Components Function

WARNING: This page is about a different car, the 2005 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

4WD COMPONENTS FUNCTION

Component	Function
Transfer control unit	Controls transfer control device and switches 4H-4LO under 4WD condition and 2WD-4WD.
Transfer control device	Actuator motor and actuator position switch are integrated so as to switch driving types.
Actuator motor	Controls shift rods by signals from transfer control unit.
Actuator position switch	Detects actuator motor position.
Wait detection switch	Detects that transfer is under 4WD condition.
4LO switch	Detects that transfer is under 4LO condition.
ATP switch	Detects that transfer is under neutral condition.
4WD shift switch	Able to select from 2WD, 4H or 4LO.
4WD warning lamp	Illuminates if malfunction is detected in electrical system of 4WD system. There is 1 blink in 2 seconds if rotation difference of front wheels and rear wheels is large.
ATP warning lamp	Indicates that A/T parking mechanism does not operate when A/T selector lever is in "P" position and transfer is under neutral condition.
4WD shift indicator lamp	Displays driving condition selected by 4WD shift switch.
4LO indicator lamp	Displays 4LO condition.
ABS actuator and electric unit (control unit)	Transmits the following signals via CAN communication to Transfer control unit. Vehicle speed signal Stop lamp switch signal (brake signal)
TCM	Transmits the following signal via CAN communication to Transfer control unit. Output shaft revolution signal A/T position indicator signal (PNP switch signal)
ECM	Transmits engine speed signal via CAN communication to Transfer control unit.