Diagnostic Test

VERIFY ACTIVE DTC
NOTE:
Make sure the IOD fuse is installed and battery Voltage is between 10 and 16 Volts before proceeding.
1. Turn the ignition on.
2. Using a scan tool, read DTCs.
  Is the U0001-CAN C BUS DTC active?
  
  Yes
  - Refer to Diagnosis and Testing . and perform the U0001-CAN C BUS CIRCUIT diagnostic procedure.
  No
  - Refer to Diagnosis and Testing . and perform the Stored Lost Communication DTCs diagnostic procedure.