Honda ACCORD HYBRID 2005 Service Manual page 1771

• BODY •
T r o u b l e s h o o t i n g - B - C A N S y s t e m D i a g n o s i s T e s t M o d e 1 a n d T e s t M o d e 2
( w i t h o u t t h e H D S )
1. Check the No. 7 (10 A) fuse and No. 21 (7.5 A) fuse
in the under-dash fuse/relay box.
Are the fuses OK ?
Y E S — G o t o step 2.
NO—Find and repair the cause of the b l o w n f u s e . i
2. Remove the left kick panel (see page 20-45).
3. Turn the ignition switch ON (II).
4. Connect the MPCS Service connector (A) to the
MCIC socket (B) in the under-dash fuse/relay box.
5. Wait 5 seconds, then watch the ceiling light.
6. If there is a DTC, the ceiling light and ignition
switch light w i l l blink, pause, then repeat the DTC
as long as the ignition switch ON (II).
Is there a repeating DTC?
YES—Count the blinks, then go to step 7.
N O — G o t o step 8.
7. A b o u t 1 second after y o u go into self-diagnosis
Mode 1, the ceiling light w i l l indicate the DTC, and
repeat it every 3 seconds. If there is more than one
DTC, the system w i l l indicate t h e m in ascending
order, beginning f r o m the DTC w i t h the lowest
numerical value. Troubleshoot the DTCs as
indicated below:
• DTC 2, 3, 4 and 5 simultaneously: Check for an
open in the BLU w i r e between multiplex
integrated control unit D11 and relay module 17,
BRN/RED w i r e between multiplex integrated
control unit J4 and door multiplex control unit
No. 16, LT GRN w i r e between multiplex
integrated control unit X27 and c o m b i n a t i o n
switch control unit No. 4, BRN/YEL w i r e between
multiplex integrated control unit N28 and gauge
control module terminal No. 25. If the w i r e is OK,
substitute a known-good under-dash fuse/relay
box (multiplex integrated control unit), under-
hood fuse/relay box, power w i n d o w master
switch, wiper/washer switch and gauge one at a
t i m e , in that order, and recheck for the DTCs after
each substitution.
• DTC 1 only: Go to MICU input test (see page
22-116).
• DTC 2 only (no other DTCs present): Go to the
relay m o d u l e input test. If all inputs are OK,
substitute a k n o w n - g o o d relay m o d u l e and then a
MICU, one at a t i m e , and then check for DTCs. If a
DTC recurs after a substitution, replace that unit.
• DTC 3 only (no other DTCs present): Go to the
door multiplex control unit input test. If all inputs
are OK, substitute a k n o w n - g o o d door multiplex
control unit and then a MICU, one at a t i m e , and
then check for DTCs. If a DTC recurs after a
substitution, replace that unit.
• DTC 4 only (no other DTCs present): Go to the
c o m b i n a t i o n switch control unit input test. If all
inputs are OK, substitute a k n o w n - g o o d wiper/
washer switch and then a MICU, one at a t i m e ,
and then check for DTCs. If a DTC recurs after a
substitution, replace that unit.
• DTC 5 only (no other DTCs present): Go to the
gauge control m o d u l e input test. If all inputs are
OK, substitute a known-good gauge control
m o d u l e and then a MICU, one at a t i m e , and then
check for DTCs. If a DTC recurs after a
substitution, replace that unit.
(cont'd)
22-89