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Home >> Mazda >> 2013 >> 5 Grand Touring >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> On-Board Diagnostic [Multiplex Communication System] >> Determining Open Circuit Location (Ms-Can) [Multiplex Communication System] >> DTC output pattern and malfunctioning location >> Notes

DTC output pattern and malfunctioning location: Notes

Cross (x): Communication error-related DTC and failed moduleHyphen (-): Error signal-related DTC may be indicated

DTC DISPLAY DTC output pattern
DTC output module DTC
IC(1)
(Instrument cluster)
U0156:00           x
U0164:00   x        
EATC(1)
(Climate control unit)
U0155:00 x          
U0156:00           x
U0423:68 -          
ACU(1)
(Audio unit)
U0155:00 x          
U0156:00           x
U0193:00       x    
U0197:00         x  
Information display(2) U015500HEC x         -
U016400EATC   x       -
None EATC   -       -
U018400ACU     x     -
None ACU     -     -
M-MDS display module  [Fail] display pattern 
IC x          
EATC   x        
ACU     x      
Item  Diagnostic result 
Possible cause and inspection item A B C D E F
Reference page A B C D E F
(1) The DTC is displayed on M-MDS.
(2) The DTC is displayed on the information display.