Check CAN Communication Waveform Generation
- Ignition "OFF"
- Disconnect CAN communication modules.
- Connect 2 channel scope to DLC CAN HIGH terminal and CAN LOW terminal.
- 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.)
- Does correct waveform generate from each module?
YES
- Replace the module which generates poor communication waveform, and go to "VERIFICATION OF VEHICLE REPAIR ".
NO
- Fault is intermittent caused by poor contact in the sensor s and/or AFLS ECU s connector or was repaired and AFLS ECU memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.