(F21-450)
Copyright by Hyundai Motor Company. All rights reserved.
Index Subject Page
Specification 3
Technical feature 4
Construction 5
Operating chart 6
Control function 7
Input & Output 8
Shift position sensor 9
Input speed sensor & Output speed sensor 11
Solenoid valve 12
TCM adaptive learning 14
ATF level check 15
Hyundai Technical Training Step 2 Aisin Automatic Transaxle F21 450 2009
Full download: http://manualplace.com/download/hyundai-technical-training-step-2-aisin-automatic-transaxle-f21-450-2009/
Specification
Items
Specifications
A/T model F21-450 (AISIN MODEL:TF81-SC)
Type FF 6-speed Max. Torque 45kgm Torque converter 3 elements 2 phases 1 stage
Elements Clutch 3 (Multiple disc type) Brake 2 (One band and one multiple disc type) OWC 1 (Roller type)
Solenoid valve On/Off 2 Solenoids (S1, S2) Linear 6 Solenoids (SLC1,SLC2,SLC3,SLB1,SLT,SLU)
ATF Spec. JWS-3309 (Grade: T-4) Quantity 7L
ATF service interval Maintenance free
ATF level adjustment Over flow checking type
Gear ratio 1st ~ 6th 4.148, 2.370, 1.556, 1.155, 0.859, 0.686 Reverse 3.394
The automatic transaxle for EN (Veracruz) is „F21-450‟ model which has been developed by AISINAW 6 speed FWD transaxle. Adopting 6-speed A/T in Hyundai vehicle for the first time, acceleration performance and fuel consumption have been enhanced. Also the smooth shift feeling and quick shifting response could be acquired applying more accurate hydraulic control technology. In this manual, the main characteristics, hydraulic control system and electronic control system including all sensors and actuators will be explained. The F21-450 is a compact, light weight (94kg), next-generation electronically controlled FF 6speed automatic transaxle that employs a Ravigneaux-type planetary gear. It employs a highprecision clutch hydraulic control system for smooth, highly responsive gear shift feel.