Description
TRANSMISSIONComponent Operation
Electronic Transaxle Component Operation:
Powerflow Diagram
Electronic Transaxle Powerflow Diagram:
1. Crankshaft
2. Drive plate
3. Torque converter
4. Turbine shaft
5. Oil pump shaft
6. Oil pump
7. Forward clutch
8. Coasting clutch
9. 3-4 clutch
10. Reverse clutch
11. 2-4 brake band
12. Low and reverse brake
13. One-way clutch 1 (Sprag type)
14. One-way clutch 2 (Sprag or roller type)
15. Large sun gear
16. Small sun gear
17. Long pinion gear
18. Short pinion gear
19. Internal gear
20. Parking gear
21. Output gear
22. Idler gear
23. Ring gear
The FA4A-EL (F4A-EL) transmission is a front wheel drive transaxle design with electronically regulated shift activation and lockup torque converter. Operation is controlled by the EC-AT (Electronically Controlled Automatic Transmission) control unit (integral with engine control unit for B6 SOHC model, except 1993 California). Operation of engine electronic controls and transmission electronic controls are coordinated to provide greater efficiency.
SELF-DIAGNOSIS FUNCTION
System Description
The self-diagnosis system integrated in the control unit diagnoses malfunctions of the throttle sensor, the speed sensors, and the control unit itself. Malfunctions (both hard faults and intermittents) are stored in control unit memory and can be retrieved as service codes.
General Notes
On 1993 California B6 SOHC models, the dash hold indicator does not flash to indicate service code numbers.
If there is more than one malfunction, code numbers are displayed in numberical order, lowest number first.
The dash hold indicator light flashes indicating the same pattern as the buzzer on the Mazda EC-AT tester (except 1993 B6 SOHC Calif.). When the check connector is not grounded (as during normal driving), the indicator flashes at a constant frequency until the malfunction is corrected. At the same time, a service code is stored in the control unit.
After repairs, turn ignition off, disconnect the negative battery cable for at least 20 seconds, and depress the brake pedal to erase service codes from control unit memory.