Toyota Tundra. Manual — part 270

10. CHECK COMBINATION METER ECU

Fig. 23: Identifying J28 ECU Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the J28 ECU connector.

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

CONNECTOR TERMINAL WIRING COLOR REFERENCE

Terminal No. (Symbols)

Wiring Color Switch Condition Specified Condition

J46-13 (CANH) - J46-22 (CANL)

BR - W

Ignition switch OFF

54 to 69 ohms

J46-13 (CANH) - J46-25 (E1)

BR - W-B

Ignition switch OFF 200 ohms or higher

J46-22 (CANL) - J46-25 (E1)

W - W-B

Ignition switch OFF 200 ohms or higher

J46-13 (CANH) - J17-16 (BAT)

BR - P

Ignition switch OFF 6 kohms or higher

J46-22 (CANL) - J17-16 (BAT)

W - P

Ignition switch OFF 6 kohms or higher

Terminal No. (Symbols)

Wiring Color Switch Condition Specified Condition

J28-33 (CANH) - J28-34 (CANL)*1

SB - W

Ignition switch OFF

108 to 132 ohms

J28-33 (CANH) - J28-40 (E1)*1

SB - W-B

Ignition switch OFF 200 ohms or higher

J28-34 (CANL) - J28-40 (E1)*1

W - W-B

Ignition switch OFF 200 ohms or higher

J28-33 (CANH) - J28-18 (B)*1

SB - LG

Ignition switch OFF 6 kohms or higher

J28-34 (CANL) - J28-18 (B)*1

W - LG

Ignition switch OFF 6 kohms or higher

J28-22 (CANH) - J28-21 (CANL)*2

Y - W

Ignition switch OFF

108 to 132 ohms

J28-22 (CANH) - J28-40 (E1)*2

Y - W-B

Ignition switch OFF 200 ohms or higher

J28-21 (CANL) - J28-40 (E1)*2

W - W-B

Ignition switch OFF 200 ohms or higher

J28-22 (CANH) - J28-18 (B)*2

Y - LG

Ignition switch OFF 6 kohms or higher

J28-21 (CANL) - J28-18 (B)*2

W - LG

Ignition switch OFF 6 kohms or higher

HINT:



*1: for V bus



*2: for MS bus

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

11. CHECK STEERING ANGLE SENSOR

Fig. 24: Identifying J6 Steering Angle Sensor Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the J6 sensor connector.

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

CONNECTOR TERMINAL WIRING COLOR REFERENCE TABLE

12. CHECK 4WD CONTROL ECU

HINT:

For vehicle with 4 wheel drive only.

Fig. 25: Identifying A25, A26 & J17 ECU Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Terminal No. (Symbols)

Wiring Color Switch Condition Specified Condition

J6-10 (CANH) - J6-9 (CANL)

G - W

Ignition switch OFF

54 to 69 ohms

J6-10 (CANH) - J6-2 (ESS)

G - W-B

Ignition switch OFF 200 ohms or higher

J6-9 (CANL) - J6-2 (ESS)

W - W-B

Ignition switch OFF 200 ohms or higher

J6-10 (CANH) - J6-3 (BAT)

G - R

Ignition switch OFF 6 kohms or higher

J6-9 (CANL) - J6-3 (BAT)

W - R

Ignition switch OFF 6 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

a. Disconnect the A25 and A26 ECU connectors.

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

CONNECTOR TERMINAL WIRING COLOR REFERENCE TABLE

13. CHECK BUS BUFFER ECU

HINT:

For vehicle with bus buffer ECU only.

a. Disconnect the J59 ECU connector.

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

Fig. 26: Identifying J59 ECU Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

CONNECTOR TERMINAL WIRING COLOR REFERENCE TABLE

14. CHECK FRONT POWER SEAT CONTROL ECU AND SWITCH LH

HINT:

Terminal No. (Symbols)

Wiring Color Switch Condition Specified Condition

A25-19 (CANH) - A25-20 (CANL)

BE - W

Ignition switch OFF

54 to 69 ohms

A25-19 (CANH) - A26-4 (GND)

BE - W-B

Ignition switch OFF 200 ohms or higher

A25-20 (CANL) - A26-4 (GND)

W - W-B

Ignition switch OFF 200 ohms or higher

A25-19 (CANH) - J17-16 (BAT)

BE - P

Ignition switch OFF 6 kohms or higher

A25-20 (CANL) - J17-16 (BAT)

W - P

Ignition switch OFF 6 kohms or higher

Terminal No. (Symbols)

Wiring Color Switch Condition Specified Condition

J59-3 (CAN+) - J59-2 (CAN-)

P - W

Ignition switch OFF

54 to 69 ohms

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

For vehicle with front power seat control system (w/ Seat memory) only.

Fig. 27: Identifying Z9 And Z10 ECU Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the Z9 and Z10 ECU connectors.

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

CONNECTOR TERMINAL WIRING COLOR REFERENCE TABLE

15. CHECK OUTER MIRROR CONTROL ECU

HINT:

For vehicle with front power seat control system (w/ Seat memory) only.

Fig. 28: Identifying N7 And N8 ECU Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the N7 and N8 ECU connectors.

Terminal No. (Symbols)

Wiring Color Switch Condition Specified Condition

Z10-5 (CANH) - Z10-1 (CANL)

GR - W

Ignition switch OFF

54 to 69 ohms

Z10-5 (CANH) - Z9-1 (GND)

GR - W-B

Ignition switch OFF 200 ohms or higher

Z10-1 (CANL) - Z9-1 (GND)

W - W-B

Ignition switch OFF 200 ohms or higher

Z10-5 (CANH) - Z9-5 (+B)

GR - L

Ignition switch OFF 6 kohms or higher

Z10-1 (CANL) - Z9-5 (+B)

W - L

Ignition switch OFF 6 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra