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:
Bsm Indicator Light Does Not Flash While Under Bsm Indicator Light Flashing
Conditions (With Combination Switch Operation (Turn Signal Switch)) [Blind Spot
Monitoring (Bsm)]
Description
BSM indicator light does not flash while under BSM indicator light-flashing
conditions (with combination switch operation (turn signal switch))
The BSM indicator light does not flash or illuminate continuously,
but the cond ...
Door Lock Switch Inspection
Driver's Side
1. Disconnect the negative battery cable..
2. Remove the door lock switch..
3. Verify that the continuity is as indicated in the table.
If the continuity is not as indicated in the table, replace the door lock
switch.
Passenger's Side
1. Disconnec ...
Clutch Fluid Inspection [C66 M R]
NOTE:
A common reserve tank is used for the clutch system and brake system.
1. Verify that the clutch fluid is between the MIN mark and the MAX mark.
Verify that there is no clutch fluid leakage then add clutch fluid to the
level between the MIN mark and the MAX mark..
...
