Mitsubishi 1989-1993 GALANT Service Manual page 1162

35-42
SERVICE BRAKES
ABS warning light illuminated after the engine is started and remains on.
[Explanation]
This is the symptom when the ABS ECU does not
power up due to broken ECU power circuit, etc.,
when the fail safe function operates and isolates the
system or when the warning light drive circuit is
short circuited.
Check the on-board diagnostic output and if there is
no output voltage or if the scan tool and ABS ECU
cannot communicate, there is a good possibility
that power is not flowing to the ECU.
MAIN
IGNITION
FUSIBLE
SWITCH
LINK @
I
10
HU
Is there on-board diagnostic
output? (Is there communi-
cation with scan tool?)
Does diagnostic trouble
code output display normal
codes?
I
I
I
Short in harness between
TSB Revision
Caution
If there is no output of diagnostic trouble
l
codes, there is a good possibility that the
fail safe is functioning.
No
I
Yes
I
combination meter.
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tic trouble code check
chart. (Refer to P.35-38.)
or replace