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8.2. Transfer case
The transfer case is established behind the power unit. The engine torque through transmission and a transfer case is transferred on lobbies and back driving shaft/semi-axes by means of driveshafts.
On a design and an action principle the transfer case used on the Infiniti QX4 models belongs to polnorezhimny (All-mode) with electronic and hydraulic management — see below-mentioned illustrations:
As the think-tank the module of management of automatic transmission (TCM) acts. Refusals of 4WD system are fixed in memory of the module of management and can be считаны by means of the CONSULT type scanner, or on signals of a control lamp. Problem diagnostics of AT and 4WD system should be made in the conditions of a car-care center workshop.
Originators of the real Management do not recommend to motorists to make in house conditions of attempt of independent performance of regenerative repair of the failed transfer case. Work demands existence of special tools and a certain qualification of the performer. Nevertheless, independent performance of procedures of removal and installation of the transfer case, which description is given further, will allow in an essential measure to cut down the expenses connected both with repair, and with replacement of the failed assembly.
Schematic diagram of functioning of control system AT/4WD
Base principles of functioning of a transfer case
Function chart of a hydraulic contour of management of 4WD system
Function chart of a control system of 4WD