Mazda CX-5 Service & Repair Manual: ABS Control
Outline
-
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
-
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.
-
The ABS control system has independent front wheel control and unified control (select low) for the rear wheels.
NOTE:
-
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.
-
Construction
Block Diagram
Operation
-
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:
Steps for Determining the Correct Load Limit
Steps for Determining Correct Load Limit-
(1) Locate the statement “The combined weight of occupants and cargo should never
exceed XXX kg or XXX lbs” on your vehicle's placard.
(2) Determine the combined weight of the driver and passengers that will be riding
in your vehicle.
(3) Subt ...
Aerodynamic
Purpose/Function
For improved aerodynamics, under covers are installed to the under-surface
of the vehicle.
Construction
The vehicle is equipped with the following (3) under covers.
Front under cover No.1
Front under cover No.2
Floor under co ...
Purge Solenoid Valve
Purpose, Function
Introduces evaporative gas absorbed by the charcoal canister to the intake
manifold.
The purge solenoid valve opens according to the control signal from the PCM.
Construction
The purge solenoid valve is installed in the engine compartment.
...
