Main Relay - Honda Civic Service Manual

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Main Relay
Diagnostic Trouble Code {DTC} 54: Msin Relay Diagnosis
YES
N O T E : R e i n s t a l l
the fuse if it is OK.
ABS CONTROL UNIT 26P CONNECTOR
Wire side of female terminals
ABS CONTROL UNIT 22P CONNECTOR
B 1
{WHT/GRNI
\
e
PCOM
IGRN/WHT}
scoM
{BLK/WHTI
(cont'd)
19-71
Wire side of female terminals
-
With the ignition switch ON
{ll), ABS indic.tor light does
not go off.
-
With the SCS 3ervica connoc-
tor connected (s€e pag€ 19-561,
DTC 54 is indicated.
checkthe ABS +B (20 Alfuse.
Replace th6 fuso and rechock.
Ch€ck for an op€n in the 81, 82
circuit:
M e a s u r e t h e v o l t a g e b e t w e e n
body ground and the ABS control
unit 26P connector terminal No.
'14
and No. 15 individually.
Repair open in the wire betweon
the ABS control unit and under-
hood ABS tuse/relav box.
Check for a short lo body ground
in the PMR circuit:
1- Turn the ignition switch OFF.
2. Remove the pump motor relay.
3 . D i s c o n n e c t t h e A B S c o n t r o l
unit 22P connector.
4. Check for continuity between
t e r m i n a l N o . 1 9 a n d b o d y
grouno.
Repair short to body ground in
t h e w i r e b e t w e e n t h e u n d o r -
hood ABS fuse/relay box and
ABS control unit.
ls there continuity?
Check tor a short to body ground
in the PCOM, SCOM circuit:
1 . D i s c o n n e c t t h e A B S c o n t r o l
unit 26P connector.
2. Check for continuity between
body ground and the ABS con-
t r o l u n i t 2 6 P t e r m i n a l s N o . 1
and No.2 individually.
. Bepai. short to body ground in
tho PCOM circuit wire betwoen
the ABS control unit and under-
hood ABS fu3e/.olay box.
. Repair 3hort to body ground in
the PCOM or SCOM circuit wire
between the ABS control unit
and moduletor unit.
. R c p l a c e t h 6 m o d u l a t o r u n i t .
(Short circuit insido tho unit)
ls there continuity?
{ T o p a g e 1 9 7 2 )
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