Toyota Tundra. Manual — part 306

Fig. 147: Identifying A46 No. 1 Junction And J17 Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SKID CONTROL ECU
WITH ACTUATOR (CANH, CANL)

OK: REPLACE SKID CONTROL ECU WITH ACTUATOR (See REMOVAL )

15. CHECK FOR SHORT TO GND IN CAN BUS WIRE (STEERING ANGLE SENSOR)

a. Disconnect the J6 steering angle sensor connector.

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

Result

RESULT REFERENCE TABLE

A46-1 (CANH) - J17-4 (CG)

Ignition switch OFF

1 ohms or higher

OK

A46-2 (CANL) - J17-4 (CG)

A46-1 (CANH) - J17-4 (CG)

Ignition switch OFF

Below 1 ohms

NG

A46-2 (CANL) - J17-4 (CG)

Tester Connection

Switch Condition Measured Resistance Proceed to

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

Fig. 148: Identifying J87 No. 1 Junction & J17 Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO STEERING ANGLE
SENSOR (CANH, CANL)

OK: REPLACE STEERING ANGLE SENSOR (See REMOVAL )

16. CHECK FOR SHORT TO GND IN CAN BUS WIRE (CENTER AIRBAG SENSOR)

a. Disconnect the J46 center airbag sensor connector.

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

Result

RESULT REFERENCE TABLE

J87-1 (CANH) - J17-4 (CG)

Ignition switch OFF

1 ohms or higher

OK

J87-2 (CANL) - J17-4 (CG)

J87-1 (CANH) - J17-4 (CG)

Ignition switch OFF

Below 1 ohms

NG

J87-2 (CANL) - J17-4 (CG)

Tester Connection

Switch Condition Measured Resistance Proceed to

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

Fig. 149: Identifying J83 No. 1 Junction And J17 Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CENTER AIRBAG
SENSOR (CANH, CANL)

OK: REPLACE CENTER AIRBAG SENSOR (See REMOVAL )

17. CONNECT CONNECTOR

a. Reconnect the J93 No. 2 junction connector connector.

18. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - AIR

CONDITIONING AMPLIFIER)

a. Disconnect the J85 No. 2 junction connector connector.

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

Result

J83-1 (CANH) - J17-4 (CG)

Ignition switch OFF

1 ohms or higher

OK

J83-2 (CANL) - J17-4 (CG)

J83-1 (CANH) - J17-4 (CG)

Ignition switch OFF

Below 1 ohms

NG

J83-2 (CANL) - J17-4 (CG)

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

RESULT REFERENCE TABLE

Fig. 150: Identifying J85 No. 2 Junction And J17 Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: Go to step 22

OK: Go to next step

19. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - BUS

BUFFER ECU)

a. Disconnect the J98 No. 2 junction connector connector.

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

Tester Connection

Switch Condition Measured Resistance Proceed to

J85-1 (CANH) - J17-4 (CG)

Ignition switch OFF

1 ohms or higher

OK

J85-2 (CANL) - J17-4 (CG)

J85-1 (CANH) - J17-4 (CG)

Ignition switch OFF

Below 1 ohms

NG

J85-2 (CANL) - J17-4 (CG)

NOTE:

For vehicles without bus buffer ECU, go to step 20.

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra