Nissan 200SX S13 silhouetteS13

DESCRIPTION — Push Control — Intake Door Motor and Mode Door Motor (L.H.D. model)

HA-10prose procedure

L.H.D. model variant of mode door motor logic.

Intake Door Motor

The intake door motor is installed on the front portion of the intake unit. Using a rod and link it opens and closes the intake door.
When the REC switch is ON (OFF), the ground line of the intake door motor is switched from terminal ⑪ to ⑨ (⑨ to ⑪). This causes the motor to start because the position switch contacts built into it are set to the current flow position. The contacts turn along with the motor. When they reach the non-current flow position, the motor will stop. The motor always turns in the same direction.

Mode Door Motor — L.H.D. MODEL

The mode door motor is located on the left side of the heater unit. Through the side link it opens and closes the vent, foot and defroster door.
When one mode switch is pushed, the position switch built into it reads the corresponding mode to determine the direction of the motor rotation. As soon as the desired mode is set, the position switch stops the motor.

Mode door motor — terminal-state truth table

Terminal ⑧
Mode door operationStop
Direction of linkage rotationStop
Terminal ⑧
Mode door operationVENT → DEF
Direction of linkage rotationClockwise
Terminal ⑧
Mode door operationDEF → VENT
Direction of linkage rotationCounter-clockwise

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