Mode 1 Tset - Honda Civic 2002-2003 Service Manual

Multiplex Control System
Troubleshooting
Mode 1 Tset
1. Remove the driver's dashboard lower cover (see
page 20-59).
2. Check the NO.9 (lOA) fuse in the under-hood fuse/
relay box and the No. 10 (7.5A) fuse 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 .•
3. Turn the ignition switch ON (11I.lfthe driver's
seat be It is unbuckled the seat belt reminder will
chime 6 times.
4. Set the ceiling light to the center position and close
all the doors.
5. Connect the special tool to the multiplex inspection
connector.
6. After about 5 seconds the spotlight and ceiling light
should come on for 2 seconds, go out, then blink on
for 0.2 second to show the system is now in mode
1.
Did the spotlight and ceiling light indicate mode
I?
YES-Go to step 8.
NO-Go to step 7.
22-172
7. Check for continuity between terminal 4 of the
under-dash fuse/relay box connector J and body
ground.
Is there continuity?
YES-Replace the under-dash fuse/relay box .•
NO-Repair the open in the wire.lf the wire is ok,
repair G301 .•
8. If ther are any DTCs present, the spotlight and
ceiling light will blink to indicate the DTC(s). If more
than one DTC is present, the DTCs will be displayed
in ascending order, If there are no DTCs the
spotlight and ceiling light will not blink again after
the mode 1 indication.
Are there any OTes?
YES-Go to step 9.
NO-Go to the Mode 2 test.
9. Troubleshoot the DTC(s) in the order indicated
using the following charts.
If
a
faulty control unit is suspected, substitute it
with a known food part and recheck for DTCs,
• If the DTC(s) is still present, go to the next step
listed fa r the DTC.
• If the DTC(s) is no longer present replace the
original part.