Honda Civic Service Manual page 645

DTC 54: Main Relay Stuck OFF
1 . C h e c k t h e N o . 8 ( 2 0 A ) f u s e i n t h e u n d e r - h o o d f u s e /
r e l a y b o x , a n d r e i n s t a l l t h e f u s e i f i t i s O K .
ls the f use OK?
YES-Go to step 2.
NO Replace the fuse, and recheck.l
2. Disconnect the ABS control unit 31P connector.
3. l\4easure the voltage between the ABS control unit
c o n n e c t o r t e r m i n a l N o . 1 8 a n d b o d y g r o u n d .
ABS CONTROL UNIT 31P CONNECIOR
Wire side of female terminals
Is there battety voltage?
YES Replace the ABS modulator-control unit.l
NO-Repair open in the wire between the ABS
control unit and the under-hood fuse/relay box.I
DTC 61: lG2 Voltage
N O T E : C h e c k t h e N o . 1 1 ( 7 . 5 A ) f u s e i n t h e u n d e r - d a s h
fuse/relay box before troubleshooting.
1 . C l e a r t h e D T C , t h e n d i s c o n n e c t t h e H o n d a P G M
tesler.
2. Test drive the vehicle.
Doesthe ABS indicator come on and is DTC 61
ind icated ?
YES Go to step 3.
NO The system is OK at this time.l
3 . 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 .
4 . 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 ) .
5. Measure the voltage between the ABS control unit
3 1 P c o n n e c t o r t e r m i n a l N o . 1 5 a n d b o d y g r o u n d .
ABS CONTROL UNIT 31P CONNECTOR
ls there battery voltage?
YES Replace the ABS modulator-control unit.l
NO - Repair open in the wire between the ABS
control unit and the under-hood {use/relay box.l
Wire side of female terminals
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