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G - Tweeters
H - Twiddlers
I - Twiddler loudspeaker
L - Woofers
NIT pre-diagnosis
Whenever a fault attributable to the NIT is found, please compile the following check list to provide the factory
with all the information necessary for diagnosis before starting any work:
1. Description of problem found;
2. NIT SW version (see following procedure for identifying software version number);
3. Frequency (is problem sporadic or continuous?)
4. Resolvability (is fault still present after performing "bus sleep" procedure?).
Diagnosing failed NIT software update
If, after updating the NIT software on the aforementioned vehicles, the audio system enters limited
functionality IFS emergency mode, this means that the software update procedure has failed. If this
occurs, the audio system may still be updated correctly by inserting the software update disc again and
repeating the software update procedure.
To check if the audio system is in IFS emergency mode, proceed as follows:
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