4WD CONTROL MODULE FUNCTION

id031800166000

• The 4WD CM calculates the optimal amount of torque distribution for the rear wheels and outputs a corresponding electric current to the electronic control coupling (4WD solenoid). This calculation is based on the accelerator pedal position, four-wheel speed, engine speed, selector lever position, and other related input signals, matched with the vehicle driving and road surface conditions.

Function table

Function name

Contents

4WD system control function
• Based on each input signal, the electronic control current sent to the electronic control coupling (4WD solenoid) is optimally controlled.
Diagnostic system
• If the self-diagnostic system detects a malfunction, the 4WD warning light illuminates to alert the driver, and at the same time the system suspends control or performs other measures to prevent a loss of driving stability and protect the system.
• The detected malfunction is stored as a DTC in the 4WD CM.