Caution / Notice / Hint
NOTE:
- Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key, switches or opening or closing the doors. After that, disconnect the cable from the negative (-) auxiliary battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
- After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work (Refer to PRECAUTION [11/2015 - 06/2017]
- Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - ] ).
- After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.
- DTC check procedure (w/o cruise control system): Turn the ignition switch ON (IG), wait at least 60 seconds, and then drive the vehicle at a speed of 20 km/h (12 mph) or more.
- DTC check procedure (w/ cruise control system): Turn the ignition switch ON (IG), turn the cruise control system on using the cruise control main switch (ON/OFF switch), wait at least 60 seconds, and then drive the vehicle at a speed of 20 km/h (12 mph) or more.
- After the repair, perform CAN Bus Check and check that all the ECUs and sensors connected to the CAN communication system are displayed (Refer to DIAGNOSIS SYSTEM [11/2015 - ] ).
HINT:
- Operating the ignition switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
- Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.