Mitsubishi 3000GT Service Manual page 878

SERVICE BRAKES - Anti-lock Brakina Svstem Troubleshooting
INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE CODES
Code Nos. 11, 12, 13, 14 Wheel speed sensor system
(open-circuited)
Output is provided when signal is not input due to breakage of the (+) or (-) wire
of one or more of the four wheel speed sensors.
tion.
E-i 2.
Disconnect connectors and
l
make measurements on har-
ness side.
Resistance between 74-75,
l
Check wheel speed sensor output
voltage.
Check trouble symptoms..
Replace ABS-ECU.
Code No. 15 Wheel speed sensor system (output signal
abnormal)
Output is provided when output signal produced by any of wheel speed sensors is
abnormal (excluding short- and open-circuits). (Improper number of rotor teeth or
the like)
OK
Replace ABS-ECU.
l
l
l
Check wheel speed sensor.
Check wheel bearing.
Probable cause
l
l
l
l
l
OK
Check harness between each wheel
Wheel speed sensor defective
Harness and connector defective
ABS-ECU defective
wheel speed sensor and ABS-ECU,
Replace wheel speed sensor.
Replace rotor.
Wheel speed sensor installation defective
Wheel speed sensor defective
Rotor defective
Wheel bearing defective
ABS-ECU defective