Short in CAN Bus Lines

Short in CAN Bus Lines

DESCRIPTION




There may a short circuit in the CAN main wire and/or CAN branch wire when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 54 ohms.

Wiring Diagram:

Step 1-2:

Step 3-4:

Step 4(Continued)-7:

Step 8-9:

Step 10:

Step 11:

Step 12:

Step 13:

Step 14-15:

Step 16-17:

Step 17(Continued)-18:

Step 18(Continued)-19:

Step 19(Continued):

INSPECTION PROCEDURE

NOTE:
- Turn the ignition switch OFF before measuring the resistances of the CAN main wire and the CAN branch wire.
- After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.
- Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors. If doors need to be opened in order to check connectors, open the doors and leave them open.

HINT: Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.