Park
In the P position
- there is no powerflow through the transmission.
- the parking pawl locks the final drive.
- the engine may be started.
- the ignition key may be removed.
Reverse
In the R position
- the vehicle may be operated in a rearward direction, at a reduced gear ratio.
- reversing lamps are illuminated.
- engine braking will occur.
Neutral
In the N position
- there is no powerflow through the transmission.
- the output shaft is disengaged from the drive wheels.
- the engine may be started.
Drive
The range selector in D position provides
- automatic shifts - 1st through 6th gears.
- maximum fuel economy during normal operation.
Manual S Position
In manual S position
- the transmission provides maximum engine braking.
- gears 1 through 6 are available.
- the driver can manually shift the transmission to gears 1 through 6 using the SelectShift™ switch located on the selector lever knob.
- grade assist is activated.
- the transmission will select gears that will provide the engine braking desired, based on the vehicle inputs, this will increase engine RPM during engine braking.
Brake Shift Interlock System
The BSIA (brake shift interlock actuator) inhibits the selector lever movement from the P position by mechanically blocking the detent pawl of the selector lever mechanism. When the brake pedal is pressed ( BPP switch closed) with the ignition key in the RUN/START position and the transmission in P , the BSIA is energized by the BCM , this allows the selector lever to be moved out of the P position.
Brake Shift Interlock Actuator
The brake shift interlock actuator system consists of
- a BSIA that is integral to the selector lever assembly.
- an ignition switch.
- a BPP switch.
- a BCM .
Selector Lever Cable
The selector lever cable consists of
- a cable that connect the transmission manual control lever to the selector lever assembly.
- a cable grommet that is fastened to the floor pan.
- an adjuster locking tab at the transmission manual control lever.
Selector Lever
- a selector lever knob.
- a BSIA that is integral to the selector lever assembly.
Possible Sources
- Circuitry shorted to ground
- BCM
- Circuitry open or shorted to power
- BCM
- Circuitry open/shorted
- SelectShift™ switch
- PCM