Component Inspection

Adaptive Front Lighting System
B1603 CAN Communication Bus Off - Component Inspection

Component Inspection

Check CAN communication waveform generation
1. Ignition "OFF
2. Disconnect CAN communication modules. (AFLS, TCM, ECM, ECS, ESC, Steering angle sensor, EHPS, SCC, Airbag ECU, EPB, Cluster, LDWS, Camera module, PSB LH, PSB RH system).
3. Connect 2 channel scope to DLC CAN HIGH terminal and CAN LOW terminal.
4. IG KEY "ON" after connecting only AFLS ECU to CAN BUS.
(IG KEY "ON" after connecting only "the Control Module(s) to be checked" to CAN BUS.)

Specification




Fig.1) CAN LOW and CAN HIGH Communication Waveform.
5. Does correct waveform generate from each module?