Honda 2004 Odyssey Service Manual page 1923

Multiplex Control System
Troubleshooting
Special Tools Required
MPCS service connector 07WAZ-001010A
Mode 1
Descripition
Mode 1 is a communication line and CPU self test. If a
problem occurs on a communication wire or with an
individual control unit, multiplex system will store a
DTC as long as the fault is still present.
To Enter Mode 1
1. Check the No. 9 (10A) fuse in the driver's under-
dash fuse/relay box and the No. 13 (7.5A) fuse in
the Passenger's under-dash fuse/relay box.
Are the f uses OK ?
YES Go to step 2.
NO Find and repair the cause of the blown fuse.
2. Connect the special tool to the multiplex control
system (MPCS) inspection connector (A).
22-244
A
07WAZ-001010A
3. Turn the ignition switch ON (II). If the driver's seat
belt is unbuckled, the seat belt reminder will beep
five times.
4. After about 5 seconds, the ignition key light should
come on and the beeper should beep for 2 seconds,
then go off for 0.2 second, then blink and deep for
0.2 second. This indicated that the system is in
Mode 1.
MODE 1: Ignition Key Light and Beeper
ON
OFF
2 sec.
Did the multiplex system enter Mode 1?
YES Go to step 5.
NO Go to step 6.
0.2 sec.
0.2 sec.