Mazda CX-5 Service & Repair Manual: Shift Pressure Control (Learning Control) [Fw6 A EL, Fw6 Ax EL]
Outline
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The TCM optimizes the hydraulic pressure for clutch engagement and disengagement through learning correction of the clutch engagement pressure.
NOTE:
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The clutch engagement pressure learning value stored in the TCM is not cleared even if the negative battery terminal is disconnected. Therefore, if the control valve body is replaced, the learning value stored in the TCM and the control valve body specification are incompatible and engine rev-up may occur or shift shock may increase. Due to this, if the control valve body is replaced, it is necessary to perform the initial learning.
Construction
Operation
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The TCM learns engine performance changes resulting from past shifting and deterioration over time of the transaxle and performs learning correction for optimum clutch engagement pressure during initial shifting.
Shift Pressure Control (Direct Electric Shift Control) [Fw6 A EL, Fw6 Ax EL]
Outline
The TCM drives shift solenoids No.1, 2, 3, 4, the pressure control solenoid,
and the on/off solenoid based on inputs signals from each switch and sensor,
and performs direct elect ...
Shift Pressure Control (Line Pressure Control) [Fw6 A EL, Fw6 Ax EL]
Outline
The TCM drives the pressure control solenoid and adjusts the pressure based
on the accelerator pedal depression amount, vehicle speed, ATF temperature,
and gear shift signal. As a ...
Other materials:
Service Cautions
Injury/damage Prevention Precautions
Depending on the vehicle, the cooling fan may operate suddenly even when
the ignition is switched to off. Therefore, keep hands and tools away from the
cooling fan even if the cooling fan is not operating to prevent injury to personnel
or damage t ...
Check Valve Inspection
Except U.S.A. And CANADA
1. Remove the check valve..
2. Verify that there is no airflow when positive pressure is applied to port
A.
If there is airflow, replace the check valve..
3. Verify that there is no airflow when negative pressure is applied to port
A.
If ther ...
Pre Tensioner Seat Belt [Standard Deployment Control System]
Purpose
The pre-tensioner seat belt retracts and tightens the seat belt webbing to
protect the front passengers during a collision.
Function
The pre-tensioner seat belts operate (deploy) based on the operation signal
from the SAS control module to instantly retract and tigh ...
