Electrical error on expansion CAN bus
• Check connector for expansion CAN-bus on BCI (pin C11 and C12). • Check wiring for expansion CAN-bus: - Measure the resistance (with the battery disconnected) between CAN-high (pin C11) and CAN-low (pin C12). It should be close to 60 ohm (one 120 ohm termination resistor in each end of the CAN-bus). - Measure the resistance (with the battery disconnected) between CAN-high on BCI (pin C11) and CAN-high on any other unit on the expansion CAN-bus. It should be close to zero ohm. - Measure the resistance (with the battery disconnected) between CAN-low on BCI (pin C12) and CAN-low on any other unit on the expansion CAN-bus. It should be close to zero ohm. • Check wiring and connector for the ignition signal (pin A11) on the BCI.
What you'll see
No driver-visible symptom recorded.
System reaction
• Functions dependent on the expansion unit might be degraded. Which functions that are affected depends on the bodybuilders construction of the electrical system.
Diagnostic depth
Communication error. Expansion CAN-bus buffer overflow. The expansion CAN-bus has an open circuit.
• Defect connectors on BCI for expansion CAN-bus (pin C11 or C12). • Defect wiring for expansion CAN-bus, open circuit on CAN-high (pin C11) or CAN-low (pin C12). • Ignition signal (pin A11) on BCI is short circuit to supply.