Honda 2004 Odyssey Service Manual page 637

Automatic Transmission
System Description (cont'd)
Power Flow (cont'd)
In the D4 or D3 position, the optimum gear is automatically selected from the 1st, 2nd, 3rd, and 4th gears, according to
conditions such as the balance between the throttle opening (engine loading) and vehicle speed.
D4 or D3 Position in 1st gear and the 1 Position
• Hydraulic pressure is applied to the 1st clutch, then the 1st clutch engages the secondary shaft 1st gear with the
secondary shaft.
• The mainshaft idler gear drives the secondary shaft via the countershaft idler gear and secondary shaft idler gear.
• The secondary shaft 1st gear drives the countershaft 1st gear and the countershaft.
• Power is transmitted to the final drive gear, which in turn drives the final driven gear.
MAINSHAFT
COUNTERSHAFT
COUNTERSHAFT
IDLER GEAR
SECONDARY
SHAFT
SECONDARY SHAFT
IDLER GEAR
14-24
MAINSHAFT IDLER GEAR
1ST CLUTCH
COUNTERSHAFT
1ST GEAR
SECONDARY SHAFT
1ST GEAR
TORQUE CONVERTER
FINAL DRIVE GEAR
FINAL DRIVEN GEAR