Toyota Tundra. Manual — part 271

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

CONNECTOR TERMINAL WIRING COLOR REFERENCE TABLE

16. CHECK MULTIPLEX TILT AND TELESCOPIC ECU

HINT:

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

Fig. 29: Identifying J47 ECU Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the J47 ECU connector.

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

CONNECTOR TERMINAL WIRING COLOR REFERENCE TABLE

DIAGNOSIS SYSTEM

1. BUS CHECK

a. Select "CAN Bus Check" from the "System Select".

Terminal No. (Symbols)

Wiring Color Switch Condition Specified Condition

N8-1 (CAN) - N8-21 (CGND)

LG - W

Ignition switch OFF

54 to 69 ohms

N8-11 (CAN) - N7-9 (GND)

LG - W-B

Ignition switch OFF 200 ohms or higher

N8-21 (CGND) - N7-9 (GND)

W - W-B

Ignition switch OFF 200 ohms or higher

N8-1 (CAN) - N7-3 (B)

LG - R

Ignition switch OFF 6 kohms or higher

N8-21 (CGND) - N7-3 (B)

W - R

Ignition switch OFF 6 kohms or higher

Terminal No. (Symbols)

Wiring Color Switch Condition Specified Condition

J47-5 (CANH) - J47-14 (CANL)

BE - W

Ignition switch OFF

54 to 69 ohms

J47-5 (CANH) - J47-11 (GND)

BE - W-B

Ignition switch OFF 200 ohms or higher

J47-14 (CANL) - J47-11 (GND)

W - W-B

Ignition switch OFF 200 ohms or higher

J47-5 (CANH) - J47-2 (+B)

BE - V

Ignition switch OFF 6 kohms or higher

J47-14 (CANL) - J47-2 (+B)

W - V

Ignition switch OFF 6 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

2. CHECK INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN

COMMUNICATION

a. Systems (ECUs and sensors) that use CAN communication vary depending on the vehicle's

optional settings. Check which systems (ECUs and sensors) are installed on the vehicle.

ECU/SENSOR NAME REFERENCE

3. DTC TABLE BY ECU

HINT:



In the CAN communication system, CAN communication system DTCs output by the ECU can be
displayed by using the Techstream.



If CAN communication system DTCs are output, the trouble cannot be determined solely from the
DTCs. Perform troubleshooting according to HOW TO PROCEED WITH
TROUBLESHOOTING .

a. MULTIPLEX TILT AND TELESCOPIC ECU

ECU/Sensor name (Tester

display)

Installed to

Skid control ECU with

actuator (ABS/VSC/TRAC)

All vehicles

Air conditioning amplifier

(Air Conditioner)

All vehicles

ECM (Engine)

All vehicles

Main body ECU (Main Body)

All vehicles

Combination meter ECU

(Combination Meter)

All vehicles

Center airbag sensor assembly

(SRS Airbag)

All vehicles

Steering angle sensor

(Steering Angle Sensor)

All vehicles

Bus buffer ECU (Accessory

Gateway)

Vehicle with bus buffer ECU

(w/ Bus buffer ECU)

4WD control ECU (Four

Wheel Drive Control)

Vehicle with 4 wheel drive

(w/ 4WD)

Front power seat control ECU

and switch LH (Driver Seat)

Vehicle with front power seat

control system (w/ Seat

memory)

Outer mirror control ECU

(Driver Door/Mirror)

Vehicle with front power seat

control system (w/ Seat

memory)

Multiplex tilt and telescopic

ECU (Tilt & Telescopic)

Vehicle with front power seat

control system (w/ Seat

memory)

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

HINT:

DTC communication uses the CAN communication system.

DTC TABLE

b. MAIN BODY ECU

HINT:

DTC communication uses the CAN communication system.

DTC TABLE

c. ECM

For Vehicle with 2UZ-FE only.

HINT:

DTC communication uses the CAN communication system.

DTC TABLE

d. SKID CONTROL ECU WITH ACTUATOR

HINT:

DTC communication uses the CAN communication system.

DTC TABLE

DTC No.

Detection Item

B2621 Communication Interruption

DTC No.

Detection Item

U1002 Lost Communication with Gateway Module
U0199 Lost Communication with "Door Control Module A"
U0208 Lost Communication with "Seat Control Module A"
U1115 Lost Communication with Tilt and Telescopic Module

DTC No.

Detection Item

U0101 Lost Communication with TCM

DTC No.

Detection Item

U0073 Control Module Communication Bus OFF
U0100 Lost Communication with ECM/PCM "A"
U0114 Lost Communication with 4-Wheel Drive Clutch Control Module

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

e. COMBINATION METER ECU

HINT:

DTC communication uses the CAN communication system.

DTC TABLE

f. AIR CONDITIONING AMPLIFIER

HINT:

DTC communication uses the CAN communication system.

DTC TABLE

g. STEERING ANGLE SENSOR

HINT:

The steering angle sensor is connected to the CAN communication system but CAN
communication DTCs are not output.

h. CENTER AIRBAG SENSOR

HINT:

The center airbag sensor is connected to the CAN communication system but CAN communication
DTCs are not output.

i. 4WD CONTROL ECU

For vehicle with 4 wheel drive only.

HINT:

U0123 Lost Communication with Yaw Rate Sensor Module
U0124 Deceleration Sensor Communication Circuit Malfunction
U0126 Lost Communication with Steering Angle Sensor Module

DTC No.

Detection Item

U0100 Lost Communication with ECM/PCM "A"
U0129 Lost Communication with Brake System Control Module

DTC No.

Detection Item

B1499 Multiplex Communication Circuit

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra