System Description

SYSTEM DIAGRAM

^*1: With automatic back door system models

^*2: Without automatic back door system models

BACK DOOR OPEN FUNCTION (WITHOUT BACK DOOR SYSTEM MODELS)

When the BCM detects that back door opener switch is pressed, then keyless operation key unit transmits the request signal to the keyless operation key. And then, check that the keyless operation key is near the back door.
If the keyless operation key is within the keyless operation rear outer antenna detection area, it receives the request signal and transmits the key ID signal to the keyless operation key unit via remote keyless entry receiver.
Keyless operation key unit receives the key ID signal and compares it with the registered key ID to the vehicle.
If the verification result is OK, BCM unlock and opens back door.

BACK DOOR OPEN FUNCTION (WITH BACK DOOR SYSTEM MODELS)

When the BCM detects that back door opener switch is pressed, then keyless operation key unit transmits the request signal to the keyless operation key. And then, check that the keyless operation key is near the back door.
If the keyless operation key is within the keyless operation outer antenna detection area, it receives the request signal and transmits the key ID signal to the keyless operation key unit via remote keyless entry receiver.
Keyless operation key unit receives the key ID signal and compares it with the registered key ID.
If the verification result is OK, keyless operation key unit transmits the back door open request signal to automatic back door control unit via CAN communication.
Automatic back door control unit transmits back door open request signal to back door lock assembly and back door is open.
When the back door is open, automatic back door system performs waiting operation for next back door close operation.
The operation of then back door open is the same as the automatic back door system, refer to System Description.

OPERATION CONDITION

If the following conditions are satisfied, the back door can be opened.

Back door opener switch operation	Operation condition
Open	All doors: LOCK Keyless operation key is within keyless operation rear outer antenna detection area^*

^*: Even with a registered keyless operation key remaining inside the vehicle, back door can be opened from outside of the vehicle with a spare keyless operation key as long as key IDs are different.

note	For details back door open operation other conditions. Refer to System Description.

KEYLESS OPERATION REAR OUTER ANTENNA DETECTION AREA

The keyless operation rear outer antenna detection area of back door open function is in the range of approximately 0.8 m (31.50 in) surrounding back door opener switch

. However, this operating range depends on the ambient conditions.

LIST OF OPERATION RELATED PARTS

Parts marked with × are the parts related to operation.

Function	Keyless operation key	Keyless operation key unit	Back door opener actuator	Back door switch	Keyless operation rear inner antenna	Keyless operation rear outer antenna	CAN communication system	BCM	Automatic back door control unit	Back door opener switch
Back open function (back door opener switch)	×	×	×	×	×	×	×	×	×	×