Dtc U1117 Lost Communication With Accessory Gateway

Power Source Network. Land Cruiser. Urj200, 202 Grj200 Vdj200
Networking. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PRECAUTION

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CHECK FOR OPEN IN CAN BUS WIRE (ACCESSORY BUS BUFFER CAN BRANCH WIRE)

DTC U1117 Lost Communication with Accessory Gateway

DTC B2779 Engine Starter Communication Malfunction


DESCRIPTION


DTC Code
DTC Detection Condition
Trouble Area
U1117
There is no communication from the accessory bus buffer
  1. Accessory bus buffer CAN branch wire or connector
  2. Accessory bus buffer
B2779
There is no communication from the accessory bus buffer
  1. Accessory bus buffer CAN branch wire or connector
  2. Accessory bus buffer

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System. Dtc U1117 Lost Communication With Accessory Gateway


INSPECTION PROCEDURE

HINT:
Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
1.PRECAUTION
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work (Click here).

NEXT


2.DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.

    CAUTION:
    For vehicles with an SRS system:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
    NOTICE:
    When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Click here).

NEXT


3.CHECK FOR OPEN IN CAN BUS WIRE (ACCESSORY BUS BUFFER CAN BRANCH WIRE)
Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System. Dtc U1117 Lost Communication With Accessory Gateway

  1. Disconnect the E6 accessory bus buffer connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E6-1 (CAN+) - E6-2 (CAN-)
    		Ignition switch off
    		54 to 69 Ω
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Accessory Bus Buffer)


NG
REPAIR OR REPLACE ACCESSORY BUS BUFFER CAN BRANCH WIRE OR CONNECTOR (CAN+, CAN-)
OK

REPLACE ACCESSORY BUS BUFFER