4WD CONTROL MODULE

id031800171000


Purpose, Function

•  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 angle, four-wheel speed, engine speed, 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.


Construction

•  The 4WD CM is located under the rear seat (LH).

Block Diagram

ac5wzn00002362

Fail-safe

DTC

Fail-safe
P164D:00
4WD operates by the specified data.
P182F:00
4WD protection condition (4WD control paused)
P187B:00
Control disabled.
P1886:00
Control disabled.
P188A:00
4WD protection condition (4WD control paused)
U2100:00
4WD operates by the specified data.