Bus Buffer ECU Communication Stop Mode [03/2017 - 10/2020]: Procedure

1. Disconnect the cable from the negative (-) battery terminal.
2. Disconnect the K100 option connector (bus buffer ECU).

   HINT: 

   Disconnect any CAN compatible optional devices from the option connector.

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K100-2 (CAN+) - K100-1 (CAN-)	Cable disconnected from negative (-) battery terminal	54 to 69 Ω

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Option Connector (Bus Buffer ECU))

   Result

   Result
   OK
   NG

Result: 

OK 

REPAIR OR REPLACE CAN COMPATIBLE OPTIONAL DEVICE 

Result: 

NG 

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (OPTION CONNECTOR (BUS BUFFER ECU))