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Mazda CX-5 Service & Repair Manual: TCM [Fw6 A EL, Fw6 Ax EL]

Purpose/Function

Function Table


Control item

Main control content

Shift point control

Automatic shift control

(D position)

Driving mode

Normal mode

  • Mode selection during normal driving

  • Performs automatic shift corresponding to vehicle speed and accelerator pedal depression amount

Active Adaptive Shift (AAS) mode

  • Unnecessary shift up is suppressed for several seconds by maintaining the gear corresponding to the operation speed at which the accelerator pedal is released

  • The optimum gear on the low vehicle-speed side is selected and shift down is executed corresponding to the operation force at which the brake pedal is depressed

  • During cornering, shift up is suppressed in preparation for acceleration after cornering

  • In regions of high elevation, the optimum gear is selected corresponding to the environment

  • The slope is estimated in the TCM to select the appropriate gear for ascent and descent

High ATF temperature mode

  • Controls engine torque when the ATF temperature is high

Manual shift control

(M position)

  • When M position is selected, manual shifting is prioritized according to the driver’s shift up/shift down operation.

Shift pressure control

Line pressure control

  • Controls line pressure with high accuracy and fine control corresponding to engine load conditions and vehicle driving conditions

Direct electric shift control

  • Performs direct, electronic control of clutch engagement pressure appropriate to engine load conditions and vehicle driving conditions

Learning control

  • Learns engine performance changes and transaxle deterioration over time to optimally correct clutch engagement pressure

Torque converter clutch (TCC) control

  • Based on adoption of full range TCC control, active TCC control directly after acceleration from stop

  • By gradually engaging/disengaging TCC piston, shock during operation is reduced

  • Implements TCC control when accelerator pedal is fully closed for improved fuel economy and emission performance

Engine-transaxle integration control

  • Optimally controls engine output torque when shifting

  • Calculates optimum clutch engagement pressure according to engine output torque

On-board diagnostic system

  • Main part of transaxle control includes self-diagnosis function. In case of malfunction, automatic transmission warning light illuminates to alert driver, and DTC is stored in TCM

  • When transaxle malfunction is determined resulting from on-board diagnostic test, system control is switched to prevent any dangerous situation while driving


Construction


Block diagram


Operation

Correlation between control and input/output parts


TCM Configuration [Fw6 A EL, Fw6 Ax EL]
NOTE: The TCM is built into the control valve body. 1. Verify TCM configuration implementation necessity for replacement parts. Replacement part Conf ...

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 veh ...

Other materials:

Rain Sensor Removal/Installation
1. Disconnect the negative battery cable.. 2. Spread open the rain sensor cover in the direction of the arrows (1) and disengage tabs A to remove it. 3. Disconnect the rain sensor connector in the direction of the arrow (2). 4. Slide rain sensor tabs B in the direction of the arrow ...

How To Use This Manual
Range of Topics This manual contains procedures for performing all required service operations. The procedures are divided into the following five basic operations: Removal/Installation Disassembly/Assembly Replacement Inspection Adj ...

Electronic Control Coupling
Purpose, Function An electromagnetic clutch, which operates smoothly due to the lack influence from the front and rear wheel traction force, has been adopted for the electronic control coupling system. Construction The construction of the coupling enables the torque formed ...

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