Test Mode 1

Check the ECM/PCM for DTCs and troubleshoot ECM/PCM (see GENERAL TROUBLESHOOTING INFORMATION ) or F-CAN loss of communication errors first, then do this diagnosis if the HDS is not available.

1. Check the No. B1 (15 A) and the No. B22 (7.5 A) fuses in the under-dash fuse/relay box.

   Are the fuses OK? 

   YES  -Go to step  2.

   NO  -Find and repair the cause of the blown fuse.

2. Remove the fuse lid panel (see FUSE LID PANEL REMOVAL/INSTALLATION ).
3. Turn the ignition switch to ON (II), and move the interior light switch to the DOOR position.
4. Connect the MPCS service connector (A) to the multiplex control inspection connector socket (B) in the under-dash fuse/relay box.
   Fig 1: Connecting MPCS Service Connector To Multiplex Control Inspection Connector Socket In Under-Dash Fuse/Relay Box

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
5. Wait 5 seconds, and watch the individual map lights. When the individual map lights flashes quickly once and then goes off, the system is in Test Mode 1.
6. Check for B-CAN DTCs indicated by the multi-information display (MID) on the gauge control module while still in Test Mode 1. Press the SELECT/RESET knob to display the next code. After you get to the last code, the display shows END. If no DTCs are stored, the display will read NO (see HOW TO DISPLAY DTCS ON THE MID OF THE GAUGE CONTROL MODULE  ).
   NOTE: If the test times out, remove the MPCS service connector, turn the ignition switch to LOCK (0), and repeat steps  3 and  4.

   Are any DTCs indicated? 

   YES  -Go to step  7.

   NO  -Go to step  11.

7. Record all DTCs and sort them into these categories:
   • Battery voltage DTCs
   • Internal error DTCs
   • Loss of communication DTCs
   • Signal error DTCs
8. Troubleshoot the DTCs in the order listed above.
9. Clear the DTCs by pressing and holding the SELECT/RESET knob for at least 10 seconds.
10. You will hear a beep to confirm the codes have been cleared. Operate the devices that failed, and recheck for codes.