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GAP Diagnostic 2023-09-12 All Rights Reserved
User Manual G3 units: Version 37, Firmware V4.0
4.11.3 Recovery method
General method
The firmware of the IIDTool has an algorithm to recover an ECU following a failed update. This is par
-
ticularly useful when the ECU no longer answers diagnostic commands. In such cases, the IIDTool
detects this condition and will activate the recovery method. Just follow the instructions on screen and
when the message “Toggle Fuse” is displayed, disconnect and reconnect the fuse that powers the
ECU. The tool detects the fuse insertion and starts the update automatically.
BCM Body Control and IPC Instrument Pack (L319-04, L320-05)
Please consult the recovery instructions for these ECUs.
Notes
Once started, the re-flashing process is independent from the App and is only handled by the
IIDTool. The App is only used to display the current status and can be left in the background, fore-
ground or closed. If the mobile device gets disconnected from the IIDTool, the App will recover auto-
matically once reconnected to the IIDTool.
Vehicle Reset (L319, L320):
In some cases, a soft reset may be sufficient in order for all systems to return to normal. The routine is
found in the service test menu (
.