DESCRIPTION
IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input signals from various sensors and the request signals received from control units via CAN communication.
| CAUTION | IPDM E/R integrated relays cannot be removed. |
| Control relay | Input/output | Transmit unit | Control part | Reference page |
|---|---|---|---|---|
| Front wiper relay Front wiper high relay | Front wiper request signal | BCM (CAN) | Front wiper motor | SYSTEM |
| Front wiper stop position signal | Front wiper motor | |||
| Starter relay | Starter relay signal | BCM (CAN) | Starter motor | SYSTEM |
| Transmission range switch signal | Transmission range switch | |||
| Cooling fan relay-1 | Cooling fan speed request signal | ECM (CAN) | Cooling fan | COOLING FAN CONTROL: SYSTEM DESCRIPTION |
| A/C relay | A/C compressor request signal | ECM (CAN) | A/C compressor (Magnet clutch) | SYSTEM (automatic air conditioning) SYSTEM (manual air conditioning) |
| Ignition relay-1 | Ignition switch ON signal | BCM (CAN) | Each control unit, sensor, actuator and relay (Ignition power supply) | FUEL INJECTION TIMING |
| Vehicle speed signal (Meter) | Combination meter (CAN) | |||
| Push-button ignition switch signal (with Intelligent Key system) | Push-button ignition switch (with Intelligent Key system) | |||
| Ignition switch signal (without Intelligent Key system) | Ignition switch (without Intelligent Key system) |
SMART FIELD-EFFECT TRANSISTOR (FET): System Description
A smart Field-Effect Transistor (FET) is a transistor used to monitor and control current flow on module outputs. The IPDM E/R uses a smart FET protection strategy to prevent module damage in the event of excessive current flow. The smart FET protection strategy monitors its outputs for excessive current, and when a fault occurs, shuts down the output and records a DTC.
Scheme 71
Outline
- IPDM E/R incorporates a power consumption control function that reduces the power consumption according to the vehicle status.
- IPDM E/R changes its status (control mode) with the sleep wake up signal received from BCM via CAN communication.
Normal mode (wake-up)
- CAN communication is normally performed with other control units.
- Individual unit control by IPDM E/R is normally performed.
Low power consumption mode (sleep)
- Low power consumption control is active.
- CAN transmission is stopped.
Sleep Mode Activation
- IPDM E/R judges that the sleep-ready conditions are fulfilled when the ignition switch is OFF and none of the conditions below are present. Then it transmits a sleep-ready signal (ready) to BCM via CAN communication. Outputting signals to actuators Switches or relays operating Output requests are being received from control units via CAN communication.
- IPDM E/R stops CAN communication and enters the low power consumption mode when it receives a sleep wake up signal (sleep) from BCM and the sleep-ready conditions are fulfilled.
Wake-up Operation
- IPDM E/R changes from the low power consumption mode to the normal mode when it receives a sleep wake-up signal (wake up) from BCM or any of the following conditions is fulfilled. In addition, it transmits a sleep-ready signal (not-ready) to BCM via CAN communication to report the CAN communication start. Ignition switch ON An output request is received from a control unit via CAN communication.
ECU IDENTIFICATION
The IPDM E/R part number is displayed.
Refer to " SYSTEM DESCRIPTION ".