AR54.10-P-1030-10GZ Locate Defective Consumer Via CAN Bus

AR54.10-P-1030-10GZ Locate Defective Consumer Via CAN Bus

Commercially Available Tools:

1. Measure "low" level and "high" level of engine compartment CAN bus (CAN-C) with respect to ground using multimeter. See also wiring plan information in main document.
2.1 If "low" level and/or "high" level of engine compartment CAN bus (CAN-C) is energized:
Detach connectors of CAN-C stations in sequence at CAN voltage distributor in front passenger footwell and observe quiescent current consumption. If quiescent current consumption drops below 0.05 A, defective consumer has been located. See wiring plan information in main document.
Detach and then reattach connector before moving on to next connector.
2.2 If "low" level and "high" level of engine compartment CAN bus (CAN-C) are de-energized:
Measure "low" level and "high" level of interior CAN bus (CAN-B) with respect to ground using multimeter. See also wiring plan information in main document.

12 V must be measured at one of the two levels; 0 V must be measured at the other level.

3.1 If neither of the two levels of interior CAN bus (CAN-B) is 0 V:
Detach connectors of CAN-B stations in sequence at right CAN voltage distributor and at cockpit CAN voltage distributor and observe quiescent current consumption. If quiescent current consumption drops below 0.05 A, defective consumer has been located. See wiring plan information in main document.
Detach and then reattach connector before moving on to next connector.
3.2 If 12 V is measured at one of the two levels and 0 V is measured at the other level:
Locate defective consumer via power supply: see step 17.1 in main document.