Open in Bus 1 Main Bus Line [10/2018 - 08/2021]: Procedure

1. Disconnect the cable from the negative (-) auxiliary battery terminal.
2. Disconnect the No. 2 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. 2 CAN Junction Connector)	*b	to No. 8 CAN Junction Connector
   *c	to Central Gateway ECU (Network Gateway ECU)	-	-

   Standard Resistance

   Tester Connection	Condition	Specified Condition	Connected to
   F86-1 (CANH) - F86-7 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω	No. 8 CAN junction connector
   F86-2 (CANH) - F86-8 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω	Central gateway ECU (network gateway ECU)

   Result

   Result	Proceed to
   OK	A
   NG (Line to central gateway ECU (network gateway ECU))	B
   NG (Line to No. 8 CAN junction connector)	C

Result: 

A 

REPLACE NO. 2 CAN JUNCTION CONNECTOR 

Result: 

C 

See step  3

Result: 

B 

See step  2

1. Reconnect the F86 No. 2 CAN junction connector.
2. Disconnect the 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
   F61-23 (CA1H) - F61-8 (CA1L)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU). Refer to  REMOVAL [10/2018 - 07/2022] 

Result: 

NG 

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 2 CAN JUNCTION CONNECTOR) 

1. Reconnect the F86 No. 2 CAN junction connector.
2. Disconnect the No. 8 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. 8 CAN Junction Connector)	*b	to No. 2 CAN Junction Connector
   *c	to No. 2 CAN Junction Terminal	-	-

   Standard Resistance

   Tester Connection	Condition	Specified Condition	Connected to
   N111-1 (CANH) - N111-7 (CANL)	Cable disconnected from negative (-) auxiliary auxiliary battery terminal	108 to 132 Ω	No. 2 CAN junction connector
   N111-6 (CANH) - N111-12 (CANL)	Cable disconnected from negative (-) auxiliary auxiliary battery terminal	108 to 132 Ω	No. 2 CAN junction terminal

   Result

   Result	Proceed to
   OK	A
   NG (Line to No. 2 CAN junction connector)	B
   NG (Line to No. 2 CAN junction terminal)	C

Result: 

A 

REPLACE NO. 8 CAN JUNCTION CONNECTOR 

Result: 

B 

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - NO. 8 CAN JUNCTION CONNECTOR) 

Result: 

C 

See step  4

1. Reconnect the N111 No. 8 CAN junction connector.
2. Disconnect the No. 2 CAN junction terminal 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. 2 CAN Junction Terminal)

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N96-3 (P) - N96-2 (N)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE NO. 2 CAN JUNCTION TERMINAL 

Result: 

NG 

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 2 CAN JUNCTION TERMINAL - NO. 8 CAN JUNCTION CONNECTOR)