Result:
B -- REPLACE POWER MANAGEMENT CONTROL ECU See: Power and Ground Distribution/Power Distribution
Module/Service and Repair/Removal
A -- Continue to next step.
4. CHECK DTC OUTPUT (ID CODE BOX (IMMOBILISER CODE ECU))
(a) Reconnect the F8 connector.
(b) Disconnect the F45 connector.
(c) Clear the DTC See: Powertrain Management/Computers and Control Systems/Information Bus/Testing and Inspection/Reading and
Clearing Diagnostic Trouble Codes.
(d) Recheck for DTCs.
Result:
B -- REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
A -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
From 08/2009
NETWORKING: LIN COMMUNICATION SYSTEM: B2785: Communication Malfunction between ECUs Connected by LIN
B2785 - Communication Malfunction between ECUs Connected by LIN
DESCRIPTION
The certification ECU (smart key ECU assembly) monitors communication between all the ECUs connected to the certification bus lines. When the
certification ECU (smart key ECU assembly) detects errors in communication with all the ECUs connected to the certification bus lines at a set
interval and 3 times in a row, DTC B2785 will be stored.
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