COO timeout in CAN communication
• Check other ECUs for DTCs indicating time-out from the COO unit. • Check unit COO: - Fuse - Wiring to Supply Voltage (30), System Ground (31), and Ignition (15) - CAN connections • Check EST::ECU (E112) connection to Orange CAN (wiring and connectors). The battery should be disconnected. - Disconnect harness connector on ECU side, and measure the resistance between pins E112::B29 and E112::B32. It should be approximately 60 ohm (two 120 ohm termination resistors in CAN-bus network).
What you'll see
No driver-visible symptom recorded.
System reaction
Yellow Steer tag axle fault wa EST in fixed centred mode
Diagnostic depth
Communication error. Communication with the Coordinator (COO) interrupted.
• Open circuit or short circuit on the Orange CAN bus. • COO unit has no power supply