Component Description
| BCM | Reference |
|---|---|
| BCM | BCM |
| Ignition relay | IGNITION RELAY |
| Accessory relay | ACCESSORY RELAY |
| Blower relay | BLOWER RELAY |
| Push-button ignition switch | PUSH-BUTTON IGNITION SWITCH |
| Stop lamp switch | STOP LAMP SWITCH |
| Transmission range switch | TRANSMISSION RANGE SWITCH |
| Clutch interlock switch | CLUTCH INTERLOCK SWITCH |
SYSTEM DESCRIPTION
- PDS (POWER DISTRIBUTION SYSTEM) is the system that BCM controls with the operation of the pushbutton ignition switch and performs the power distribution to each power circuit. This system is used instead of the mechanical power supply changing mechanism with the operation of the conventional key cylinder.
- The push-button ignition switch can be operated when Intelligent Key is in the following condition. Refer to Engine Start Function for details. Intelligent Key is in the detection area of the inside key antenna. Intelligent Key backside is contacted to push-button ignition switch.
- The push-button ignition switch operation is input to BCM as a signal. BCM changes the power supply position according to the status and operates the following relays to supply power to each power circuit. Ignition relay (IPDM E/R) Ignition relay (fuse block) ACC relay Blower relay NOTE: The push-button ignition switch operation changes due to the conditions of brake pedal, selector lever and vehicle speed.
- The power supply position can be confirmed with the lighting of ACC/ON indicator in the push-button ignition switch.
The power supply position changing operation can be performed with the following operations.
Note. When an Intelligent Key is within the detection area of inside key antenna and when Intelligent Key backside is contacted to push-button ignition switch, it is equivalent to the operations below. When starting the engine, the BCM monitors under the engine start conditions, CVT models Brake pedal operating condition Selector lever position Vehicle speed M/T models Clutch pedal operating condition Vehicle speed
| Power supply position | Engine start/stop condition | Push-button ignition switch operation frequency | ||
|---|---|---|---|---|
| CVT models | M/T models | |||
| Selector lever position | Brake pedal operation condition | Clutch pedal operation condition | ||
| OFF --> ACC | Not depressed | Not depressed | 1 | |
| OFF --> ACC --> ON | Not depressed | Not depressed | 2 | |
| OFF --> ACC --> ON --> OFF | Not depressed | Not depressed | 3 | |
| OFF --> START ACC --> START ON --> START | P or N position | Depressed | Depressed | 1 |
| Engine is running --> OFF | 1 | |||
VEHICLE SPEED: LESS THAN 4 KM/H (2.5 MPH)
| Power supply position | Engine start/stop condition | Push-button ignition switch operation frequency | ||
|---|---|---|---|---|
| CVT models | M/T models | |||
| Selector lever position | Brake pedal operation condition | Clutch pedal operation condition | ||
| Engine is running --> ACC | Emergency stop operation | |||
| Engine stall return operation while driving | N position | Not depressed | Depressed | 1 |
VEHICLE SPEED: 4 KM/H (2.5 MPH) OR MORE
Emergency stop operation
- Press and hold the push-button ignition switch for 2 seconds or more.
- Press the push-button ignition switch 3 times or more within 1.5 seconds.
Description
Push-button ignition switch changes the power supply position.
BCM maintains the power supply position status.
BCM changes the power supply position with the operation of the push-button ignition switch.
Check that vehicle is under the condition shown in "Conditions of vehicle" before starting diagnosis, and check each symptom.
Note. The engine start function, door lock function, power distribution system, and NATS-IVIS/NVIS in the Intelligent Key system are closely related to each other regarding control. The vehicle security function can operate only when the door lock and power distribution system are operating normally.
- Before performing the diagnosis in the following table, check "Work Flow". Refer to " «WORK FLOW»(ref-621434-S41865692812014061000000) ".
- Check that vehicle is under the condition shown in "Conditions of vehicle" before starting diagnosis, and check each symptom.