Pilot V6-3.5L (2004)
Body Control Systems: Testing and Inspection
Multiplex Control System Troubleshooting
Troubleshooting
Special Tools Required
MPCS service connector 07WAZ-001010A
Mode 1
Description:
Mode 1 is a communication line and CPU self test. If a problem occurs on a communication wire or with an individual control unit the multiplex system
will store a DTC as long as the fault is still present.
To Enter Mode 1:
1. Check the No. 9 (10 A)fuse in the driver's under-dash fuse/relay box and the No. 13 (7.5 A) fuse in the passenger's 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. Connect the special tool to the multiplex control inspection connector (A).
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 go off for 0.2 seconds, then blink and beep
for 0.2 second. This means that you are in Mode 1 of the self-diagnosis function. Check self-diagnosis function Mode 1 for a diagnostic trouble
code (DTC).
Did the multiplex system enter Mode 1?
YES - Go to step 5.
