Multiplex Communication: Overview Hyundai Azera I

DESCRIPTION

Driver side power window switch, a component of CAN, performs CAN communication with BCM, seat ECU, tilt ECU, passenger side power window switch. Driver controls driver side power window switch button located inside of the driver side door to operate power window, mirror, door lock and unlock.

1. It performs 4 types of operation of manual up/down and automatic up/down operation for 4 power windows.
2. It performs manual operation of the mirror position by manual switch, (up/down and left/right)
3. It performs registration and replay of mirror position by the mirror switch up to 2 drivers.
4. It performs central door lock and unlock function
5. It loads trunk-opening signal on the BUS through the CAN communication.

Scheme 1

1. This switch controls power window up/down, automatic up/down from driver & assist side. Driver's power window switch sends input signal through CAN communication by the manual up/down and automatic up/down switch input. At the same time passenger side sends manual up/down and automatic up/down signals to the wires. --> Each safety window ECU receives the signal and performs manual up/down and automatic up/down functions.
2. Power window lock When the driver's power window lock switch is ON, each safety window ECU receives the power window lock command to prohibit the operation by the passenger side doors except the driver's door.
3. Timer function Power window switch can be controlled for 30 seconds after the ignition is turned off. This function stops immediately even within 30 seconds if the front door is opened.

Scheme 2

Scheme 3

1. Door lock/unlock switch of the driver side power window controls lock and unlock of all doors. (However, it cannot be unlocked when BCM receives the boundary mode through CAN communication, and it cannot be locked until the ignition off in case of crash unlock.)
2. When the door is locked by the interior lock knob of the driver' s (or passenger side door), all doors can be locked. (Though, unlocking is not feasible)
3. When locking or unlocking with the door key switch from driver side, all doors can be locked or unlocked. T1: 0.5 ± 0.1 sec. T1: 0.5 ± 0.1 sec. T2: 5.0 ± 0.5 sec.

OUTSIDE MIRROR REPLAY OPERATION BY THE MEMORY SWITCH

1. Mirror is returned to the registered position as each position switch is pressed while the ignition 2 is ON.
2. Memory replay operation will be performed only if the memory is registered. (POS1 or POS2)
3. If the position switch (POS1 or POS2) is pressed while the memory replay is in operation, the final switch is effective.
4. Replay inhibit condition When inhibit " P" switch is OFF When the ignition 2 is OFF When LH side mirror switch is pressed When the vehicle speed is more than 3 km/h When the memory STOP switch is turned ON

OUTSIDE MIRROR MEMORY AND REPLAY OPERATION BY KEYLESS

1. Memory operation Outside mirror LH position is registered in the driver side power window switch when the ignition is turned off from on. When door is locked by the keyless, outside mirror position is registered corresponding to the keyless code. Data related to the memory operation is received from BCM in CAN communication.
2. Replay operation When door is unlocked by the keyless under ignition off state, it replays the position corresponding to the keyless code. Data related to the replay operation is received from BCM in CAN communication on CAN line.
3. Replay prohibit condition When the inhibit " P" switch is OFF When LH side mirror switch is pressed When mirror switch is pressed after ignition on When the vehicle speed is over 3 km/h When the memory stop switch is ON

Assist power window switch, a component of CAN, performs CAN communication with BCM, seat ECU, tilt ECU, driver power window switch. Passenger controls assist power window switch button located inside of the assist door to operate power window, mirror, door lock and unlock.

1. It performs 4 types of operation of manual up/down and automatic up/down operation for 4 power windows.
2. It performs manual operation of the mirror position by manual switch, (up/down and left/right)
3. It performs registration and replay of mirror position by the mirror switch up to 2 drivers.

OUTSIDE MIRROR MEMORY OPERATION BY THE MEMORY SWITCH

1. It can be memorized assist outside mirror position by CAN communication from driver door module. However, RH side mirror position is not registered during the LH side mirror manual switch operation.
2. Memory is cleared if the battery is removed.

1. Mirror is returned to the registered position as each position switch is pressed while the ignition 2 is ON.
2. Memory replay operation will be performed only if the memory is registered. (POS1 or POS2)
3. If the position switch (POS1 or POS2) is pressed while the memory replay is in operation, the final switch is effective.
4. Replay inhibit condition When inhibit " P" switch is OFF When the ignition 2 is OFF When RH side mirror switch is pressed When the vehicle speed is more than 3 km/h When the memory STOP switch is turned ON

1. Memory operation Outside mirror LH position is registered in the driver side power window switch when the ignition is turned off from on. When door is locked by the keyless, outside mirror position is registered corresponding to the keyless code. Data related to the memory operation is received from BCM in CAN communication.
2. Replay operation When door is unlocked by the keyless under ignition off state, it replays the position corresponding to the keyless code. Data related to the replay operation is received from BCM in CAN communication on CAN line.
3. Replay prohibit condition When the inhibit "P" switch is OFF When RH side mirror switch is pressed When mirror switch is pressed after ignition on When the vehicle speed is over 3 km/h When the memory stop switch is ON