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4WD SYSTEM DLN-13 < SYSTEM DESCRIPTION > [TRANSFER: ATX14B] C E F G H I J K L M A B DLN N O P SYSTEM DESCRIPTION 4WD SYSTEM System Diagram INFOID:0000000007357348 COMPONENT DESCRIPTION WDIA0164E Components Function Transfer control unit Controls transfer control device, control valves and shifts between 2WD/4WD and 4H/4LO. Transfer control device Integrates actuator motor and actuator position switch. 2-4WD shift solenoid valve Controls oil pressure and allows shifting between 2WD and 4WD. Clutch pressure solenoid valve Controls oil pressure and distributes torque between front and rear tires. Line pressure switch Detects line pressure. Clutch pressure switch Detects clutch pressure. Transfer fluid temperature sensor Detects transfer fluid temperature. Actuator motor Moves shift rods when signaled by transfer control unit. Actuator position switch Detects actuator motor position. Wait detection switch Detects whether or not 4WD lock gear is locked. 4LO switch Detects if transfer case is in 4LO. ATP switch Detects if transfer case is in neutral. 4WD shift switch Allows driver to select from 2WD/4WD, 4H/4LO and AUTO. 4WD warning lamp • Illuminates if malfunction is detected in 4WD system. ATP warning lamp Indicates that A/T parking mechanism does not operate when A/T selector lever is in P position 4WD shift indicator lamp Displays driving range selected by 4WD shift switch. 4LO indicator lamp Displays 4LO range. August 2012 2012 Pathfinder |