Component Inspection

Engine Control
U0001 High Speed CAN Communication Bus off - Inspection/Repair:_:Component Inspection

Component Inspection

Check CAN communication waveform generation
1. IG "OFF" and disconnect CAN communication modules.
2. Connect 2 channel scope to DLC CAN HIGH terminal and CAN LOW termina.
3. IG KEY "ON" after connecting only ECM to CAN BUS.

Specification :At Ignition "ON", the waveform is same as the one of "Signal Waveform & Data".

4. Is the measured resistance within specification ?