Mitsubishi 1989-1993 GALANT Service Manual page 1166

SERVICE BRAKES
ABS warning light blinks once after the ignition key is turned to the "ON"
illuminates in the "START" position and blinks once again when turned to the "ON" posItron.
[Explanation]
When power flows, the ABS ECU turns on the
warning light for approximately 1 sec. while it
performs a valve relay test. If there is a break in the
Remove
connector and ABS-ECU
connector and inspect at
the ABS-ECU
ABS ECU
TSB Revision
harness between the ECU and the warning light, the
light illuminates only when the valve relay is off in
the valve relay test, etc.
hydraulic unit
harness
Yes
Replace ABS ECU.
I