Toyota Tundra. Manual — part 277

Standard resistance

STANDARD RESISTANCE SPECIFICATION TABLE

Fig. 38: Identifying J97 No. 3 Junction Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: Go to step 8

OK: Go to Next Step

4. CONNECT CONNECTOR

a. Reconnect the J97 No. 3 junction connector connector.

5. CHECK FOR OPEN IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - COMBINATION

METER ECU)

a. Disconnect the J95 No. 3 junction connector connector.

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

Standard resistance

STANDARD RESISTANCE SPECIFICATION TABLE

Tester Connection

Switch Condition Specified Condition

J97-1 (CANH) - J97-2 (CANL) Ignition switch OFF

108 to 132 ohms

Tester Connection

Switch Condition Specified Condition

J95-1 (CANH) - J95-2 (CANL) Ignition switch OFF

108 to 132 ohms

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

Fig. 39: Identifying J95 No. 3 Junction Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: Go to step 6

OK: REPLACE NO. 3 JUNCTION CONNECTOR

6. CONNECT CONNECTOR

a. Reconnect the J95 No. 3 junction connector connector.

7. CHECK FOR OPEN IN CAN BUS WIRE (COMBINATION METER ECU - NO. 3 JUNCTION

CONNECTOR)

a. Disconnect the J28 combination meter ECU connector.

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

Standard resistance

STANDARD RESISTANCE SPECIFICATION TABLE

Tester Connection

Switch Condition Specified Condition

J28-22 (CANH) - J28-21 (CANL) Ignition switch OFF

108 to 132 ohms

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

Fig. 40: Identifying J28 Combination Meter ECU Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO COMBINATION METER
ECU (COMBINATION METER ECU - NO. 3 JUNCTION CONNECTOR)

OK: REPLACE COMBINATION METER ASSEMBLY (See REMOVAL )

8. CONNECT CONNECTOR

a. Reconnect the J97 No. 3 junction connector connector.

9. CHECK FOR OPEN IN CAN BUS WIRE (MAIN BODY ECU - NO. 3 JUNCTION

CONNECTOR)

a. Disconnect the J2 main body ECU connector.

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

Standard resistance

STANDARD RESISTANCE SPECIFICATION TABLE

Tester Connection

Switch Condition Specified Condition

J2-16 (CANP) - J2-15 (CANN) Ignition switch OFF

108 to 132 ohms

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

Fig. 41: Identifying J2 Main Body ECU Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO MAIN BODY ECU (MAIN
BODY ECU - NO. 3 JUNCTION CONNECTOR)

OK: REPLACE MAIN BODY ECU

10. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - FRONT

POWER SEAT CONTROL ECU AND SWITCH LH)

a. Disconnect the J90 No. 3 junction connector connector.

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

Result

RESULT REFERENCE TABLE

Tester

Connection

Switch

Condition

Specified

Condition

Proceed to

J90-1 (CANH)

- J90-2

(CANL)

Ignition switch

OFF

1 ohms or

higher

OK

Below 1 ohms

NG

J90-1 (CANH)

- J17-4 (CG) Ignition switch

OFF

1 ohms or

higher

OK

J90-2 (CANL)

- J17-4 (CG)

J90-1 (CANH)

- J17-4 (CG) Ignition switch

OFF

Below 1 ohms

NG

J90-2 (CANL)

- J17-4 (CG)

J90-1 (CANH)

- J17-16

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra