Open in Bus 3 Main Bus Line [11/2017 - ]: Procedure

1. Disconnect the cable from the negative (-) battery terminal.
2. Disconnect the O106 No. 3 CAN junction connector.
3. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Front view of wire harness connector (to No. 3 CAN Junction Connector)

   *b

   to Central Gateway ECU (Network Gateway ECU)

   Standard Resistance

   Tester Connection	Condition	Specified Condition	Connected to
   O106-7 (CANH) - O106-18 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω	Central gateway ECU (network gateway ECU)
   O106-11 (CANH) - O106-22 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω	Central gateway ECU (network gateway ECU)

   Result

   Result
   OK
   NG

Result: 

OK 

REPLACE NO. 3 CAN JUNCTION CONNECTOR 

Result: 

NG 

See step  2

1. Reconnect the O106 No. 3 CAN junction connector.
2. Disconnect the O142 central gateway ECU (network gateway ECU) connector.
3. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Central Gateway ECU (Network Gateway ECU))

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O142-6 (CA3H) - O142-19 (CAYH)	Cable disconnected from negative (-) battery terminal	Below 1 Ω
   O142-21 (CA3L) - O142-20 (CAYL)	Cable disconnected from negative (-) battery terminal	Below 1 Ω

   Result

   Result
   OK
   NG

Result: 

OK 

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU). Refer to  REMOVAL [11/2017 - ] 

Result: 

NG 

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 3 CAN JUNCTION CONNECTOR)