Toyota Tundra (2015 year). Manual — part 2716

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Short t...

INSPECTION PROCEDURE

NOTICE:

The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as

.

HINT:

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

with the CAN, which causes resistance variation.

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Short t...

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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

CAUTION:

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

SRS system.

NOTICE:

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

.

3.

CHECK FOR SHORT TO B+ IN CAN BUS WIRE (DLC3 CAN BRANCH WIRE)

(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

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Short t...

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TESTER CONNECTION

SWITCH CONDITION

SPECIFIED CONDITION

J17-6 (CANH) - J17-16 (BAT)

Ignition switch off

6 kΩ or higher

J17-14 (CANL) - J17-16 (BAT)

Ignition switch off

6 kΩ or higher

Text in Illustration

*a

REPAIR OR REPLACE CAN BRANCH WIRE

CONNECTED TO DLC3 (CANH, CANL)

4.

CONNECT CONNECTOR

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

5.

CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR)

(a) Disconnect the J74 No. 2 junction connector.

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

Standard Resistance:

TESTER CONNECTION

SWITCH CONDITION

SPECIFIED CONDITION

J17-6 (CANH) - J17-16 (BAT)

Ignition switch off

6 kΩ or higher

J17-14 (CANL) - J17-16 (BAT)

Ignition switch off

6 kΩ or higher

Text in Illustration

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Short t...