Mitsubishi 3000GT Service Manual page 867

SERVICE BRAKES - Anti-lock Braking System Troubleshooting
Check flow connected with
speed sensor
Is the resistance value of the
sensor part normal?
Standard value: 0.8-1.2 k~2
Yes
Is the resistance value at the ECU
tor normal?
Standard value: 0.8-1.2 kL2
NOTE
Check speed sensor harness and connector connection
and then observe with oscilloscope. (Refer to P.3575.)
Malfunction of wheel speed
Harness wire for wheel speed
sensor circuit is broken
Is the front wheel speed sen-
sor-to-rotor clearance nor-
mal?
Standard value:
0.3-0.9 mm (.012-.035 in.)
Yes
Yes
Is the rear speed sensor
surface-to-rotor
mounting
tooth flank (all around) dis-
tance normal?
Standard value:
28.15-28.45 mm (1.11-1.12
in.)
Yes
Yes
Check the output of each
wheel speed sensor with an
oscilloscope, including the
waveform. (Refer to P.3575.)
Is the output voltage for each
wheel speed sensor over the
standard value and is the wa-
veform normal?
Yes
ABS ECU when this diagnos-
tic trouble code reoccurs
often.
Repair harness.