Honda Civic Service Manual page 641

4. Check for continuity between the appropriate
w h e e l s e n s o r ( + ) c i r c u i t t e r m l n a l a n d o t h e r w h e e l
s e n s o r ( + ) c i r c u i t t e r m i n a l s ( s e e t a b l e ) .
DTC
Appropiate
Terminal
Other Terminal
12
N o . 5 :
F R W ( * i
N o . 7
N o . 2
N o . 9
'14
N o . 7 :
FLW IT.)
N o . 5
N o . 2 N o . 9
t o
N o . 2 ;
RRW (T-)
N o . 5 N o . 7 N o . 9
1 8 N o . 9 :
R L W ( * )
N o . 5
N o . 7 N o . 2
ls there continuity?
YES Repair short in the wires between the
appropriate wheel sensor and the other wheel
s e n s o r h a r n e s s e s . l
NO Clear the DTC, disconnect the Honda PGM
Tester, and test-drive the vehicle. lf the ABS
indicator comes on and the same DTC is indicated,
replace the ABS modulator-control unit.l
Disconnect the harness 2P connector from the
appropriate wheel sensor and check the resistance
b e t w e e n t h e ( + ) s i d e a n d t h e ( - ) s i d e o f t h e w h e e l
sensor.
ls there less than 450 Q ?
YES Replace the wheel sensor.
NO- Repair short to wire between the appropriate
w h e e l s e n s o r ( + ) a n d ( - ) c i r c u i t s . l
DTC 21: Continuous Operation (Chipped
pulser)
1. Clear the DTC, then disconnect the Honda PGM
tesler.
2. Test-drive the vehicle at 19 mph (30 km/h) or more.
Doesthe ABS indicator come on and is DTC 21
ind icated?
YES Go to step 3.
NO The system is OK at this time.l
3. Check the pulser gear for a chipped tooth.
ls the pulser OK?
YES Check for a loose ABS control unit 31P
connector. lf necessary, substitute a known-good
ABS modulator-control unit, and recheck.l
NO Replace the driveshaft or hub unit (chipped
p u l s e r g e a r ) . 1
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