CAN Communication Line Inspection

Specification  : About 0V

• Check Short to Ground in CAN Communication Line 

1. IG KEY OFF.
2. Disconnect ECM/PCM, EPS (MDPS), and BSD ECU connector.
3. Measure resistance between CAN high terminal (# 3) of diagnostic connector and chassis ground.
4. Measure resistance between CAN low terminal (# 11) of diagnostic connector and chassis ground.

   Specification  : ∞Ω

5. Is the measured value within specification?

   YES 

   • Check ECM/PCM, EPS, BSD ECU and ESP/ESC connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

   NO 

   • Check short to battery in communication line. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
   • Check short to ground in communication line. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.