Bus Buffer ECU Communication Stop Mode: Procedure

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

   Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

   NOTE:

   When disconnecting the cable, some systems need to be initialized after the cable is reconnected, refer to INITIALIZATION .

NEXT: Go to next step 

1. Disconnect the D50 bus buffer ECU (accessory gateway) connector.
   Fig 1: Disconnecting D50 Bus Buffer ECU (Accessory Gateway) Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   D50-1 (CAN+) - D50-2 (CAN-)	Ignition switch off	54 to 69 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Bus Buffer ECU [Accessory Gateway])

NG → REPAIR OR REPLACE BUS BUFFER ECU CAN BRANCH WIRE OR CONNECTOR (CAN+, CAN-) 

OK → REPLACE BUS BUFFER ECU (ACCESSORY GATEWAY)