Solenoid - Honda Civic Service Manual

Troubleshooting
Solenoid
Diagnostic Trouble Code {DTC} 31-38: Solenoid Diagnosis
YES
ABS CONTROL UNIT 22P CONNECTOR
Wire side of female terminals
ABS CONTROL UNIT 26P CONNECTOR
FL.OUT (YEL/ALK)
-
With the ignition switch ON
(lll, ABS indicator light does
nol go oft. or ABS indic.to.
light comes on while ABS i3
functioning.
-
With the SCS servico connec-
tor connected ls€. pag€ 19-561,
DTCa 31-38 are indicstod.
Check for a short lo powor in tho
sol6noid circuitl
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. Sta rt 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.
Ropri. short to powor in thc
appropriate solanoid ci.cuit wiro
botw6.n ths ABS cont.ol unit
and modulrtor unit.
ls there battery voltage?
Check for a short to body ground
in the 3olenoid circuit:
Check tor continuity between the
appropriate solenoid circuit termi-
nal* and body ground.
. Repair short to body ground in
lhe .ppropriato solonoid circuit
wire betwoan th6 ABS control
unit and modllato. unit.
. Replaco the modul.tor unit.
Check th€ ABS control unit:
'1. Turn the ignition switch
OFF.
2. Connect the ABS control unit
22P and 26P connectors.
3. Connect the SCS service con-
4. Turn the ignition switch ON {ll}.
5. Measure the voltage between
the ABS control unit 26P con-
nector appropriate CONI circuit
terminal++ and body ground.
Check for loos€ ABS control unh
connectora. It naceslrry, aub3ti-
tutc . known-good ABS control
unit tnd recheck.
ls there approx. 3 V?
DTC
Appropriate
Connector
Appropriate
Terminal
3 1 : F R J N 22P
N o . 1
32: FR-OUT
22P
N o . 1 2
33i FL'IN
22P
N o . 1 1
34: FL OUT
22P
N o . 1 0
3s: RRIN
26P N o . 1 3
36: RR-OUT
22P
No. 21
37: RLIN 26P N o . 2 5
38: RL-OUT
26P
N o . 1 2
RL.OUT IYEL}
Wire side of female terminals
DTC
Appropriate
Terminal
3 1 : F R - l N
No. 2: SCOM
32: FR-OUT
No. 2: SCOM
33i FLIN
No. 1: rcOM
34: FL-OUT
N o . l : P C O M
35: RR{N
N o . 1 : P C O M
36: RR-OUT
No. 1: rcOM
37rRL'lN No. 2: SCOM
38: RL-OUT
No. 2: SCOM
RL.OUT (YEL}
1 9 - 6 6
(To page 19-671