Automatic Transmission: Overview Honda Odyssey III

The Odyssey SRS includes a driver's airbag in the steering wheel hub, a passenger's airbag in the dashboard above the glove box, seat belt tensioners in the front seat belt retractors, side curtain airbags in the sides of the roof, and side airbags in the front seat-backs. Information necessary to safely service the SRS is included in this information.

1. To avoid rendering the SRS inoperative, which could lead to personal injury or death in the event of a severe frontal or side collision, all SRS service work must be performed by an authorized Honda dealer.
2. Improper service procedures, including incorrect removal and installation of the SRS, could lead to personal injury caused by unintentional deployment of the airbags and/or side airbags.
3. Do not bump or impact the SRS unit, front impact sensors, or side impact sensors when the ignition switch is ON (II), or for at least 3 minutes after the ignition switch is turned OFF; otherwise, the system may fail in a collision, or the airbags may deploy.
4. SRS electrical connectors are identified by yellow color coding. Related components are located in the steering column, front console, dashboard, dashboard lower panel, in the dashboard above the glove box, in the front seats, in the roof side, and around the floor. Do not use electrical test equipment on these circuits.

Scheme 3

General Operation

The automatic transmission is a combination of a 3-element torque converter and triple-shaft electronically controlled unit which provides 5 speeds forward and 1 reverse. The entire unit is positioned in line with the engine.

Gear Operation

Gears on the mainshaft

1. 4th gear is engaged/disengaged with the mainshaft by the 4th clutch.
2. 5th gear is engaged/disengaged with the mainshaft by the 5th clutch.
3. Reverse gear is engaged/disengaged with the mainshaft by the 5th clutch.
4. 3rd gear is splined with the mainshaft and rotates with the mainshaft.

Gears on the countershaft

1. Final gear is integral with the countershaft.
2. 1st gear, 4th gear, 2nd gear, and park gear are splined with the countershaft, and rotate with the countershaft.
3. 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.
4. 3rd gear is engaged/disengaged with the countershaft by the 3rd clutch.

Gears on the secondary shaft

1. 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 for engine braking.
2. 2nd gear is engaged/disengaged with the secondary shaft by the 2nd clutch.
3. Idler gear is splined with the secondary shaft, and rotates with the secondary shaft.

Scheme 4

Shift Solenoid Valve ON-OFF Operation

The PCM turns on and off the shift solenoid valves A, B, and C to control shifting of the transmission gears. The combination of driving signals to shift solenoid valves A, B, and C are shown in GEAR POSITION CHART .

GEAR POSITION CHART