Acura TSX / Honda Accord CL. Manual — part 929

Fig. 26: Transmission Cutaway View

POWER FLOW

P Position

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.

N Position

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

Engine power transmitted from the torque converter drives the mainshaft idler gear, the idler shaft idler gear,
and the secondary idler gear, but hydraulic pressure is not applied to the clutches. Power is not transmitted to
the countershaft. In this position, the position of the reverse selector differs according to whether the shift lever
shifted from D or R position:

z

When shifted from D position, the reverse selector engages with the countershaft 4th gear and the reverse
selector hub, and the 4th gear engages with the countershaft.

z

When shifted from R position, the reverse selector engages with the countershaft reverse gear and the
reverse selector hub, and the reverse gear engages with the countershaft.

Fig. 27: N Position Power Flow

1st Gear

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 idler shaft idler gear and the secondary shaft idler

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

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.

Fig. 28: 1st Gear Power Flow

2nd Gear

Hydraulic pressure is applied to the 2nd clutch, then the 2nd clutch engages the secondary shaft 2nd gear with
the secondary shaft.

The mainshaft idler gear drives the secondary shaft via the idler shaft idler gear and the secondary shaft idler
gear.

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

The secondary shaft 2nd gear drives the countershaft 2nd gear and the countershaft.

Power is transmitted to the final drive gear, which in turn drives the final driven gear.

Fig. 29: 2nd Gear Power Flow

3rd Gear

Hydraulic pressure is applied to the 3rd clutch, then the 3rd clutch engages the secondary shaft 3rd gear with the
secondary shaft.

The mainshaft idler gear drives the secondary shaft via the idler shaft idler gear and secondary shaft idler gear.

The secondary shaft 3rd gear drives the countershaft 3rd gear and the countershaft.

Power is transmitted to the final drive gear, which in turn drives the final driven gear.

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed