Telescoping Wheel Motor: Description and Operation

This system operates with both the tilt function and telescopic function driven automatically by the Motor and controlled by the ECU. The steering can be adjusted steplessly forward and back, and up and down, to provide the most suitable steering position for easy driving, with automatic movement of the steering to a position which facilitates getting in and out of the vehicle.

The driver can have the most appropriate driving position memorized by operating the power seat, Remote Control Mirror and Seat Belt Anchorage (driver's) together with the tilt and Power Telescopic steering.

Current is always applied through the power CB to TERMINAL +B of tilt and Power Telescopic ECU and through the dome fuse to TERMINAL ECUB of tilt and Power Telescopic ECU.

With the Ignition SW turned ON, the current flows from ECU-IG fuse to TERMINAL IG and from Gauge fuse to TERMINAL 9 of A/T Indicator SW.

1. MANUAL TILT OPERATION
When the Ignition key is inserted into the Ignition key cylinder (unlock warning SW ON), a signal is input to TERMINAL UWSW of tilt and Power Telescopic ECU. If the manual SW is pushed to the "Tilt Up" side, current flows from TERMINAL VC of tilt and Power Telescopic ECU to TERMINAL MSW of tilt and Power Telescopic ECU passing through the manual SW. (the ECU detects the manual SW position by the volume of current.)

As a result, tilt and Power Telescopic ECU operates and the current to TERMINAL +B of ECU flows from TERMINAL TIM+ --> TERMINAL B-4 of Comb. SW --> TERMINAL 2 of tilt control Motor --> TERMINAL 1 --> TERMINAL B-12 of Comb. SW --> TERMINAL TIM- of tilt and Power Telescopic ECU --> TERMINAL GND --> GROUND, and the tilt up function operates as long as the manual SW is pushed to the "Tilt Up" side.

For "Tilt Down" operation, when the manual SW is pushed to the down side, the current flowing from ECU to Motor flows to TERMINAL TIM- of tilt and Power Telescopic ECU --> TERMINAL B-12 of Comb. SW --> TERMINAL 1 of tilt control Motor --> TERMINAL 2 --> B-4 of Comb. SW --> TERMINAL TIM+ of tilt and Power Telescopic ECU, so the Motor rotates in the reverse direction to tilt up operation, and tilt down operation occurs only while the manual SW is being pushed.

2. MANUAL TELESCOPIC OPERATION
When the Ignition key is inserted into the Ignition key cylinder (unlock warning SW ON), a signal is input to TERMINAL UWSW of tilt and telescopic ECU. When the manual SW is pushed toward "telescopic short" side, current flows from TERMINAL VC of tilt and Power Telescopic ECU to TERMINAL MSW of tilt and Power Telescopic ECU through the manual SW.

As a result, the tilt and Power Telescopic ECU operates and the current to TERMINAL +B of tilt and Power Telescopic ECU flows from TERMINAL TEM+ of tilt and Power Telescopic ECU --> TERMINAL D-1 of Comb. SW --> TERMINAL 2 of telescopic control Motor --> TERMINAL 1 --> TERMINAL D-4 of Comb. SW --> TERMINAL TEM- of tilt and Power Telescopic ECU -->TERMINAL GND --> GROUND, and "telescopic short" operation occurs as long as the manual SW is pushed to "telescopic short" side.

For "telescopic long" operation, when the manual SW is pushed to the telescopic long side, current flowing from tilt and Power Telescopic ECU to the Motor flows through TERMINAL TEM- of tilt and Power Telescopic ECU --> TERMINAL D-4 of Comb. SW --> TERMINAL 1 of telescopic control Motor --> TERMINAL 2 --> TERMINAL D-1 of Comb. SW --> TERMINAL TEM+ of tilt and Power Telescopic ECU --> TERMINAL GND --> GROUND.

As a result, the Motor rotates in reverse to the telescopic short mode and telescopic long operation occurs as long as the manual SW is pushed to the "telescopic long" side.

3. AUTO AWAY OPERATION
When the Ignition SW is turned from ON to OFF, the current stops flowing from ECU-IG to TERMINAL IG of tilt and Power Telescopic ECU and is input as a signal that the Ignition SW is OFF. When the auto SW is turned ON, an "auto SW ON" signal is input to TERMINAL ASW of tilt and Power Telescopic ECU.

If the Ignition key is removed from the Ignition key cylinder (unlock warning SW OFF) at this time, a signal is input from TERMINAL UWSW of tilt and Power Telescopic ECU. Also, the tilt position sensor (Comb. SW) inputs into TERMINAL TIS of the tilt and telescopic ECU a signal of the steering tilt position just before the Ignition SW (for unlock warning) is turned from ON to OFF.

As a result, the tilt and Power Telescopic ECU operates and the current to TERMINAL +B of tilt and Power Telescopic flows from TERMINAL TIM+ of tilt and Power Telescopic ECU --> TERMINAL B-4 of Comb. SW --> TERMINAL 2 of tilt control Motor --> TERMINAL 1 --> TERMINAL B-12 of Comb. SW --> TERMINAL TIM- of tilt and Power Telescopic ECU --> TERMINAL GND --> GROUND, causing the Motor to rotate so that "tilt up" operation occurs automatically.

At the same time, the current from TERMINAL +B of tilt and Power Telescopic ECU to TERMINAL TEM+ flows from TERMINAL D-1 of Comb. SW --> TERMINAL 2 of telescopic control Motor TERMINAL 1 --> D-4 of Comb. SW --> TERMINAL TEM- of tilt and Power Telescopic ECU --> TERMINAL GND --> GROUND, causing the Motor to rotate so that telescopic short operation occurs on auto and with tilt up operation occurring simultaneously on auto, away operation occurs.

4. AUTO RETURN OPERATION
When the steering is in auto away condition and the Ignition key is inserted into the Ignition key cylinder (unlock warning SW ON), a signal is input to TERMINAL UWSW of tilt and Power Telescopic ECU.

As the result, the tilt and Power Telescopic ECU operates and the current to TERMINAL +B of tilt and Power Telescopic ECU flows from TERMINAL TEM- of tilt and Power Telescopic ECU --> TERMINAL D-4 of Comb. SW --> TERMINAL 1 of telescopic control Motor --> TERMINAL 2 --> TERMINAL D-1 of Comb. SW --> TERMINAL TEM+ of tilt and Power Telescopic ECU --> TERMINAL GND --> GROUND, and at the same time, current flows from TERMINAL TEM- of tilt and Power Telescopic ECU --> TERMINAL B-12 of Comb. SW --> TERMINAL 1 of tilt control Motor --> TERMINAL 2 --> TERMINAL B-4 of Comb. SW --> TERMINAL TIM+ of tilt and Power Telescopic ECU --> TERMINAL GND --> GROUND, causing both the tilt control Motor and telescopic control Motor to rotate. The Motors continue to rotate until the signals input from the tilt position sensor to TERMINAL TIS of tilt and Power Telescopic ECU and from the telescopic position sensor --> TERMINAL TES of tilt and Power Telescopic ECU (signals informing the ECU of the current position of the steering) match the position memorized by the ECU prior to auto away operation.

In this way, the steering position is automatically returned to the original position.

When the Ignition SW is turned from OFF to ON or the shift lever is shifted to a position other than P or N, auto operation is stopped.