Automatic Transaxle/Transmission External Controls - Select Shift: Notes
Overview
The transaxle selector lever linkage consists of:
- a selector lever cable that connects the transaxle manual control lever to the selector lever assembly.
- a BSIA that is integral to the selector lever assembly.
- a SelectShift™ switch that allows the driver to have control over transmission shifting by manually selecting which gear to operate in.
The selector lever assembly:
- locks the transaxle selector lever in the PARK position when the ignition switch is in the LOCK position.
- requires the transaxle selector lever to be in the PARK position to turn the ignition switch to the LOCK position.
System Operation
System Diagram
6F50/6F55
| Item | Part Number | Description |
|---|---|---|
| 1 | - | SelectShift switch (part of 7213) |
| 2 | 7213 | Selector lever knob |
| 3 | 7210 | Selector lever assembly |
| 4 | 7E395 | Selector lever cable |
| 5 | - | Selector lever cable grommet (part of 7E395) |
| 6 | - | Selector lever cable routing retainer (part of 7E395) |
| 7 | - | Adjuster locking tab (part of 7E395) |
Range Selection
This transaxle has 5 range positions: P, R, N, D and M for vehicle equipped with SelectShift™.
Selector Lever - 6F50/6F55
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 Position With Grade Assist
DRIVE is the normal position for most forward driving.
Drive provides:
- automatic shifts - 1st through 6th gears.
- apply and release of the TCC.
- maximum fuel economy during normal operation
Manual M Position (vehicles equipped with SelectShift™)
In manual M position:
- the transaxle provides maximum engine braking.
- gears 1 through 6 are available.
- 1st through 5th gears are available upon deceleration.
- the driver can manually shift the transaxle to gears 1 through 6 using the SelectShift™ switch located on the selector lever knob.
- upshifts will have to be shifted manually using the SelectShift™ switch on the selector lever.
- 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.
- the transmission will make all downshifts.
Gear Availability
Range Selection
| Manual Lever Position | Transmission Gear Operation | Description |
|---|---|---|
| D Grade Assist | 1±2±3±4±5-6 | 1st through 5th gears are available. Transmission shifts to the 5th gear if the TCS button is pressed when the transmission is in 6th gear. Transmission provides engine braking. Grade assist is activated. |
| M | 1±2±3±4±5±6 | 1st through 6th gears are available. Transmission provides engine braking. Grade assist is activated. Upshifts can be shifted manually using the SelectShift™ switch on the selector lever. |
Brake Shift Interlock
Brake Shift Interlock Operation
When the ignition switch is in RUN/START, the solenoid inhibits the selector lever movement (from the PARK position) if the brake pedal is not pressed.
The BSIA inhibits the selector lever movement from the PARK position by mechanically blocking the detent pawl of the selector lever mechanism. When the brake pedal is applied with the ignition key in the RUN/START position and the transmission in PARK, the BSIA is energized by the BCM-B, this allows the selector lever to be moved out of the PARK position.
Brake Shift Interlock
| Inputs to BCM-B | Outputs from BCM-B |
|---|---|
| Fuse(s) 18 (10A) BPP switch Ignition switch position (RUN/START) |
BSIA |
Proper Operation Requirements
Three requirements for the selector lever to be moved from the PARK position are:
- Ignition switch in the RUN/START position
- TR sensor in the PARK position
- BPP switch closed (brakes applied - brake lamps on)
SelectShift™
When the selector lever is moved to the M position, the driver can shift the transaxle manually using the SelectShift™ 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™ switch is not serviceable. If a new switch is required, install a new selector lever knob.