blower resistor no bus communication code 9360 - Mercedes-Benz Forum

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post #1 of 4 (permalink) Old 02-19-2014, 02:38 PM Thread Starter
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Exclamation blower resistor no bus communication code 9360

hello, im bryan.
new to forums as of today. i have just finished replaceing an evaporator core on a 07 cls550. after putting it all back together the blower is innoperable w/ a/c code :

9360 (communication error of ac bus with component a32n1 blower regulator).

any quick advise on trouble shooting would be awesome. fyi already tried new resistor and tore dash down 4 times to ensure all connections are correct and intact.
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post #2 of 4 (permalink) Old 02-20-2014, 08:19 AM Thread Starter
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no one?
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post #3 of 4 (permalink) Old 02-20-2014, 12:53 PM
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The only thing I can suggest at this point would be to find a shop with the MB star system and have the system scanned for codes. At least that would narrow it down to the part/module that is causing the fault.
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post #4 of 4 (permalink) Old 02-21-2014, 10:15 AM
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Just brainstorming....

There being just the one connector to blower controller (A32n1), voltage, ground and LIN ( Local Interconnect Network )... and noting that your tried a second A32n1 module, very slim chance both are bad. But it could happen.

Check the plug and the connector for bent/misaligned pins, especially for the Blue/Green wire ( LIN connection). If all is well you may need to get to the back of the center console control unit and see if the connection to it is secure with all the pins where they are supposed to be etc. Physical integrity of the LIN wire is next I guess. Having to pretty much remove the entire dash assembly for the core replacement, wire may have been cut somewhere.

May have to have all the codes cleared. There are reset procedures for the C, E and S class but cant find anything specific for the 07 CLS. STAR may be your only answer at that point.
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