Location of the CAN CAR network ECU
 |
 |
The CAN CAR network connects all safety nodes.
Data transfer rate 125 Kbps (Low Speed).
The transmission of information remains constant throughout the entire CAN CAR network.
Messages are transmitted over the network periodically, and each computer processes its own information.
The control of the network connection and the establishment of the "+ CAN" power supply is carried out by the switching unit (BSI 1).
The CAN CAR network computers have their own regulation and are connected to the power supply, depending on the case, either "+ CAN", or "+ BAT" or "+ APC", which comes from the BSM.
Note: Open circuit in one of the two wires or short circuit between the wires "CAN CAR High" or "CAN CAR Low" carries out communication over the network, providing information about the error.
CAN CAR voltage level (oscilloscope readings)
- "R": CAN CAR High.
- "Q": CAN CAR Low.
Voltage: 2V.
Time: 1 m/s.
Test conditions:
- the engine is not working;
- ignition is on.
Results: variable pulse packets indicate information circulating on the high (High) line of the CAN CAR network.
Source can be seen at (www.PeugeotBook.ru)
 |
 |
Note: The CAN CAR Low signal complements the CAN CAR High signal.
CAN CAR Low Network Voltage Levels:
- low level - 1V < U < 1.4 V;
- high level - 4.8 V < U < 5.6 V.
CAN CAR High Network Voltage Levels:
- low level - 0 V < U < 0.2 V;
- high level - 3.8 V < U < 4.2 V.