Mazda Mazda6 Workshop Manual Supplement page 643

4WD CONTROL MODURE
Function
• The 4WD control modure (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 throttle angle, four-wheel speed, engine speed, selector lever position, and other related input
signals, matched with the vehicle driving and road surface conditions.
Functions
Function name
• Based on each input signal, the electronic control current sent to the electronic control coupling
4WD system control
function
• If the self-diagnostic system detects a malfunction, the 4WD warning light illuminates to alert
Diagnostic system
• The detected malfunction is stored as a DTC in the 4WD CM.
Construction
• The 4WD CM is installed to the left of the brake pedal (clutch pedal position).
Block diagram
.
1 Front
2 PCM
3 TCM
4 DSC HU/CM
5 4WD control modure (4WD CM)
6 4WD solenoid
7 Transaxle
8 Transfer
9 Propeller shaft
10 Front drive shaft
ELECTRONIC 4WD CONTROL SYSTEM
(4WD solenoid) is optimally controlled.
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.
5
6
11
8
9
10
Contents
3
4
12
14
11 Pilot clutch/pilot cam
12 Ball/main cam
13 Main clutch
14 Electronic control coupling
15 Rear differential
16 Rear drive shaft
17 Torque transmission path
18 Electric signal path
19 Solenoid activation
A6E632227100205
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13
16
17
18
19
A6E63222008
M-13
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