Mitsubishi 1993 3000GT, Technical Information Manual

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ANTI-LOCK BRAKING SYSTEM (ABS)
With the use of ABS in 4WD models, not only is the
“driving" of a 4WD model improved but the "stopping"
performance is also greatly improved. Driving
performance is well balanced in all ways from better
performance on dry roads to better performance under
all conditions such as slippery road surfaces, etc. The
ABS is a 4 sensor, 2 channel system, and is basically
the same as that equipped in the GALANT 4WD.
3-34
DRIVE-CONTROL COMPONENTS - Anti-lock Braking System (ABS)
14F0059
Part name No. Function
Wheel speed sensor 1 Sends a wheel speed signal from each wheel to the ECU.
Sensor G-sensor 2 Sends an ON/OFF signal to the ECU depending on vehicle
acceleration.
Stop lamp switch
3
Sends a signal to the ECU indicating whether the brake pedal is
pressed on not.
Hydraulic unit (HU)
4
Controls braking pressure for each wheel depending on the signal
from the ECU.
Includes built-in select-low valve
Motor reltly
5
Is turned ON by the ECU signal and drives the pump motor in HU.
Actuator Valve relay 6 Is turned ON by the ECU signal and supplies power to the
solenoid valve in HU.
ABS warning lamp 7 Is in the combination meter and lights up when there is trouble iO
ABS.
Diagnosis connector
8
Outputs diagnosis codes.
Electronic control unit (ECU)
9
Drives the hydraulic unit, etc. based on signals from the various
sensors.
Select-low valve 10 Is in HU and matches brake pressure in the rear right and left
wheels to the pressure on the low side.