LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2009 >> Tacoma PreRunner, 2D Pickup >> Repair and Diagnosis >> Electrical >> Body Electrical >> OEM System Circuits >> Power Window >> System Outline

System Outline

With the ignition SW turned on, current flows through the IG1 NO. 2 fuse to TERMINAL 5 of the body ECU then out TERMINAL 13 to TERMINAL 1 of the P/W relay then out TERMINAL 2 to GROUND, activating the P/W relay, and the current flowing from TERMINAL 3 of the P/W relay flows out TERMINAL 5 to D FR P/W fuse to TERMINAL (A) 7 (Double cab) or (B) 9 (Access cab) of the power window master SW, from the P FR P/W fuse to TERMINAL 4 of the power window SW (Front passenger's side), from the D RR P/W fuse to TERMINAL 3 of the power window SW (Rear LH), and from the P RR P/W fuse to TERMINAL 3 of the power window SW (Rear RH).

  1. Manual Operation (Driver Window) 

    If the ignition SW is turned on and the power window master SW (Manual SW) is pushed to the UP position, the current flowing to TERMINAL (A) 7 (Double cab) or (B) 9 (Access cab) of the power window master SW flows out TERMINAL (A) 4 (Double cab) or (B) 3 (Access cab) to TERMINAL 2 of the power window regulator motor (Front LH) and out TERMINAL 1 to TERMINAL (A) 9 (Double cab) or (B) 4 (Access cab) of the master SW and out TERMINAL (A) 1 (Double cab) or (B) 1 (Access cab) to GROUND and causes the power window regulator motor to rotate in the up direction. The window continues to ascend only as long as the SW is being pushed.

    In the down operation, the current flowing from TERMINAL (A) 7 (Double cab) or (B) 9 (Access cab) of the power window master SW and out TERMINAL (A) 9 (Double cab) or (B) 4 (Access cab) flows to TERMINAL 1 of the motor LH to TERMINAL 2 to TERMINAL (A) 4 (Double cab) or (B) 3 (Access cab) of the master SW and out TERMINAL (A) 1 (Double cab) or (B) 1 (Access cab) to GROUND, flowing in the opposite direction to the manual up operation, causing the motor to rotate in reverse and lowering the window.

  2. Auto Down Operation (Driver Window) 

    If the ignition SW on and the auto SW on the power window master SW is pushed to the DOWN position, the current flowing to TERMINAL (A) 7 (Double cab) or (B) 9 (Access cab) of the master SW flows out TERMINAL (A) 9 (Double cab) or (B) 4 (Access cab) of the master SW to TERMINAL 1 of the power window regulator motor (Front LH) and out TERMINAL 2 to TERMINAL (A) 4 (Double cab) or (B) 3 (Access cab) of the master SW and out TERMINAL (A) 1 (Double cab) or (B) 1 (Access cab) to GROUND, causing the motor to rotate towards the down side.

    Then the solenoid in the master SW will be activated and it locks the auto SW as if it was being held down, causing the motor to continue to rotate in the down direction until it completes the operation.

    When the window has completely descended, the current flowing between TERMINAL (A) 4 (Double cab) or (B) 3 (Access cab) of the master SW and TERMINAL (A) 1 (Double cab) or (B) 1 (Access cab) increases. As a result, the solenoid stops operating, the auto SW turns off and the current which is flowing from TERMINAL (A) 7 (Double cab) or (B) 9 (Access cab) of the master SW to TERMINAL (A) 9 (Double cab) or (B) 4 (Access cab) is cut off, stopping the motor.

  3. Stopping of Auto Down at Driver's Window 

    When the manual SW (Driver's) is pushed to the up side during an auto down operation, a ground circuit opens in the master SW and current does stops flowing from TERMINAL (A) 4 (Double cab) or (B) 3 (Access cab) of the master SW to TERMINAL(A) 1 (Double cab) or (B) 1 (Access cab), and the motor stops, causing the auto down operation to stop. If the manual SW is held down, the motor rotates in the up direction in a manual up operation.

  4. Manual Operation by Power Window Control SW (Front RH Window) 

    If the power window SW (Front passenger's side) is pushed to the up position, the current flowing to TERMINAL 4 of the power window SW (Front passenger's side) flows out TERMINAL 3 to TERMINAL 2 of the power window regulator motor (Front RH) then out TERMINAL 1 to TERMINAL 1 of the power window SW (Front passenger's side) and out TERMINAL 2 to TERMINAL (A) 15 (Double cab) or (B) 10 (Access cab) of the master SW and out TERMINAL (A) 1 (Double cab) or (B) 1 (Access cab) to GROUND. This causes the power window regulator motor (Front RH) to rotate in the up direction. The up operation continues only as long as the power window control SW RH is pushed to the up position. When the window descends, the current flowing to the motor flows in the opposite direction, from TERMINAL 1 to TERMINAL 2, and the motor rotates in reverse. When the window lock SW is pushed to the lock side, the ground circuit to the front RH window becomes open. As a result, even if an Open or Close operation is attempted for the front RH window, the current from TERMINAL (A) 1 (Double cab) or (B) 1 (Access cab) of the power window master SW is not grounded and the motor does not rotate, so the front RH window can not be operated and window lock occurs.

  5. Manual Operation (Rear LH, RH Window) [Double Cab] 

    If the power window SW (Rear LH, RH) is pulled to the up side, the current flowing from TERMINAL 3 of the power window SW flows out TERMINAL 1 to TERMINAL 2 of the power window regulator motor then out TERMINAL 1 to TERMINAL 5 of the power window SW and out TERMINAL 4 to TERMINAL (A) 13 (LH) or (A) 16 (RH) of the master SW then finally out TERMINAL (A) 1 to GROUND and causes the power window regulator motor (Rear LH, RH) to rotate in the up direction. The up operation continues only as long as the power window control SW is being pulled to the up position. When the window descends, the current flowing to the motor flows in the opposite direction, from TERMINAL 2 to TERMINAL 1, and the motor rotates in reverse. When the window lock SW is pushed to the lock side, the ground circuit to the rear LH, RH window opens.

    As a result, even if an Open or Close operation is attempted for the rear LH or RH window, the current from TERMINAL (A) 1 of the power window master SW is not grounded and the motor does not rotate, so the rear LH and RH windows can not be operated and a window lock occurs.

  6. Key Off Power Window Operation 

    If the ignition SW is turned from on to off, the body ECU continues to operate for about 45 seconds and current flows to TERMINAL 1 of the P/W relay and out TERMINAL 2 to GROUND. For this period, current also flows from TERMINAL 1 to TERMINAL 2. This current flows to TERMINAL (A) 7 (Double cab) or (B) 9 (Access cab) of the power window master SW and to TERMINAL 4 (Front RH) or 3 (Rear) of the power window SW. As a result, for about approx. 43 seconds after the ignition SW has been turned off, it is possible to continue to raise and lower the power windows. Also, if a door is opened (Door courtesy SW on) within this 45 seconds after turning the ignition SW off, a signal will be input to the body ECU. As a result, the body ECU turns off, and the up and down movement of the window stops.

scientia non olet · About LEMON Manuals