How to display DTCs on the gauge control module

WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Set the multiplex in Test Mode 1 (see TEST MODE 1 ).
While in Test Mode 1, the DTCs which have been detected and stored individually by various B-CAN units, will be shown one by one on the multi-information display on the gauge control module when the communication between the MICU and the gauge control module is normal. To scroll through the DTCs, press the select/reset button.

Fig 1: Gauge Control Module DTCS Display
Courtesy of AMERICAN HONDA MOTOR CO., INC.

The unit that has stored the code can be identified by the number shown on the multi-information display (MID).

MULTI-INFORMATION DISPLAY (MID) CODE REFERENCE

Unit	Code (Control Unit I.D. Number)
MICU	10
Relay control module	11
Rear MICU	12
Power tailgate control unit	31
Driver's MPCS unit	35
Gauge control module	50
Climate control unit	51
Combination switch control unit	70
HandsFreeLink control unit	94
Power seat control unit	95
Immobilizer-keyless control unit	96
AcuraLink control unit (XM receiver)	97