System Operation

Automatic Transaxle-Transmission External Controls - Select Shift

System Operation

System Diagram












Range Selection

This transaxle has 5 range positions: P, R, N, D and M for vehicles equipped with SelectShift(TM) .

Selector Lever





Park

In the park position:

- there is no power flow through the transaxle.

- the parking pawl locks the final drive.

- the engine may be started.

- the ignition key may be removed.

Reverse

In the REVERSE position:

- the vehicle may be operated in a rearward direction, at a reduced gear ratio.

- engine braking will occur.

Neutral

In the NEUTRAL position:

- there is no power flow through the transaxle.

- the output shaft is not held and is free to turn.

- the engine may be started.

Drive

DRIVE is the normal position for most forward driving.

Drive provides:

- automatic shifts - 1st through 6th gears.

- maximum fuel economy during normal operation.

Manual M Position

In manual M position:

- the transaxle provides maximum engine braking.

- gears 1 through 6 are available.

- the driver can manually shift the transaxle to gears 1 through 6 using the select switch located on the selector lever knob.

- grade assist is activated.

- the transaxle will select gears that will provide the engine braking desired, based on the vehicle inputs, this will increase engine rpm during engine braking.

Gear Availability





Brake Shift Interlock

BSIA (Brake Shift Interlock Actuator)










Location

The BSIA (Brake Shift Interlock Actuator) is part of the selector lever assembly.

The brake shift interlock system prevents the selector lever from being moved out of PARK unless the requirements to do so are met. The ignition switch must be in the ON position and the brake pedal must be pressed. The brake pedal position is detected by the BPP (Brake Pedal Position) switch. In the event the selector lever will not come out of PARK, the manual release mechanism mechanically bypasses the electric portion of the brake shift interlock system allowing the selector lever to be moved out of PARK. The manual release mechanism is part of the selector lever assembly. If PARK is selected again, the selector lever will be locked again.

Select Shift





When the selector lever is moved to the M position, the driver can shift the transaxle manually using the SelectShift(TM) switch mounted on the selector lever knob. By pressing plus (+) on the toggle switch once will shift the transmission to next highest gear. Pressing the minus (-) on the toggle switch will shift the transmission to next lowest gear.

The SelectShift(TM) switch is not serviceable. If a new SelectShift(TM) switch is required install a new selector lever knob.