestBook/T4 disc "Archive 21" or later
AS400 WARRANTY CLAIMS:
H142 (Option A) Time 0.30 hrs.
Download cruise control tune
H142 (Option B) Time 0.40 hrs.
Download cruise control tune. Includes Drive-in/Drive-out allowance
DDW WARRANTY CLAIMS:
Warranty claims should be submitted quoting program code B142 together with the option code. This will result in payment of stated time and where applicable parts/miscellaneous expense.
The SRO information listed in the Table has been included for information only. Do not enter the SRO onto the claim.
Normal warranty policy and procedures apply.
Material allowance is included in labor operation.
REPAIR PROCEDURE
INSTALL UPDATED CRUISE CONTROL SOFTWARE
NOTE:
It is important to verify that the unsold vehicle is subject to this Service Action and has not had the repair performed at the Port of Entry.
1. Verify that the vehicle is subject to the Service Action.
2. Connect TestBook/T4 to the vehicle and load disc Archive 21 or a later version.
CAUTION:
The hand brake must be set and the transmission placed in the neutral ("N") position before undertaking the following steps.
3. Engage the hand brake and place the transmission is in the neutral ("N") position.
4. Turn ignition to position "II".
5. Depress instrument cluster cruise master switch to place it in the ON (switch illuminated) condition.
6. Follow the on-screen instructions and select "Diagnostic System".
7. Follow the on-screen instructions and select "Discovery, 2003MY".
8. Follow the on-screen instructions, enter the vehicle VIN and press "Continue".
9. Confirm the vehicle information and press "Continue".
10. Follow the on-screen instructions and select "Cruise Control/Petrol/Vehicle Maintenance/Tune Information".
NOTE:
At this point, TestBook/T4 will read the tune values from the vehicle and provide a display of those values.
11. Compare the tune values to the values listed below:
12. If the vehicle contains different tune values than those listed in the Table perform the tune installation.
INSTALL UPDATED TUNE
NOTE:
Download of the tune values from TestBook/T4 to the vehicle will take only a few seconds.
1. Follow the on-screen instructions in TestBook/T4 and select Program ECU/Set new tune 4.6L engine on the screen.
2. When programming is completed follow the on-screen instructions and select "Tune Information".
3. Note the tune values and verify that they match those listed in the table above.
4. Disconnect TestBook/T4 from the vehicle.
NOTE:
The cruise control ECU requires some adaption time after programming. Whenever possible the vehicle should be driven approximately twenty miles with cruise engaged. Customers should be advised of the adaption process on vehicles where a complete length test drive is not possible.
5. Perform a road test and verify that the downloaded tune has resolved the issue of cruise surge.
INSTALL CAMPAIGN LABEL
NOTE:
Campaign labels may have multiple Campaign numbers written on them if multiple campaigns are performed at the same time.
1. When all specified repairs have been accomplished, prepare the campaign label (LRN0002LABEL) as follows:
a) Place the label on a hard surface.
b) Use a ballpoint pen to neatly write/scribe in the bare aluminum areas of the label the following information:
^ Service Campaign code "B142"
^ Your retailer code
^ The date of repair
2. Clean all grease and dirt from the radiator support member.
3. Peel the completed campaign label from the backing paper and position it on the cleaned area.
4. Roll the label with the special roller tool to ensure proper adhesion.