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Home >> Infiniti >> 2002 >> Q45 >> Repair and Diagnosis >> External Pages >> Different car >> Section 212 (Automatic Air Conditioner) >> Air Conditioner Control >> System Construction >> Notes

System Construction: Notes

WARNING: This page is about a different car, the 2004 Infiniti Q45. However, it is still accessible from the selected car via links, so may be relevant.

A small network is constructed between the auto amp., air mix door motor, mode door motor and intake door motor. The auto amp. and motors are connected by data transmission lines and motor power supply lines. The LAN network is built through the ground circuits of each door motor.

Fig 1: Identifying LAN Network Construction
G00741575Courtesy of NISSAN MOTOR CO., U.S.A.

Addresses, motor opening angle signals, motor stop signals and error checking messages are all transmitted through the data transmission lines connecting the auto amp. and each door motor.

The following functions are contained in LCUs built into the air mix door motor, mode door motor and intake door motor.