User's Manual

Title: Partial model information document no. B30 KBCM-00
Page 3 of 18
Type: A30,B30, AB30
July 10, 2020
Kostal (Shanghai) Management Co., Ltd.
A.2 System’s working principle
1) Normal Start Mode: The user enters the vehicle with the authorized smart key, treads the brake or clutch pedal (The
KBCM ECU begins to detect the smart key at once) and presses the engine-start-stop-button (SSSW). ESCL unlock will
be done when the KBCM successfully detects the authorized smart key in the vehicle. After the ESCL is unlocked, KBCM
changes the power mode from OFF to Crank and then the EMS is wake up. After the initialization of the EMS the engine-
anti-theft authentication between KBCM and EMS should be achieved while the engine starter begins to run. If the
authentication is successful, the engine can be started under the control of EMS.
If the user starts the engine not in the power mode OFF but in the power mode ON, the start process could be simplified,
because the ESCL should be already unlocked, the EMS works in normal way and the engine-anti-theft authentication is
finished.
The user presses the engine-start-stop-button when all of the conditions for engine start are satisfied, which are listed as
below:
a) The brake pedal is treaded, and
b) The gear shift is in P or N.
The engine won’t be started if the conditions are not satisfied when the engine-start-stop-button is pressed. But the power
mode will be changed according to the power mode management.
The response time for engine start that is specially focused is the interval from the moment the engine-start-stop-button is
pressed to the moment the engine starter begins to work. Following is the proper operation process: the user treads the
brake pedal first and then presses the engine-start-stop-button. As to the normal response time of human being, there is at
least 100ms between the two actions above. The KBCM takes less than 100ms to detect the smart key. Therefore the
detection and authentication of the smart key should be finished before the user presses the engine-start-stop-button.
2) Emergency Start Mode：If the battery in the smart key is so weak that the engine cannot be started in normal way, the
KBCM system might start the engine with emergent method.
By emergency start the smart key should be close to the appointed position where IMMO module mounted is, when the
user presses the button. The IMMO coil and the transponder chip in the smart key communicate with each other in low
frequency under the control of the KBCM. After the information of transponder is extracted, the engine anti-theft
authentication between KBCM and EMS will be done. If the authentication is successful, the engine can be started under
the control of EMS. The only difference is the method to detect the smart key. By the normal start the authorized smart key
is detected with interior LF antennas while by the emergency start with the IMMO coil.
The location of the smart key is particular for the emergency start. To assure the regular communication between the IMMO
base and the smart key, the smart key must be placed within the inclination of 30° from the center axis of the coil and within
the distance of 30mm from the center of the coil.
3) Vehicle Anti-Theft: There are four Anti-Theft status: Disarmed, Pre-armed, Armed, Alarm status, Default status is
Disarmed status, when system power mode is OFF mode, if execute valid lock door action(Mechanical key/PKE/RKE/T-
BOX lock five doors or Auto Relock successfully), Anti-theft status shall go to Pre-armed status, after skip to Pre-armed
status, if keeping time of Pre-armed status is more than 15seconds, skip from Pre-armed status to Armed status.
During Armed status, if any one condition of below conditions is fulfilled, skip from Armed status to Alarm status:
(1) Any one door of five doors is opened from closed or CAN message HoodSts_F_Pbox value (shall store to
EEPROM) is from 0x0:Closed to 0x1:Open