Toyota Tundra. Manual — part 300

Fig. 125: Identifying J87 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 STEERING ANGLE
SENSOR (CANH, CANL)

OK: REPLACE STEERING ANGLE SENSOR (See REMOVAL )

16. CHECK FOR SHORT TO B+ 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) - J17-16 (BAT)

Ignition switch OFF

Below 1 ohms

NG

J87-2 (CANL) - J17-16 (BAT)

Tester Connection

Switch Condition Measured Resistance Proceed to

J83-1 (CANH) - J17-16 (BAT)

Ignition switch OFF

1 ohms or higher

OK

J83-2 (CANL) - J17-16 (BAT)

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

Fig. 126: 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 B+ 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

RESULT REFERENCE TABLE

J83-1 (CANH) - J17-16 (BAT)

Ignition switch OFF

Below 1 ohms

NG

J83-2 (CANL) - J17-16 (BAT)

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

Fig. 127: 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 B+ 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) - J17-16 (BAT)

Ignition switch OFF

1 ohms or higher

OK

J85-2 (CANL) - J17-16 (BAT)

J85-1 (CANH) - J17-16 (BAT)

Ignition switch OFF

Below 1 ohms

NG

J85-2 (CANL) - J17-16 (BAT)

NOTE:

For vehicles without bus buffer ECU, go to 20.

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

Result

RESULT REFERENCE TABLE

Fig. 128: Identifying J98 No. 2 Junction And J17 Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: Go to step 23

OK: Go to next step

20. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - 4WD

CONTROL ECU)

Tester Connection

Switch Condition Measured Resistance Proceed to

J98-1 (CANH) - J17-16 (BAT)

Ignition switch OFF

1 ohms or higher

OK

J98-2 (CANL) - J17-16 (BAT)

J98-1 (CANH) - J17-16 (BAT)

Ignition switch OFF

Below 1 ohms.

NG

J98-2 (CANL) - J17-16 (BAT)

NOTE:

For vehicles without 4WD, go to 21.

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra