Mitsubishi 1989-1993 GALANT Service Manual page 1146

SERVICE BRAKES -
MAIN
IGNITION
REVERSE SIDE
DATA LINK
CONNECTOR
Anti-lock Braking System Troubleshooting
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Can other electronic control _ No . Scan. tool related mal-
systems communicate with
scan tool?
With the ignition key in the _
" O N " p o s i t i o n , does ,thf
Disconnect ECU connector
and check harness connec-
tor.
I
With the ignition key in the
"ON" position, does voltage
between ECU connector ter-
minal No. 18 and ground in-
dicate the battery voltage?
Is there continuity between
b o d y h a r n e s s t e r m i n a l s
No. 9, No. 20 and No. 34, and
ground?
I s t h e r e c o n t i n u i t y b e t w e e n Harness wire between
body harness connector ter-
minals No.23 and No.24, and
Malfunction of ABS ECU
TSB Revision
fuse and replace fuse.
Yes
No ) Is power relay normal?
(Refer to P.35-74.)
Yes
Yes
ECU ground line broken
Yes
No
data link connector and
ABS ECU is broken.
Repair harness.
Yes
Replace ABS ECU.