Not Valid
• Check power supply and ignition signal to the expansion unit bus • Check the identification pins for expansion unit bus • Check CAN connection to expansion unit • Check wiring and connectors for the expansion CAN-bus • Measure the resistance (with the battery disconnected) between pins CAN_H and CAN_L. It should be approximately 60 ohm (one 120 ohm termination resistor in each end of the CAN-bus).
What you'll see
No driver-visible symptom recorded.
System reaction
• Functions dependent on the expansion unit are degraded. Which functions that are affected depends on the bodybuilders construction of the electrical system.
Diagnostic depth
Configuration error. Configuration for the expansion unit bus is faulty.
• Power supply to expansion unit bus has failed • Incorrect identification on expansion unit bus. • Expansion unit bus disconnected from the expansion CAN bus • Faulty control unit for expansion unit bus