Test 6: Test With the Aid of the Measuring System

Test with the aid of the measuring system

Test sequence
- Measurement of level voltage of engine CAN buses CAN bus High and CAN bus Low with the universal oscilloscope
- Separating one user from the connector strip X63/4 (CAN databus adapter connector, 2-pin)
- Observe level voltage.
- Plug in connector again at connector strip X63/4 (CAN databus adapter connector, 2-pin).
- Repeat this procedure for all CAN users.

Specified value
- As soon as the faulty branch was disconnected, the current image of the level voltage changes.

Possible cause of fault in the faulty branch
- X63/4 (CAN databus adapter connector, 2-pin)
- Test connectors and wiring for CAN of engine compartment CAN control modules.
- Control unit

Communication with ECU required (Measuring system)