Wheel Sensor - Honda Civic Service Manual

Troubleshooting
Wheel Sensor
Diagnostic Trouble Gode {DTC) ll-18: Wheol S€n3ol Diagnosis
NoTE: The ABS indicator light comes on when only the drive wheels are turning, signal disturbance is
detected, etc. Therefore,
test-drive the car at a speed of 12 mph (20 krn/h) or more after turning the ignition:witch from OFF
to ON fll), and if the ABS
indicator light does not come on, the svstem is OK.
0Tc
Appropriate Terminal
(0)srDE
11) SrD€
r 1, 12 (Right-front)
No.8: FRo
N o . 2 1 : F R I
13, 14 (Left-front)
No. 10: FLo
N o . 2 3 : F L 1
15, 16 {Right-rear) No. {: RRo
N o . 1 7 : R R l
17, 18 (Left-rear) No.6: RLo No. 19: RLI
RLl (LT BLU}
FRl (GRN/BLKI
Wire side ol female terminals
N O
NOTE:
. Normal voltage: Approx.2 V
' 0 V: Replace the ABS controt unit.
. 4 V or more indicates a short to power.
A8S CONTROL UNIT 26P CONNECTOR
RRO
IBLU/YELI
RR1 IGRN/YELI
FL1 IGRN/ORN}
-
With the ignition switch ON
{ll), ABS indicator tighr doe.
noi go off,
-
Aftsr driving, ABS indicatot
light comes on.
-
With the SCS so.vice connac-
tor conn€c,ted {soe pege 19-561,
DTCs 11-18 a.e indicrted.
Chock lhe wheol sensor ci.cuit:
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 . l l e a s u r e t h e
r e s i s t a n c e
between the appropriate wheel
sensor (0) and (1) circuit termi,
. Reprir op€n in the l0l or {0 cir-
cuit wiro, or shon to thc {01 cir-
cuit wi.o in thc {11 circuit wirc
bctween ths ABS control unit
and approprieto wheel a6nsor.
. R.pl.ce th€ epp.opri.te wheal
3€nloa.
ls the resistance OK?
/Frontr 750
- 1050 o/20"C, 68.F
\
\Rear: 850- 1150 O/20.C, 68"F /
Check toru short to body ground
in the wheel senso. circuit:
Check for continuity between the
ABS control unit 26P connector
appropriate wheel sensor (0) cir
cuit terminali and body ground.
. Rapair short to body ground in
t h 6 ( 0 ) o r l l l c i l c u i t w i . .
bctwa.n th6 ABS control unit
and appropdaie whoel lonsor.
. Rep|'c6 tho appropriatc whcel
sanlor.
Chock tor a sho.t to powe. in tho
wheel3en3or circuit:
1. Reconnect the ABS control unit
26P connector,
2. Start the engine.
3. Measure the voltage between
the ABS control unit 26P con-
nector appropriate wheel sen-
s o r ( 0 ) c i r c u i t t e r m i n a l a n d
body ground.
Ropair rhon to powo. in the l0l
or lll circuit wire batw.en th€
ABS cont.ol unit and .pplopriata
whccl !€naoa,
ls there 4 V or more?
fio page 19-65)
19-64