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
...
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:
Canister Vent (Cv) Solenoid Valve
U.S.A. And CANADA
Purpose, function
Seals the atmosphere side of the charcoal canister during EVAP leak check
monitoring.
Construction
Included in the charcoal canister.
The CV solenoid valve is consists of O-rings.
Operation
According to the ...
Steering Shaft Inspection
1. Inspect the steering column for excessive play and damage.
2. Verify that the clearance between the projection on the steering column shown
in the figure and the bracket is less than 2.0 mm {0.079 in}.
If the clearance between the projection and bracket is 2.0 mm {0.079 in}
or ...
Brake/Clutch Fluid
Inspecting Brake/Clutch Fluid Level
The brakes and clutch draw fluid from the same reservoir.
Inspect the fluid level in the reservoir regularly. It should be kept at MAX.
The level normally drops with accumulated distance, a condition associated with
wear of brake and clutch linings. If it is ...
