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Can S12XHZ enter debug mode if it is programmed to boot and operate in special single chip mode with mode switch set to "no" ?

Question asked by k l on Aug 10, 2017
Latest reply on Aug 16, 2017 by Daniel Martynek

An instrument cluster freezes / locks up randomly in a moving vehicle. It got locked up when the truck went over railroad trucks or when a trailer was attached via the fifth wheel. It also happened in truck bay with no shock to it.

Could it be that the due to noises in the battery, the S12XHZ enters debug mode and remains stuck at a point until battery is disconnected and connected again ?