Mitsubishi 3000GT Service Manual page 861

SERVICE BRAKES - Anti-lock Braking System Troubleshooting
IGNITION
ABS-ECU
9 34
23 24
a
2
a
Can other electronic control
systems communicate with
scan tool?
is fuse No. 3 normal?
Yes
Is power relay normal?
(Refer to P.3565.)
Yes
I
Disconnect ECU connector /
and check harness connector 1
With the ignition key in the
"ON" position, does voltage be-
tween ECU connector terminal
No. 18 and ground indicate the
battery positive voltage?
Yes
Is there continuity between
body harness terminals No. 9
and No. 34, and ground?
Yes
Is there continuity between
body harness connector termi-
nals No. 23 and No. 24, and
diagnosis inspection terminals
No. 4 & No. 10 or No. 7 & No.
Yes
Malfunction of ABS ECU
TSB Revision
No
Replace power relay.
Harness wire between
power relay and ECU is
broken
I
Repair harness.
Repair harness.
Repair harness.