Open in Bus 3 Main Bus Line [10/2016 - ]: Procedure

1. Disconnect the cable from the negative (-) battery terminal.
2. Disconnect the K115 No. 5 CAN junction connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to No. 5 CAN Junction Connector)
   *b	to Central Gateway ECU (Network Gateway ECU)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition	Connected to
   K115-7 (CANH) - K115-18 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω	Central gateway ECU (network gateway ECU)
   K115-11 (CANH) - K115-22 (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. 5 CAN JUNCTION CONNECTOR 

Result: 

NG 

See step  2

1. Reconnect the K115 No. 5 CAN junction connector.
2. Disconnect the K141 central gateway ECU (network gateway ECU) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K141-6 (CA3H) - K141-19 (CAYH)	Cable disconnected from negative (-) battery terminal	Below 1 Ω
   K141-21 (CA3L) - K141-20 (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 [10/2016 - 09/2020]  , or refer to  REMOVAL [09/2020 - ] 

Result: 

NG 

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 5 CAN JUNCTION CONNECTOR)