Circuit/System Description

WARNING: This page is about a different variant/trim than selected.

When the shift lever is placed in low (L), the driver shift request, also known as the tap shift function is activated. The driver shift request allows the vehicle operator to switch from L2 to L1 pressing the minus (-) button and back to L2 by pressing the plus (+) button. The body control module (BCM) supplies a signal circuit to the automatic transmission manual shift switch. The automatic transmission manual shift switch has switches connected to a resistor array. When the lever is in the L position, a voltage drop occurs across the resistor network. When the plus or minus button is pressed, a corresponding voltage drop occurs across the resistor network. This voltage drop is monitored by the BCM. The BCM will send the request to the hybrid/EV powertrain control module 1 to perform the transition from L2 to L1 or if already in L1 then back to L2. When the shifter is moved the L position, the instrument cluster will display L2, the hybrid/EV powertrain control module 1 will command a higher level of regenerative braking than what is commanded in the D position. When the minus (-) button is pressed, the L1 mode is commanded by the hybrid/EV powertrain control module 1. When the plus (+) button is pressed when in L1 mode the system will transition back to L2.