Honda EP3 Service Manual page 570

EPS Indicator Circuit Troubleshooting
1 . Turn the ignition switch ON (ll), start the engine,
and watch the EPS indicator.
Does the EPS indicator come on?
YES lf the EPS indicator comes on and goes off, it's
OK. lf the EPS indicator stays on or blinks. go to
s t e p 1 2 .
NO Go to step 2.
Turn the ignition switch OFF, then ON (ll) again,
and watch the brake system indicator,
Does the brake system indicator come on?
YES-Go to step 3.
NO Repair open in the indicator power source
c i r c u i t . l
. B l o w n N o . 1 0 ( 7 . 5 A ) f u s e .
. Open in the wire between the No. 10 (7.5A) fuse
and gauge assembly.
. Open circuit inside the under-dash fuse/relay box,
. Faulty gauge assembly.
Turn the ignition switch OFF,
Connect a jumper wire between the gauge
assembly 22P connector terminal No. 13 and body
g r o u n d , t h e n 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 ) .
GAUGE ASSEMBLY 22P CONNECTOR
(Blue connector)
Wire side of female terminals
Does the EPS indicator come on?
YES-Go to step 5.
N O I n s p e c t t h e E P S i n d i c a t o r b u l b , i f t h e b u l b i s
O K , r e p l a c e t h e b u l b c i r c u i t b o a r d i n t h e g a u g e
a s s e m b l y . l
3 .
4 .
5. Turn the ignition switch OFF.
6. Disconnect EPS control u n it connector C (20P).
7 . 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 ) .
8. Connect EPS control unit connector C (20P)
terminal No. 6 to body ground with a jumper wire.
W i r e s d € o f l e m a l e 1 6 r m i n a s
Does the EPS indicatot come on?
YES Go to step 9.
NO Repair open in the wire between the gauge
assembly and the EPS control unit.l
Turn the ignition switch OFF.
Disconnect EPS control unit connector A (2P),
Check for continuity between EPS control unit
connector A terminal No. 2 and body ground.
EPS CONTROL UNITCONNECTOA A I2PI
w i r e s d e o f t e m a l e t e r m i n a l s
ls there continuity?
YES Check for loose or poor connections at the
E P S c o n t r o l u n i t . l f t h e c o n n e c t i o n s a r e g o o d ,
substitute a known-good EPS control unit. lf the
symptom/indication goes away, replace the
o r i g i n a l E P S c o n t r o l u n i t a n d r e c h e c k . I
N O R e p a i r o p e n i n t h e w i r e o r a b a d g r o u n d a t
G 1 5 1 , t
(cont'd)
9 .
1 0 .
' l 1 .
EPS CONTBOL UNIT CONNECTOB C {2OP)
17-47