The Communication Line Check

While in the self-diagnostic mode, the Communication Line Check starts after the LCD Segment Check.

Fig 1: Screen Display - Communication Line Check

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If the communication line is OK, the word "OK" is indicated on the multi-information display (MID). If there is a communication line error, the word "NG" is indicated on the MID.

Indication pattern 

There is a malfunction in the communication line between the F-CAN and gauge control module. The B-CAN is OK at this time. Check for DTCs in the PCM and troubleshoot any DTCs found. If no DTCs are found, go to B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Fig 2: Multi-Information Display - Communication Line Error Between F-CAN And Gauge Control Module

Courtesy of AMERICAN HONDA MOTOR CO., INC.

There is a malfunction in the communication line between the B-CAN and gauge control module. The F-CAN line is OK at this time. Go to B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Fig 3: Multi-Information Display - Communication Line Error Between B-CAN And Gauge Control Module

Courtesy of AMERICAN HONDA MOTOR CO., INC.

There is a malfunction in the communication line between the gauge control module and the F-CAN and the B-CAN. Check for DTCs in the PCM, and troubleshoot any DTCs found. If no DTCs are found, go to B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Fig 4: Multi-Information Display - Communication Line Error Between Gauge Control Module And F-CAN And B-CAN

Courtesy of AMERICAN HONDA MOTOR CO., INC.