Open in Bus 1 Main Bus Line [02/2019 - 12/2021]: Procedure

WARNING: This page is about a different variant/trim than selected.

CHECK FOR OPEN IN CAN BUS WIRE (NO. 2 CAN JUNCTION CONNECTOR)

Disconnect the cable from the negative (-) auxiliary battery terminal.

Disconnect the No. 2 CAN junction connector.

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)	-	-

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

Standard Resistance

Tester Connection	Condition	Specified Condition	Connected to
G102-3 (CANH) - G102-13 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω	No. 8 CAN junction connector
G102-8 (CANH) - G102-18 (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 (Central gateway ECU [network gateway ECU] CAN main wire)	B
NG (No. 8 CAN junction connector CAN main wire)	C

Result:

REPLACE NO. 2 CAN JUNCTION CONNECTOR

Result:

See step 3

Result:

See step 2

CHECK FOR OPEN IN CAN BUS WIRE (CENTRAL GATEWAY ECU [NETWORK GATEWAY ECU] - NO. 2 CAN JUNCTION CONNECTOR)

Reconnect the G102 No. 2 CAN junction connector.

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])

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

Standard Resistance

Tester Connection	Condition	Specified Condition
G72-23 (CA1H) - G72-8 (CA1L)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

Result

Proceed to
OK
NG

Result:

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

Refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021]

Result:

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CENTRAL GATEWAY ECU [NETWORK GATEWAY ECU] - NO. 2 CAN JUNCTION CONNECTOR)

CHECK FOR OPEN IN CAN BUS WIRE (NO. 8 CAN JUNCTION CONNECTOR)

Reconnect the G102 No. 2 CAN junction connector.

Disconnect the No. 8 CAN junction connector.

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. 1 CAN Junction Terminal	-	-

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

Standard Resistance

Tester Connection	Condition	Specified Condition	Connected to
N53-1 (CANH) - N53-7 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω	No. 2 CAN junction connector
N53-4 (CANH) - N53-10 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω	No. 1 CAN junction terminal

Result

Result	Proceed to
OK	A
NG (No. 1 CAN junction terminal CAN main wire)	B
NG (No. 2 CAN junction connector CAN main wire)	C

Result:

REPLACE NO. 8 CAN JUNCTION CONNECTOR

Result:

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

Result:

See step 4

CHECK FOR OPEN IN CAN BUS WIRE (NO. 1 CAN JUNCTION TERMINAL - NO. 8 CAN JUNCTION CONNECTOR)

Reconnect the N53 No. 8 CAN junction connector.

Disconnect the No. 1 CAN junction terminal connector.

*a	Front view of wire harness connector (to No. 1 CAN Junction Terminal)

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

Standard Resistance

Tester Connection	Condition	Specified Condition
N54-3 (CANH) - N54-2 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

Result

Proceed to
OK
NG

Result:

REPLACE NO. 1 CAN JUNCTION TERMINAL

Result:

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 1 CAN JUNCTION TERMINAL - NO. 8 CAN JUNCTION CONNECTOR)