Mitsubishi 3000GT Service Manual page 845

SERVICE BRAKES - Anti-lock Braking System Troubleshooting
When power flows, the ABS ECU turns on the
warning light for approximately 1 sec. while it per-
forms a valve relay test. If there is a break in the
IGNITION
J/B
ABS-ECU
harness between the ECU and the warning light,
the light illuminates only when the valve relay is
off in the valve relay test, etc.
Disconnect the hydraulic unit
connector (A-64) and the ABS-
ECU connector (E-12).
Inspect the harness' side of
both connectors for damage to
individual terminal pins.
Repair terminal pins as need-
ed.
In the ignition key "ON" posi-
tion, does voltage between ter-
minal No. 25 and ground indi-
cate battery positive voltage?
Yes
[Malfunction of ABS ECU
TSB Revision
Replace ABS ECU.