Land Rover Bosch GS8.87 Transmission Management (D2, RR P38)

The Automatic Transmission Control Module (TCM) operates the solenoid valves in the gearbox to provide automatic control of gearshifts and Torque Converter Clutch (TCC) lock-up. Software in the TCM monitors hard wired inputs and exchanges information with the Engine Control Module (ECM)on a Controller Area Network (CAN) bus to determine gearshift and TCC lock-up requirements. Resultant control signals are then output to the gearbox solenoid valves.

Vehicle Coverage:

  • Discovery Series II 1999 to 2004 MY
  • Range Rover 38A 1999 to 2002 MY


  • Introduction
  • Diagnostic Trouble Codes and Freeze Frames
  • Inputs and Outputs
  • Onboard Monitoring
  • Transmission Control Module
  • Description
  • System Interfaces
  • Description
  • End of Line Programming
  • Description
  • Shift Solenoids
  • Description
  • Torque Converter Clutch Solenoid
  • Description
  • Pressure Regulator Solenoid
  • Description
  • Transmission Range Switch (Park, Reverse, Neutral, Drive) – Range Rover Only
  • Description
  • Gear Ratio Functional Check
  • Description

Language: English
Format: PDF
Pages: 13

Land Rover Bosch GS8.87 Transmission Management (D2, RR P38) PDF free online