Car automatic transmission Mazda 3 (BK)

General information about automatic transmission
The operation of the electronic automatic transmission in the final drive unit is divided into three systems: the electronic control mechanism, the hydraulic control...

The design and operation of the transmission mechanism
Pic. 3.73. Transmission mechanism design: 1 - forward clutch; 2 - one-way clutch; 3 - reverse gear and low gear brake; 4 - planetary forward gear; 5 - planetary reverse...

Electronic Control System (PCM)
The automatic transmission PCM is integrated with the engine control unit. The vehicle's PCM outputs a control signal to the engine and transmission based on signals...

Automatic transmission shift mechanism
Pic. 3.76. Automatic transmission shift mechanism The switching unit consists of a lock cable, a lock cam and a lock mechanism. The switching system directly monitors...

The principle of operation of the automatic transmission shift mechanism
The selector lever can only be moved out of position P under the following conditions: the brake pedal is pressed; selector lever button pressed. Pic. 3.77. The...

Switch lock test
Turn the ignition switch to the ON position. Check that the selector lever is in position P. Depress the brake pedal and check that the selector lever can move out of...

Ignition key lock check
Make sure that the ignition key cannot be removed from the lock in any position of the selector lever, except for P. If a malfunction is found, check the lock cable.

Checking the lock cable
Remove the lock cable. Pic. 3.78. Checking the lock cable: 1 - slider pin; 2 - lock cable; 3 – the switch of signals of braking When shown in Figure 3.78, the position...

Checking the selector lever
Turn the ignition key to the ON position (engine off). Make sure that when you move the lever, with the brake pedal depressed, a click is heard in each position. Make...

Gear selector cable adjustment
Remove the center console. Move the selector lever to position P. Pic. 3.80. Unlocking the gear selection cable (from the selector lever) Unlock the gear selector cable...

Transmission Range Switch Adjustment
Disconnect the wire from the negative battery terminal. Pic. 3.82. Disconnecting the transmission control cable Loosen the nut and disconnect the transmission control...

Removal and installation of the selector lever
Pic. 3.88. Automatic transmission shift mechanism: 1 – facing of a steering column (with key lock mechanism); 2 - clamp (with key lock mechanism); 3 - clamp (with key...

Installing the lock cable
Make sure the selector lever is in the P position and the ignition key is in the LOCK position. Press the locking mechanism and rest it against the brake pedal stop...

FN4A-EL automatic transmission map
Table 3.4. FN4A-EL automatic transmission map *1 Automatic mode switches «power» And «normal» according to the speed at which the throttle control pedal is depressed. *2...

Electronic controls and their operation
Table 3.5. Electronic controls and their operation X - available. 0 - reserve