How To Display DTCs On the Gauge Control Module

Set the B-CAN System Diagnosis test Mode 1 (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE 1 AND TEST MODE 2 (WITHOUT THE HDS) ).
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.
Information display type

Fig 1: Identifying Screen Display - Information Display Type
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Multi-information display type

Fig 2: Identifying Screen Display - Multi-Information Display Type
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.

CONTROL UNIT REFERENCE TABLE

Control Unit	Control Unit I.D. Number
MICU	10
Gauge control module	50
Door multiplex control unit (Power window master switch)	30
Immobilizer-keyless control unit	96
Climate control unit	51
HandsFreeLink control unit	94
Automatic lighting control unit	72
Parking and back-up sensor control unit	9A
Power tailgate control unit	35
Power seat control unit	95