Power Tilt Without Power Telescopic

This system operates the tilt function automatically using the motor drive mechanism controlled by the ECU, and can adjust the steering position up or down steplessly, can set the steering position for easy driving and automatically move the steering wheel to a convenient position when the driver gets in or out of the vehicle. Current is always applied through power CB to TERMINAL +B of tilt ECU, and through dome fuse to TERMINAL ECUB of tilt ECU.

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

1. MANUAL TILT OPERATION
When the Ignition key is inserted into Ignition key cylinder (unlock warning SW ON), a signal is input into TERMINAL UWSW of tilt ECU. Pushing the manual SW toward the "Tilt Up" side causes the current to flow from TERMINAL VC of tilt ECU through the manual SW to TERMINAL MSW of tilt ECU (ECU detects the manual SW mode according to the volume of current).

As a result, tilt 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 ECU --> TERMINAL GND --> GROUND, so that tilt up operation occurs while the manual SW is being pushed on the "Tilt up" side.

For "Tilt Down" operation, when the manual SW is pushed to the down side, the current flows from tilt ECU to TERMINAL TIM- of tilt ECU --> TERMINAL B-12 of Comb. SW --> TERMINAL 1 of tilt control Motor --> TERMINAL 2 --> B-4 of Comb. SW --> TERMINAL TIM+ of tilt ECU, causing the motor to rotate in the reverse direction to tilt up operation, so that tilt down operation occurs while the manual SW is pushed.

2. AUTO AWAY OPERATION
When the Ignition SW is turned OFF, current stops flowing from ECU-IG fuse to TERMINAL IG of tilt 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 ECU.

If the Ignition key is then pulled out of the Ignition key cylinder (unlock warning SW off), a signal is input from TERMINAL UWSW of tilt ECU. Also, the tilt position sensor (Comb. SW) inputs the steering tilt position before the Ignition SW (for unlock warning) is turned OFF as a signal into the TERMINAL TIS of tilt ECU.

As a result, tilt ECU operates and the current to TERMINAL +B of tilt ECU flows from TERMINAL TIM+ of tilt 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 ECU --> TERMINAL GND --> GROUND, causing the motor to turn in the tilt up direction. This performance of tilt up operation in auto mode is the auto away operation.

3. AUTO RETURN OPERATION
When the steering is in the "Auto Away" position and the Ignition key is inserted into the Ignition key cylinder (unlock warning SW ON), a signal is input to TERMINAL UWSW of tilt ECU.

As a result, tilt ECU operates and the current to TERMINAL +B of tilt ECU flows from TERMINAL TIM- of tilt 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 ECU --> TERMINAL GND --> GROUND, causing the tilt control motor to rotate until the signal input into --> TERMINAL TIS of tilt ECU from the tilt position sensor (a signal identifying the current position of the steering) matches the steering position memorized by the ECU before auto away operation is performed. In this way the steering column returns automatically to its original position.

The auto return stops operating when the Ignition SW is turned from OFF to ON, or the shift lever is shifted into a position other than "P" or "N".