F355 heater HVAC ECU chip assignment | FerrariChat
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F355 heater HVAC ECU chip assignment

Discussion in 'Technical Q&A' started by dr fabio del rio, May 10, 2017.

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  1. dr fabio del rio

    dr fabio del rio Rookie

    Dec 4, 2015
    18
    #1 dr fabio del rio, May 10, 2017
    Last edited by a moderator: Sep 7, 2017
    I have a fault with the HVAC system ECU the fan comes on full with hi heat it started doing it just a couple of times last year but now it's on all the time I have tried an ECU restart but no joy so I am rebuilding the ECU each of the 6 TCA2465G power amplifiers controls each section of the HVAC system I read a past thread that was about to reveal which chip controlled the various parts but the thread ran cold can anyone help it would save me allot of time I could however replace all the chips but would like to know which chip controls the fan speed & which controls the Bosch stepper motor I have attached a pic of the ECU internals as posted on here before many thanks in advance for any help
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