Test Mode 1

Check the PCM for DTCs and troubleshoot 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. 1 (15 A) and the No. 22 (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 access panel (see FUSE ACCESS PANEL REMOVAL/INSTALLATION ).
3. Turn the ignition switch to ON (II), and move the ceiling light switch to the middle (DOOR) position.
4. Connect the MPCS service connector (A) to the MICU service check connector socket (B) in the under-dash fuse/relay box.
   Fig 1: Identifying MPCS Service Connector And MICU Service Check Connector Socket

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
5. Wait 5 seconds, and watch the ceiling light. When the ceiling light 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 SEL/RESET button 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 GENERAL TROUBLESHOOTING INFORMATION  ).
   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 SEL/RESET button 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.