Outline
The TCS control actuates torque reduction through engine control, as well as using brake control to control traction.
NOTE:
Engine control: Engine output is lowered by fuel cut and ignition timing control to reduce the traction, preventing driving wheel slip.
Brake control: Brake fluid pressure from the hydraulic unit (HU) to the driving wheel that is slipping is increased, operating the brake and preventing driving wheel slip.
Features
The left and right wheels are controlled at the same time by engine control. Therefore, when the road surface friction coefficients differ between the left and right wheels, proper torque reduction cannot be performed separately for each wheel. When this occurs, torque reduction is performed by independent left and right wheel brake control, providing more stable vehicle control.
The TCS OFF switch allows the driver to optionally enable/disable the TCS control at the driver's discretion.
When both driving wheels are stuck, traction control according to the driver's operation can be performed by inhibiting the TCS control.
The TCS control returns to normal operation automatically at the next ignition cycle.
Construction
Block Diagram

Operation
TCS control detects driving wheel spin based on the signals listed below, sends torque reduction request signals to the PCM, and also controls the solenoid valves and pump motor in the DSC HU/CM.
Vehicle wheel speed signals from the font and rear ABS wheel-speed sensors
Engine torque signal from the PCM
Steering angle signal from the EPS CM
Yaw rate and lateral-G signals from the SAS control module
Fluid pressure signal from the brake fluid pressure sensor (built into the DSC HU/CM)
Precaution [Dynamic Stability Control (DSC)]
Tcs Off Switch InspectionFuel Pump Relay
Purpose, Function
Controls the fuel pump on/off according to control signals from the PCM.
The fuel pump is operated only at engine start or when the engine is running
to improve safety.
Construction
The fuel pump relay is installed in the relay and fuse block.
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Manual Transaxle Removal/Installation [C66 M R]
Removal
1. Disconnect the negative battery cable..
2. Remove the plug hole plate..
3. Remove the front under cover No.2..
4. Remove the front under cover No.1..
5. Remove the splash shield..
6. Drain the manual transaxle oil..
7. Disconnect and/or remove the following parts in the engin ...
Keyless Warning Alarm
Purpose
The keyless warning alarm notifies the driver that the remote transmitter
cannot be verified or the steering lock cannot be released.
Function
When the instrument cluster receives the keyless warning alarm request signal
sent from the start stop unit via the CAN sig ...