Toyota Tundra. Manual — part 311

a. Disconnect the A25 4WD control ECU connector.

b. Reconnect the cable to the negative (-) battery terminal.

c. Select "CAN Bus Check" on the Techstream.

Result

RESULT REFERENCE

B: Go to step 14

A: Go to next step

13. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (4WD CONTROL ECU BRANCH

WIRE)

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

Standard resistance

STANDARD RESISTANCE SPECIFICATION TABLE

Fig. 165: Identifying A25 4WD Control ECU Connector

NOTE:

For vehicles without 4WD, go to step 14.

Result

Proceed

to

Four Wheel Drive Control not displayed on Techstream.

A

Several ECUs and sensors other than Four Wheel Drive Control not displayed on
Techstream.

B

Tester Connection

Switch Condition Specified Condition

A25-19 (CANH) - A25-20 (CANL) Ignition switch OFF

54 to 69 ohms

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (4WD CONTROL ECU)

OK: REPLACE 4WD CONTROL ECU (See REMOVAL )

14. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (AIR CONDITIONING

AMPLIFIER BRANCH WIRE)

a. Disconnect the J19 air conditioning amplifier connector.

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

Standard resistance

STANDARD RESISTANCE SPECIFICATION TABLE

Fig. 166: Identifying J19 Air Conditioning Amplifier Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (AIR CONDITIONING
AMPLIFIER)

OK: REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (See AIR CONDITIONING
AMPLIFIER )

Tester Connection

Switch Condition Specified Condition

J19-11 (CANH) - J19-12 (CANL) Ignition switch OFF

54 to 69 ohms

2009 Toyota Tundra

2009 ACCESSORIES & EQUIPMENT CAN Communication - Tundra

2009 ACCESSORIES AND EQUIPMENT

Cruise Control - Tundra

CRUISE CONTROL SYSTEM

PRECAUTION

1. HANDLING PRECAUTION FOR CRUISE CONTROL SYSTEM

a. Turn the cruise control main switch OFF when not using the cruise control system.

b. Be careful as the vehicle speed increases when driving downhill with the cruise control system on.

c. The RESUME / ACCEL operation changes according to the cruise control system status. When the

cruise control system is operating, ACCEL operates. When the cruise control system is not
operating, RESUME operates.

d. When the cruise control system is operating and the CRUISE main indicator light blinks, turn the

cruise control main switch OFF to reset the cruise control system. After the reset, if the cruise
control main switch cannot be turned ON, or the cruise control system is canceled immediately
after turning the cruise control main switch ON, the system may have a malfunction.

e. Do not use the cruise control system where the road conditions are as follows:



Heavy traffic



Steep decline



Roads with sharp turns



Icy or snowy roads



Slippery roads

PARTS LOCATION

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Cruise Control - Tundra

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Cruise Control - Tundra

Fig. 1: Identifying Cruise Control System Components Location (1 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Cruise Control - Tundra