LEMON Manuals: Even more car manuals for everyone
Home >> Alfa Romeo >> 2017 >> 4C Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> (Instrument Cluster - Electrical Diagnostics) >> DTC Troubleshooting >> U0019-88-B Can - Bus Off >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. With the scan tool, read DTCs.

      Is the DTC active?

      Yes 

      • Go To  2

      No 

      • Test complete.
  2. CHECK THE INSTRUMENT PANEL CLUSTER (IPC) CONNECTOR 
    1. Check the correct engagement of the instrument panel connector.

      Is the instrument panel connector correctly engaged?

      Yes 

      • Go To  3

      No 

      • Properly engage the instrument panel connector.
  3. CHECK THE CONTINUITY OF THE CAN LINE 
    1. Check the continuity of the CAN line.

      Does the CAN line have continuity?

      Yes 

      • Go To  4

      No 

      • Restore the CAN line continuity.
  4. CHECK THE LOW CAN FOR SHORT TO + BATTERY 
    1. Check the Low Can circuit for a short to + battery.

      Is the Low Can circuit shorted to + battery?

      Yes 

      • Restore insulation to + battery.

      No 

      • Go To  5
  5. CHECK THE HIGH CAN FOR SHORT TO GROUND 
    1. Check the High Can circuit for a short to ground.

      Is the High Can circuit shorted to ground?

      Yes 

      • Restore insulation to ground.

      No 

      • Test complete.