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acc codes, decoded
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Posted by bobc [Email] (#473) [Profile/Gallery] (more from bobc) on Fri, 14 Aug 2009 20:10:02 Share Post by Email
In Reply to: Re: climate control noise, TJ Butler, Fri, 14 Aug 2009 09:43:29
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Bear in mind that the ability of the ACC to self diagnose is limited. So the codes *can* be misleading.

the number on the left is the "number of codes present". You have two codes, "13" is the first code, but you will have to scroll to get the other one.


1 Control module - Internal control module malfunction
2 Cabin temperature sensor - Open circuit or short to B+
2 Cabin temperature sensor - Short-circuit to ground
3 Solar sensor - Open circuit or communication error
4 Mixed-air temperature sensor, LH - Open circuit or short to B+
4 Mixed-air temperature sensor, LH - Short-circuit to ground
5 Mixed-air temperature sensor, RH - Short-circuit to ground
5 Mixed-air temperature sensor, RH - Open circuit or short to B+
6 Stepping motor, air-mixing flap, LH - Open circuit, short to B+ or short
to ground
7 Stepping motor, air-mixing flap, LH - Jammed flap
8 Stepping motor, air-mixing flap, LH - Loose flap
8 Stepping motor, air-mixing flap, RH - Loose flap
9 Stepping motor, air-mixing flap, RH - Open circuit
9 Stepping motor, air-mixing flap, RH - Short-circuit to ground
10 Stepping motor, air-mixing flap, RH - Jammed flap
12 Stepping motor, air distribution flap - Open circuit
12 Stepping motor, air distribution flap - Short-circuit to ground
13 Stepping motor, air distribution flap - Jammed flap
14 Stepping motor, air distribution flap - Loose flap
18 Heat exchanger solenoid - Open circuit, short-circuit to ground
18 Heat exchanger solenoid - Short-circuit to B+
19 Circulation pump - Open circuit, short-circuit to ground
19 Circulation pump - Short-circuit to B+
20 Control voltage, fan - Short-circuit to B+
20 Control voltage, fan - Short-circuit to ground
21 Direct current motor, air recirculation flap - B+ open circuit or shorted to ground
22 This fault code means the ACC software is corrupt, this will require re-flashingby a dealer using tech2 Most ACC systems will work normally with this code.
23 Sensor ground - Ground to sensors shorting to B+
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