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. (IG KEY "ON" after connecting only "the Control Module(s) to be checked" 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 ?