Honda Civic Service Manual page 539

EPS Components
I
1 2 .
EPS Indicator Circuit Troubleshooting (cont'dl
Turn the ignition switch OFF.
Disconnect EPS control unit connector C (20P).
Turn the ignition switch ON (ll).
Does the EPS indicator come on?
YES-Repair short to ground in the YEUBLU wire
between the gauge assembly and the EPS control
unit, or replace the bulb circuit board in the gauge
a s s e m b l y . l
NO-Go to step 15.
Measure the voltage between EPS control unit
c o n n e c t o r C ( 2 0 P ) t e r m i n a l N o . 1 0 a n d b o d y g r o u n d .
EPS CONTROL UNIT CONNECTOR C I2OP)
Wire side of female terminals
ls there battery voltage?
Y E S - G o t o s t e p 1 6 .
NO-Repair open in the wire between EPS control
unit connector C (20P) and the No, 10 (7.5A) fuse. t
1 3 .
1 4 .
17-48
16. Measure the voltage between EPS control unit
connector A (2P)terminal No.
'1
and body ground.
EPS CONTROL UNITCONNECTON
A (2P}
+B (WHT/BLUI H
I t r
v
-L
1 7 .
1 8 ,
1 9 .
20.
W i r e s i d e o f f e m a l e t e r m i n a l s
ls there battery voltage?
YES-Go to step 17.
NO-Check for a blown No. 18 (604) fuse in the
under-hood fuse/relay box or open/short in the
WHT/BLU wire between the under-hood fuse/relay
box and the EPS control unit.l
Turn the ignition switch OFF.
Reconnect EPS control unit connector A (2P).
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 ) .
Measure the voltage between EPS control unit
connector C (20P)terminal No. 8 and body ground.
EPS CONTROL UNIT CONNECTOR
C (2OP)
Wire side of female terminals
ls therc about 10 V?
YES Check for loose or poor connections at the
EPS control unit. lf the connections are good,
substitute a known-good EPS control unit. lf the
symptom/indication goes away, replace the
original EPS control unit and recheck.l
NO Repair short to ground in the BRN wire
between the data link connector and the EPS
c o n t r o l u n i t . I