Engine Controls - Software Download Recovery Process

No: 37-47

DATE: 01-23-2008

MODEL:
XC90 - with engine code 85 and 98

M. YEAR:
2005 -

SUBJECT:
Recovery Process for Interrupted Software Downloads to TCM/ECM

REFERENCE:
VIDA

Description

Software downloads to ECM/TCM might fail, and when the node status is checked in the network view in VIDA it can appear as if the TCM and/or the ECM are not responding. This is most often not the case and the software can be downloaded using the method described below.

Service

Always ensure that the Midtronics power supply is connected to the vehicle throughout the download procedure. Also ensure that VIDA and VCT2000/DiCE are updated to the latest versions of software and firmware.

If an ECM or TCM upgrade fails during the download the following steps should be taken without paying attention to the status shown in the "Network" view in VIDA. Go to the "Software" view and follow the steps below.

1. Purchase software product number 8691289 (TCM-reload)

2. Go to Advanced tab under Software and click "Send Prog"

3. Check if the ECM and TCM hardware numbers can be read. If the nodes can be read go to step 5, if not try first to re-read the node and if still not successful continue to step 4.

4. Disconnect the power supply for the node that can't be read, reconnect and go back to step 3. (De-power by either pulling the fuse or disconnect the node. If you have an external power supply to the VCT2000 you can instead disconnect the ground cable at the battery. See end of this bulletin for power supply specification)

5. Close the Advanced screen, but do NOT send reset. (i.e., the car should remain in prog mode)

6. Download the software package.

7. If the download fails, a communication error screen will pop up. Just click "Yes" to retry.

8. Repeat from step 2 until the software download is successful.











Graphic procedure





External Power supply for VCT2000 and DiCE