Toyota Tundra (2015 year). Manual — part 2707

BRANCH WIRE OR CONNECTOR (CAN+, CAN-)

OK

REPLACE BUS BUFFER ECU

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Bus Buf...

Last Modified: 9-16-2014

6.6 J

Doc ID: RM000002VTL015X

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 - ]

Title: CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Open in CAN Main Wire; 2015 MY Tundra

[08/2014 - ]

Open in CAN Main Wire

DESCRIPTION

There may be an open circuit in the CAN main wire and/or the DLC3 branch wire when the resistance between

TROUBLE AREA

CAN main wire and

connector

No. 1 junction connector

No. 2 junction connector

ECM

Combination meter

assembly

DLC3 CAN branch wire

WIRING DIAGRAM

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Open i...

NEXT

NEXT

INSPECTION PROCEDURE

HINT:

Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication

with the CAN, which causes resistance variation.

PROCEDURE

1.

PRECAUTION

NOTICE:

After turning the Ignition switch off, waiting time may be required before disconnecting the cable from the

battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice

before proceeding with work

.

2.

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

(a) Disconnect the cable from the negative (-) battery terminal before measuring the resistances of

the main wire and the branch wire.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the

SRS system.

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected

.

3.

CHECK DLC3

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Open i...

OK

(a) Disconnect the J75 No. 1 junction connector.

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

Standard Resistance:

TESTER CONNECTION

SWITCH CONDITION

SPECIFIED CONDITION

J75-2 (CANH) - J17-6 (CANH)

Ignition switch off

Below 1 Ω

J75-13 (CANL) - J17-14 (CANL)

Ignition switch off

Below 1 Ω

Text in Illustration

*a

*b

REPAIR OR REPLACE CAN BRANCH WIRE

CONNECTED TO DLC3 (CANH, CANL)

4.

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 JUNCTION CONNECTOR - ECM)

(a) Measure the resistance according to the value(s) in the

table below.

Standard Resistance:

TESTER CONNECTION

SWITCH

CONDITION

SPECIFIED

CONDITION

J75-1 (CANH) - J75-12

Ignition switch off

108 to 132 Ω

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Open i...