Honda Civic Service Manual page 649

Brake System Indicator Gircuit Troubleshooting
Brake system indicator does not come on
'1.
Discon nect the m ultiplex contro I unit l3Pconnector
and the ABS control unit 31P connector.
2. Check for continuity between the ABS control unit
3 l P c o n n e c t o r t e r m i n a l N o , 2 1 a n d b o d y g r o u n d .
ABS CONTROL UNIT 31P CONNECTOR
Wire side of female terminals
ls there continuity?
YES Repair short to body ground in the wire
between the multiplex control unit and the ABS
c o n t r o l u n i t . l
NO Go to multiplex control system
trou bleshooting lsee page 22''172).a
Brake system indicator does not go off
1 . T u r n t h e i g n i t i o n s w i t c h O N { l l ) .
2 . R e l e a s e t h e p a r k i n g b r a k e .
Does the brake system indicatot go ofl after
several seconds?
YES The system is OK at this time.l
NO Go to step 3.
3. Check the brake fluid level.
ls the level OK?
YES Go to step 4.
NO Refill the brake fluid, and recheck.l
4. Check the ABS indicator.
Does the ABS indicator stay on?
YES Read the ABS DTC (see step 1 on page 19-32).
and do the applicable troubleshooting for the DTC
NO Go to step 5.
5. Turn the ignition switch OFF.
6 . D i s c o n n e c t t h e A B S c o n t r o l u n i t 3 l P c o n n e c t o r .
7 . C o n n e c t t h e A B S c o n t r o l u n i t 3 1 P c o n n e c t o r
t e r m i n a l N o . 2 1 a n d b o d y g r o u n d w i t h a j u m p e r
ABS CONTROL UNIT 31P CONNECTOR
(cont'd )
W i r e s r d e o f l e m a l e l e r m i n a l s
19-55