Memory Positioning Module: Description and Operation

Description

Seat and mirror positions set by the driver are memorized in the IMS control unit by the position sensors. So, those positions can be returned to the memorized positions by the IMS control switch and keyless control even when the seat and mirror positions are changed. (This is called replay operation). In addition, LIN communication is performed between power seat control unit and power window. For the sake of safety, replay is prohibited during driving and replay operation can be stopped immediately.

Operation flow chart





Function
1. Manual operation of the seat and mirror by the manual switches.
2. Memory and replay (memory and replay operation) of seat and mirror positions by the IMS control switch: up to 2 driver's.
3. Auto memory in case of lock of the keyless and replay (keyless memory and replay operation) in case of unlock: up to 2 drivers.
4. Down operation of the outside mirror in case of backup.
5. Functional controls.
(1) Up/down and left/right controls of the driver's outside mirror
(2) Up /down and left/right controls of the passenger's outside mirror
(3) Driver's power seat
A. Forward and backward control of the reclining seat.
B. Up and down control of the seat height.
C. Up and down control of the tilt.
D. Forward and backward control of the slide.

Operation

Manual operation
1. Mirror switch on the power window main drives mirror motor.
2. Seat manual switch sets seat position and operates 4 way simultaneously.
3. Manual seat control is made by the motor regardless of CPU.

Memory operation
1. If the position switch is pressed within the 5 seconds after pressing the memory switch when the ignition is ON, then, current positions of the seat and mirror are registered. (Memory permits status lasts for 5 seconds after the memory switch is on, and the memory permit status is cleared thereafter. In other words, current position is registered only if the position switch is pressed in memory permit status.)




2. Memory permits status will be cleared if any of the following conditions is met.
A. After 5 seconds from the memory switch ON.
B. When the manual switch of seat is ON.
C. When the ignition is OFF.
D. When the STOP switch is ON.
E. When the memory registration is completed.
3. If two position switches are pressed ON simultaneously in memory or replay, it operates by the switch recognized first.
4. Memory setting cannot be performed if the vehicle speed is more than the specified one or shift lever is not in the P position when the parking brake is released.

Memory replay operation
1. Seat and mirror are returned to the registered positions as each position switch is pressed while the ignition is ON.
2. Memory replay operation will be performed only if the memory is registered.
3. If the position switch is pressed while the memory replay is in operation, the final switch is effective.
4. It sounds the chime once while the memory replay operation (Position switch is ON).
5. Replay inhibition condition
If any of the following conditions is met, memory replay is prohibited and operation will stop if it is in replay operation.
A. Ignition OFF
B. When parking brake is released (switch OFF)
C. When the shift lever is at the position other than P
D. When the parking brake is released.
E. When the vehicle speed is more than 3 km/h
F. When the STOP switch is turned ON during the replay operation
G. When the manual switch is in operation





Keyless memory and replay operation
1. Keyless memory operation
(1) Ignition ON positions are registered corresponding to the keyless codes.
(2) Keyless codes are determined by the keyless door lock operation.
2. Keyless replay operation
(1) Upon the door unlock operation by the keyless when the ignition is OFF, it automatically sets the registered positions corresponding to the keyless codes.
(2) Keyless replay prohibiting condition
If any of the following conditions is met, memory replay is prohibited and operation will stop if it is in replay operation
A. When parking brake is released (switch OFF)
B. When the manual switch is in operation