Can Communication, Fault-Tracing: Fault-Tracing: Verification

HINT: Once a fault has been repaired, conduct a verification to check that the fault has been remedied. 

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS CORPORATION

Fig 2: Engine Start Verification

Courtesy of VOLVO CARS CORPORATION

• Reinstall the connectors, components etc.
• Ignition on
  NOTE:

  For certain faults in the CAN-net where control modules have stopped communicating, it may help to disconnect/reconnect the battery  to "restart" the control module/CAN-net.

  • Erase diagnostic trouble codes (DTCs) in all control modules
  • Ignition off.
  • Ignition on.
  • Start the vehicle. Allow the vehicle to run for 10 minutes.

  Read out the diagnostic trouble codes in the vehicle via the DIAGNOSTICS tab.

Does the diagnostic trouble code (DTC) for faulty communication return? 

• YES 

  Refer to INFORMATION 

• NO 

  Refer to VERIFICATION