Tundra 4WD V8-4.6L (1UR-FE) (2010)
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Bus Buffer ECU Communication Stop Mode
- Bus Buffer ECU Communication Stop Mode
DESCRIPTION
WIRING DIAGRAM
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.
PROCEDURE
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
(a) Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt
pretensioner activation.
NEXT -- Continue to next step.
2. CHECK FOR OPEN IN CAN BUS WIRE (BUS BUFFER ECU BRANCH WIRE)
(a) Disconnect the J59 bus buffer ECU connector.
(b) Measure the resistance according to the value(s) in the table below.