Mazda CX-5 Service & Repair Manual: ABS Control
Outline
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ABS control occurs when wheel slip is determined by the DSC CM (based on the four ABS wheel-speed sensors). Then, the DSC HU inlet and outlet solenoid valves are operated and brake fluid pressure is controlled accordingly to prevent wheel lock-up.
Feature
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Use of ABS control during emergency braking or on slippery road surfaces allows directional stability to be maintained, steerability ensured, and stopping distance to be reduced.
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The ABS control system has independent front wheel control and unified control (select low) for the rear wheels.
NOTE:
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Select low control: A control system in which the left and right vehicle wheel speeds are compared and brake fluid pressure is controlled according to the wheel most likely to lock-up.
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Construction
Block Diagram
Operation
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When the DSC CM determines wheel slip conditions based on the signals from the ABS wheel-speed sensors during braking, the DSC CM operates the DSC HU inlet and outlet solenoid valves, reducing and maintaining brake fluid pressure in accordance with the wheel slip factors. Then, when the wheel slip condition has passed, brake fluid pressure is increased and maintained, ensuring braking with a constantly stable brake force.
Control condition transition diagram
ABS
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ABS Wheel Speed Sensor And ABS Sensor Rotor
Purpose/Function
The ABS wheel-speed sensor and ABS sensor rotor detect the rotation condition
of each wheel and transmit this information to the DSC HU/CM.
The signal from the ABS w ...
Other materials:
Brake Pedal Inspection
Pedal Height Inspection
1. Measure the distance from the center of the upper surface of the pedal pad
to the insulator and verify that it is as specified.
If not within the specification, inspect the following items and repair or
replace the applicable part if there is any malfunct ...
Shift And Select Mechanism [C66 M R]
Purpose, Function
The shift and select mechanism moves the shift fork to change gears according
to the operation of the shift lever in the cabin.
Construction
Shift control module
The moving parts of the shift control module are vertically positioned..
In th ...
Rear Drive Shaft Removal/Installation
CAUTION:
Performing the following procedures without first removing the ABS wheel?speed
sensor may possibly cause an open circuit in the harness if it is pulled by
mistake. Before performing the following procedures, remove the ABS wheel?speed
sensor (wheel side) and fix it to an ...
