Q. MONOSTABLE SHIFTER ASSEMBLY FOR AMT AND DCT TRANSMMISION Introduction of Mono-Stable Shifter: In a mono stable shifter, the gear knob comes • back to the original position, even after user has slotted it in the desired gear. Mono stable shifter uses Shift by Wire • mechanism (SbW). Depending upon gear requested by Monostable • shifter, TCU gives the command to SbW Gear Actuator. Actuator actuates Transmission position • (P/R/N/D) and then TCU understand the engaged gear by the actuator . TCU here acts a master. Upon the gear engagement by SbW gear • Actuator, TCU gives the feedback to Monostable shifter, shifter illuminates the LED for desired gear position. AT TCU communicates with Monostable shifter • & SbW gear Actuator over Private CAN bus. Features of Mono Stable Shifter: Park Mode Separate Switch • Plunger/Knob/Unlock Button • Paddle Shifter hardwired interface with • Instrument cluster LED Display on Shifter (P/R/N/D) • Interface of gear shifter with TCU • FUNCTIONALITY OF MONOSTABLE I. SHIFTER Mono Stable shifter operates in four gear position : 1. Park (P) 2. Reverse (R) 3. Neutral (N) 4. Drive (D) Operating Strategies of Mono-stable Shifter : Vehicle will be allowed to cranked only when • gear shifter is in Park or Neutral. Shift to P from R/N/D with brake & plunger • press is a must Shift from P to R/N/D with brake & plunger • press is a must Shift from R to N Brake & plunger press is not • required Shift from R to D with brake & plunger press is • a must Shift from N to D with brake & plunger press is • a must Shift from N to R with brake & plunger press is • a must Shift from D to N with Plunger press is a must • Shift from D to R with brake & plunger press is • a must PARK When vehicle is Ignition ON by default vehicle will engage Park Mode and MSS will illuminate P letter in red colour as shown in the image. Vehicle will be allowed to cranked only when gear shifter is in Park or Neutral. Gear Shifting: (Refer the shift mapping image ) Brake & Plunger press is must Low Voltage Electrical System (LV) 74
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