Honda Odyssey 2004. Manual — part 218
31
S0X4AA1E10410900000CAAT01
Power Flow
14-266
Automatic Transmission
System Description (cont’d)
MAINSHAFT
MAINSHAFT
REVERSE GEAR
MAINSHAFT
4TH GEAR
4TH CLUTCH
MAINSHAFT
3RD GEAR
TORQUE CONVERTER
COUNTERSHAFT
3RD GEAR
COUNTERSHAFT 1ST GEAR
SECONDARY SHAFT
1ST GEAR
1ST CLUTCH
2ND CLUTCH
SECONDARY SHAFT
2ND GEAR
SECONDARY SHAFT
IDLER GEAR
SECONDARY SHAFT
COUNTERSHAFT 4TH GEAR
PARK GEAR
REVERSE SELECTOR
HUB
COUNTERSHAFT
COUNTERSHAFT
2ND GEAR
COUNTERSHAFT
REVERSE GEAR
1ST-HOLD
CLUTCH
5TH CLUTCH
MAINSHAFT
5TH GEAR
3RD CLUTCH
COUNTERSHAFT
5TH GEAR
REVERSE
SELECTOR
Gear operation
Gears on the mainshaft:
• 4th gear is engaged/disengaged with the mainshaft by the 4th clutch.
• 5th gear is engaged/disengaged with the mainshaft by the 5th clutch.
• Reverse gear is engaged/disengaged with the mainshaft by the 5th clutch.
• 3rd gear is splined with the mainshaft and rotates with the mainshaft.
Gears on the countershaft:
• Final gear is integral with the countershaft.
• 1st gear, 4th gear, 2nd gear and park gear are splined with the countershaft, and rotate with the countershaft.
• 5th gear and reverse gear rotate freely from the countershaft. The reverse selector engages 5th gear and reverse
gear with the reverse selector hub. The reverse selector hub is splined to the countershaft so 5th gear and reverse
gear engage with the countershaft.
• Countershaft 3rd gear is engaged/disengaged with the countershaft by the 3rd clutch.
Gears on the secondary shaft:
• 1st gear is engaged/disengaged with the secondary shaft by the 1st clutch. 1st gear is engaged with the secondary
shaft by the one-way clutch and the 1st-hold clutch when decelerating using for engine braking.
• 2nd gear is engaged/disengaged with the secondary shaft by the 2nd clutch.
• The idler gear is splined with the secondary shaft, and rotates with the secondary shaft.
03/07/29 09:37:06 61S0X050_140_0269
01
P Position
N Position
14-267
MAINSHAFT
COUNTERSHAFT
SECONDARY SHAFT
TORQUE CONVERTER
MAINSHAFT
3RD GEAR
3RD CLUTCH
COUNTERSHAFT
3RD GEAR
SECONDARY SHAFT
IDLER GEAR
PARK GEAR
REVERSE SELECTOR
Hydraulic pressure is not applied to the clutches. Power is not transmitted to the countershaft. The countershaft is
locked by the park pawl interlocking the park gear.
Engine power transmitted from the torque converter drives the mainshaft 3rd gear, the countershaft 3rd gear, and the
secondary shaft idler gear, but hydraulic pressure is not applied to the clutches. Power is not transmitted to the
countershaft. The countershaft 5th gear is engaged to the reverse selector hub by the shift fork reverse selector when
the shift lever is shifted to the N position from any of the forward range positions (D, D3, 2, and 1 positions). The
countershaft reverse gear is engaged when shifted from the R position.
(cont’d)
03/07/29 09:37:07 61S0X050_140_0270
02
Power Flow (cont’d)
1 Position
14-268
Automatic Transmission
System Description (cont’d)
MAINSHAFT
COUNTERSHAFT
SECONDARY SHAFT
TORQUE CONVERTER
FINAL DRIVE GEAR
MAINSHAFT
3RD GEAR
COUNTERSHAFT
3RD GEAR
SECONDARY SHAFT
IDLER GEAR
FINAL DRIVEN GEAR
1ST-HOLD
CLUTCH
1ST CLUTCH
SECONDARY SHAFT
1ST GEAR
COUNTERSHAFT
1ST GEAR
ONE-WAY
CLUTCH
In 1 position, hydraulic pressure is applied to the 1st clutch and the 1st-hold clutch.
The power flow when accelerating is as follows:
• Hydraulic pressure is applied to the 1st clutch, then the 1st clutch engages the secondary shaft 1st gear with the
secondary shaft by the one-way clutch.
• Hydraulic pressure is also applied to the 1st-hold clutch, and the 1st-hold clutch engages the secondary shaft 1st
gear with the secondary shaft.
• The mainshaft 3rd gear drives the secondary shaft via the countershaft 3rd gear and the 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.
03/07/29 09:37:07 61S0X050_140_0271
03
1 Position
14-269
MAINSHAFT
COUNTERSHAFT
SECONDARY SHAFT
TORQUE CONVERTER
FINAL DRIVE GEAR
MAINSHAFT
3RD GEAR
COUNTERSHAFT
3RD GEAR
SECONDARY SHAFT
IDLER GEAR
FINAL DRIVEN GEAR
1ST CLUTCH
SECONDARY SHAFT
1ST GEAR
COUNTERSHAFT
1ST GEAR
ONE-WAY
CLUTCH
The power flow when decelerating is as follows:
• Hydraulic pressure is applied to the 1st clutch and the 1st-hold clutch. Rolling resistance from the road surface goes
through the front wheels to the final drive gear, then to the secondary shaft idler gear.
• The one-way clutch disengages because the application of torque is reversed.
• The counterforce conveyed to the secondary shaft idler gear turns the mainshaft 3rd gear via the countershaft 3rd
gear. As a result, engine braking can be obtained with 1st gear.
(cont’d)
03/07/29 09:37:08 61S0X050_140_0272
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