CONFIGURATION (BCM) : Description
Vehicle specification needs to be written with CONSULT-III because it is not written after replacing BCM.
Configuration has three functions as follows
| Function | Description |
|---|---|
| READ CONFIGURATION | Reads the vehicle configuration of current BCM. Saves the read vehicle configuration. |
| WRITE CONFIGURATION - Manual selection | Writes the vehicle configuration with manual selection. |
| WRITE CONFIGURATION - Config file | Writes the vehicle configuration with saved data. |
FUNCTION DESCRIPTION
Note. Manual setting item: Items which need selection by vehicle specifications Automatic setting item: Items which are written in automatically (Setting can not be changed)
| CAUTION | When replacing BCM, you must perform "WRITE CONFIGURATION" with CONSULT-III. Complete the procedure of "WRITE CONFIGURATION" in order. If you set incorrect "WRITE CONFIGURATION", incidents might occur. Configuration is different for each vehicle model. Confirm configuration of each vehicle model. Never perform "WRITE CONFIGURATION" except for new BCM. |
WIPER INTERMITTENT DIAL POSITION SETTING (FRONT WIPER INTERMITTENT OPERATION)
BCM judges the wiper intermittent dial 1 - 7 by the status of INT VOLUME 1, 2 and 3 switches.
| Wiper intermittent dial position | Intermittent operation delay interval | INT VOLUME switch ON/OFF status | ||
|---|---|---|---|---|
| INT VOLUME 1 switch | INT VOLUME 2 switch | INT VOLUME 3 switch | ||
| 1 | Short ↑ ↓ Long | ON | ON | ON |
| 2 | ON | ON | OFF | |
| 3 | ON | OFF | OFF | |
| 4 | OFF | OFF | OFF | |
| 5 | OFF | OFF | ON | |
| 6 | OFF | ON | ON | |
| 7 | OFF | ON | OFF | |
REFERENCE CHART
Identifying Combination Switch Reading System Components Location. Scheme 23
Signal Buffer System Diagram. Scheme 24
SLEEP OPERATION
- BCM receives the sleep-ready signal (ready) from IPDM E/R, combination meter and Intelligent Key unit with CAN communication.
- BCM transmits the sleep wake up signal (sleep) to each unit when all of the CAN sleep conditions are fulfilled.
- Each unit stops the transmission of CAN communication with the sleep wake up signal. BCM is in CAN communication sleep mode.
- BCM is in the low power consumption mode and perform the low power consumption control when all of the BCM sleep conditions are fulfilled with CAN sleep condition.
Sleep condition
| CAN sleep condition | BCM sleep condition |
|---|---|
| Receiving the sleep-ready signal (ready) from all units Key switch status: No change Ignition switch: OFF Door switch status: No change Door lock status: No change Hazard warning lamp: Not operation Exterior lamp: OFF Warning lamp: Not operation (Except security indicator) Warning chime: Not operation Remote keyless entry receiver: Not receiving Intelligent key unit communication: No operation request (CAN) CONSULT-III communication status: Not communication Vehicle security system alarm: Not operation Stop lamp switch: OFF | The controls only BCM are completed. (Interior room lamp battery saver: Time out etc.) |
SLEEP CONDITION
WAKE-UP OPERATION
- BCM transmits sleep wake up signal (wake up) to each unit when any condition listed below is established, and then goes into normal mode from low power consumption mode.
- Each unit starts transmissions with CAN communication by receiving sleep wake up signals. Combination meter and Intelligent Key unit transmit wake up signals to BCM with CAN communication to convey the start of CAN communication.
| Wake-up condition |
|---|
| BCM wake-up condition |
| Receiving the sleep-ready signal (Not-ready) from any unit Key switch: OFF --> ON, ON --> OFF Ignition switch: OFF --> ACC or ON Any door switch: OFF --> ON, ON --> OFF Central door lock switch: NEUTRAL --> LOCK, NEUTRAL --> UNLOCK Key cylinder switch: NEUTRAL --> LOCK, NEUTRAL --> UNLOCK Hazard switch: OFF --> ON Lighting switch: OFF --> 1ST or PASS Remote keyless entry receiver: Receiving Intelligent key unit communication: Receiving operation request (CAN) CONSULT-III communication status: Receiving Stop lamp switch: ON (Depress brake pedal) Back door opener switch OFF --> ON |
WAKE-UP CONDITION
Identifying Power Consumption Control System Components Location. Scheme 25
DESCRIPTION
During driving, the TPMS receives the signal transmitted from the transmitter installed in each wheel, when the tire pressure becomes low. The control unit (BCM) of this system has pressure judgment and trouble diagnosis functions.
When the TPMS detects low inflation pressure or another unusual symptom, the low tire pressure warning lamps in the combination meter comes on.
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern vehicle is equipped with many electronic control unit, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to " CAN COMMUNICATION SIGNAL CHART ".
HIGH FLASHER OPERATION
BCM detects the turn signal lamp circuit status by the current value.
BCM increases the turn signal lamp blinking speed if the bulb or harness open is detected with the turn signal lamp operating.
Note. The blinking speed is normal while activating the hazard warning lamp.