Solenoid - Honda Civic 1998 Service Manual

Troubleshooting
Solenoid
Diagnostic Trouble Code {DTC) 31-38: Solenoid Diagnosis
ABS CONTROL UNIT 22P CONNECTOR
-
With the ignition switch ON
(ll). ABS indicator light does
not go off, or ABS ifldicator
light comes on while ABS is
tunctioning.
-
With the SCS sewice connec-
tor connoctod lsoe page 1$50).
DTCS 31 -38 are indicated.
WIRE SIDE OF FEMALE TERMINALS
ABS CONTROL UNIT 26P CONNECTOR
wlRE SIDE OF FEMALE TERMINALS
FL-OUT {YEL/BLK}
DTC
T e r m i n a l
3 1 : F R l N
22P
N o . 1
32:FR-OUT 22P
N o . 1 2
3 3 r F L l N
22P
N o . 1 1
34i FL-OUT
22P
N o . 1 0
3 5 : R R - l N 26P N o . 1 3
36: RR-OUT
22P
N o . 2 1
3 7 i R L ' I N 26P N o . 2 5
38:RL-OUT
26P N o . 1 2
Chock tor a short to pow€r in the
solenoid 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 22P and 26P connectors.
2. Start the engine.
3, Measure the voltage between
the ABS control unit connector
a p p r o p r i a t e s o l e n o i d c i r c u i t
terminal* and body ground.
R 6 p a i r s h o r t l o p o w e r i n t h e
appropriate solenoid circuit wire
between the ABS control unit
and modulator unh,
check lor a 3hort to bodY ground
in the solenoid circuili
Check {or continuity betlveen the
appropriate solenoid circuit termi
n a l * a n d b o d y g r o L r n d .
. Repair shon to body ground in
the appropriato solenoid circuit
wire between tho ABS control
unit end modulator unit.
. Replace the inodulator unit.
Check the ABS control unit:
1. Turn the ignition switch OFF.
2. Connect the ABS control unh
22P and 26P connectors.
3. Connect the SCS service con-
nector,
4. Turn the ignition switch ON (ll).
5. Measure the voltage between
the ABS control unit 26P con-
nector appropriate COM circuit
terminal** and body ground.
Chock lor loose ABS control unit
conneclors. lf oecessary, substi-
tule a known-good ABS control
unit and recheck.
ls there approx. 3 V?
RL.OUT IYEL}
oTc
T e r m i n a l
3 1 : F R I N
No. 2: SCOM
32:FR-OUT
N o . 2 : S C O M
3 3 : F L - l N No. 1: PCO[,
34: FL-OUT
N o . l : P C O M
3 5 i R R l N
N o . 1 : P C O M
36: RR'OUT
No. 1: PCO[,
3 7 : R L I N No. 2: SCOM
38: RL-OUT
No. 2: SCOM
RL.OUT {YELI
YES
PCOM
1 9 - 5 4
(To page l9-55)
(GRN/WHTI