Electrical error on CMS subCAN2.
• Check connectors for the CMS subCAN2-bus on CMS (pin (A35) and (A38)). • Check wiring for the CMS subCAN2-bus: o Measure the resistance (with the battery disconnected) between CAN-high (pin A35) and CAN-low (pin A38). It should be close to 60 ohm when all units are connected (one 120 ohm termination resistor in each end of the CAN-bus). o Measure the resistance (with the battery disconnected) between CAN-high on CMS (pin A35) and CAN-high on the other units on the CMS subCAN2-bus. It should be close to zero ohm. o Measure the resistance (with the battery disconnected) between CAN-low on CMS (pin A38) and CAN-low on the other units on the CMS subCAN2-bus. It should be close to zero ohm. • Check wiring and connector for the ignition signal (pin B38) on the CMS.
What you'll see
No driver-visible symptom recorded.
System reaction
Functions that depend on the CMS subCAN2-bus may be degraded.Examples listed below: Battery Data Monitor (BDM1) 24V Equaliser (EQU2)
Diagnostic depth
Communication error, electrical error, or buffer-overflow on the CMS subCAN2-bus.
Defect connectors on CMS for the CMS subCAN2-bus (pin A35 or A38). • Defect wiring for the CMS subCAN2-bus, open circuit on CAN-high (pin A35) or CAN-low (pin A38). • Ignition signal (pin B38) on CMS is short circuit to supply.