Open in Bus 4 Main Bus Line [02/2019 - 08/2020]: Procedure

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to No. 1 CAN Junction Connector)	*b	to No. 4 CAN Junction Connector
   *c	to No. 6 CAN Junction Connector	-	-

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition	Connected to
   G96-9 (CANH) - G96-20 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω	No. 4 CAN junction connector
   G96-10 (CANH) - G96-21 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω	No. 6 CAN junction connector

   Result

   Result	Proceed to
   OK	A
   NG (No. 6 CAN junction connector CAN main wire)	B
   NG (No. 4 CAN junction connector CAN main wire)	C

Result: 

A 

REPLACE NO. 1 CAN JUNCTION CONNECTOR 

Result: 

C 

See step  3

Result: 

B 

See step  2

1. Reconnect the G96 No. 1 CAN junction connector.
2. Disconnect the No. 6 CAN junction connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to No. 6 CAN Junction Connector)	*b	to Central Gateway ECU (Network Gateway ECU)
   *c	to No. 1 CAN Junction Connector	-	-

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition	Connected to
   M31-3 (CANH) - M31-9 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω	Central gateway ECU (network gateway ECU)
   M31-4 (CANH) - M31-10 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω	No. 1 CAN junction connector

   Result

   Result	Proceed to
   OK	A
   NG (Central gateway ECU [network gateway ECU] CAN main wire)	B
   NG (No. 1 CAN junction connector CAN main wire)	C

Result: 

A 

REPLACE NO. 6 CAN JUNCTION CONNECTOR 

Result: 

B 

See step  4

Result: 

C 

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 6 CAN JUNCTION CONNECTOR - NO. 1 CAN JUNCTION CONNECTOR) 

1. Reconnect the G96 No. 1 CAN junction connector.
2. Disconnect the No. 4 CAN junction connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to No. 4 CAN Junction Connector)	*b	to Airbag ECU Assembly
   *c	to No. 1 CAN Junction Connector	-	-

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition	Connected to
   G104-2 (CANH) - G104-8 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω	Airbag ECU assembly
   G104-4 (CANH) - G104-10 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω	No. 1 CAN junction connector

   Result

   Result	Proceed to
   OK	A
   NG (Airbag ECU assembly CAN main wire)	B
   NG (No. 1 CAN junction connector CAN main wire)	C

Result: 

A 

REPLACE NO. 4 CAN JUNCTION CONNECTOR 

Result: 

B 

See step  5

Result: 

C 

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 CAN JUNCTION CONNECTOR - NO. 1 CAN JUNCTION CONNECTOR) 

1. Reconnect the M31 No. 6 CAN junction connector.
2. Disconnect the 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
   G72-22 (CA2H) - G72-7 (CA2L)	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 [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020]

Result: 

NG 

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CENTRAL GATEWAY ECU [NETWORK GATEWAY ECU] - NO. 6 CAN JUNCTION CONNECTOR) 

1. Reconnect the G104 No. 4 CAN junction connector.
2. Disconnect the airbag ECU assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Airbag ECU Assembly)

   w/ Occupant Classification System: Refer to PRECAUTION [02/2019 - 08/2020]

   w/o Occupant Classification System: Refer to PRECAUTION [11/2018 - 08/2020]

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G70-26 (CANH) - G70-27 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE AIRBAG ECU ASSEMBLY 

Refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020]

Result: 

NG 

REPLACE CAN MAIN WIRE AND CONNECTOR (AIRBAG ECU ASSEMBLY - NO. 4 CAN JUNCTION CONNECTOR)