AIR CONDITIONING CUT CONTROL : System Diagram
AIR CONDITIONING CUT CONTROL : System Description
INPUT/OUTPUT SIGNAL CHART
Sensor | Input signal to ECM | ECM function | Actuator |
Crankshaft position sensor (POS) Camshaft position sensor (PHASE) | Engine speed*1 Piston position | A/C compressor request signal | IPDM E/R ↓ Air conditioner relay ↓ Compressor |
Engine coolant temperature sensor | Engine coolant temperature | ||
Accelerator pedal position sensor | Accelerator pedal position | ||
Battery | Battery voltage*1 | ||
Refrigerant pressure sensor | Refrigerant pressure | ||
EPS control unit | EPS operation signal*2 | ||
Combination meter | Vehicle speed signal*2 | ||
BCM | A/C ON signal*2 Blower fan signal*2 |
*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.
Can communication
CAN COMMUNICATION : System Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an onvehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, 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.
ELECTRIC IGNITION SYSTEM : System Diagram ELECTRIC IGNITION SYSTEM : System Description INPUT/OUTPUT SIGNAL CHART Sensor Input signal to ECM ECM function Actuator Cran ...
Cooling fan control : system diagram Cooling fan control : system description INPUT/OUTPUT SIGNAL CHART Sensor Input signal to ECM ECM function Actuator Crankshaft po ...
Windows
Power windows (if so equipped)
WARNING
Make sure that all passengers have
their hands, etc. inside the vehicle while
it is in motion and before closing the
windows. Use the window lock switch to
prevent unexpected use of the power
windows
To help avoid risk of injury or death
thr ...
Accelerator pedal released position
learning
Description
Accelerator Pedal Released Position Learning is a function of ECM to learn
the fully released position of the
accelerator pedal by monitoring the accelerator pedal position sensor output
signal. It must be performed each
time harness connector of accelerator pedal position senso ...