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:
Hood Adjustment
Height Difference Adjustment
1. Verify that the height difference between the hood and the body is within
the specification.
Standard clearance
a: 2.7—6.9 mm {0.11—0.27 in}
b: 4.1—8.0 mm {0.17—0.31 in}
2. Disconnect the negative battery cable..
3. Remove the ...
Torque Converter Clutch (TCC) Control Solenoid [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
The torque converter clutch (TCC) control solenoid adjusts the hydraulic
pressure in the TCC control circuit based on the current demand from the TCM
according to the vehicle conditions.
Construction
The TCC control solenoid is installed to the solenoid con ...
Hydraulic Variable Valve Timing Control
Outline
Changes the exhaust valve timing according to engine operation conditions
to improve engine output, fuel economy, and emission performance.
Based on each input signal, the PCM determines the optimum exhaust valve
timing according to the engine operation conditions. The P ...
