Honda Civic 2002-2003 Service Manual page 648

ABS Components
ASS Indicator Circuit Troubleshooting (cont'd)
5. Turn the ignition switch ON (II).
6. Measure the voltage between the ASS control unit
31P connectorterminal No. 15 and body ground.
ABS CONTROL UNIT 31P CONNECTOR
IG2 IBLK/ORNI
1245678911121415
16 17 18 19
p20=21"'Y~;,->7r'7r-Y
Wire side of female terminals
Is there battery voltage?
YES-Go to step 7.
=
NO-Repair open in the wire between the No. 11
17.5A) fuse and the ASS control unit..
7. Turn the ignition switch OFF.
8. Check for continuity between the ABS control unit
31 P connectorterminal No. 19 and body ground.
ABS CONTROL UNIT 31P CONNECTOR
1 2 4 1112 1415
16 17 18
=
Wire side of female terminals
Is there continuity?
YES-Go to step 9.
NO-Repair open in the wire between the ABS
control unit and body ground (G202) .•
9. Turn the ignition switch ON (II).
19-54
10. Connectthe ABS control unit 31P connector
terminal No. 20 and body ground with a jumper
wire.
ABS CONTROL UNIT 3,P CONNECTOR
1 2 1/4 5167891/11121/1415
16
17
18[19 TiDr211/1/1/1/VT
1/1/1//
ABS IBLU/REDI
JUMPER
WIRE
L
=
Wire side of female terminals
Does the ABS indicator go off?
YES-Check for loose terminals in the ABS control
unit 31 P connector. If necessary, substitute a
known-good ABS modulator-control unit, and
recheck .•
NO-Goto step 11.
11. Remove the gauge assembly, and leave the
connectors connected. Connect the gauge
assembly connector A (22P) terminal No. 12 and
body ground with a jumper wire.
GAUGE ASSEMBLY CONNECTOR A 122P}
1 4 5 6
111213141516 17
JUMPER
WIRE
ABS IBLU/RED}
=
10
22
Wire side of female terminals
Does the ABS indicator go off?
YES~Repair open in the wire between the gauge
assembly and the ABS control unit .•
NO-Check for loose gauge assembly connectors.
If the connectors are OK, replace the printed circuit
board in the gauge assembly .•