Toyota Tundra. Manual — part 465

WIRING DIAGRAM

Fig. 12: Sliding Roof Drive Gear Sub-Assembly - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

Connect the Techstream to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until
communication between the tester and vehicle begins.

HINT:

When DTC B2325 and a LIN communication stop DTC are output simultaneously, first perform the
troubleshooting for the LIN communication stop DTC. Then perform the troubleshooting for DTC B2325.

1. CLEAR DTC

a. Clear the DTC (see DTC CHECK / CLEAR ).

2. CHECK FOR DTC

a. Check for DTC (see DTC CHECK / CLEAR ).

Result:

B2325 LIN COMMUNICATION BUS MALFUNCTION RESULT CHART

NOTE:

When using the Techstream with the ignition switch OFF to troubleshoot:

Result

Proceed to

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Multiplex Communication - Tundra

B: Go TO DTC B1273

C: USE SIMULATION METHOD TO CHECK (See HOW TO PROCEED WITH
TROUBLESHOOTING )

A: Go to Next Step

3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SLIDING ROOF DRIVE GEAR)

Fig. 13: Identifying J2 ECU Connector And W3 Gear Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the J2 ECU connector.

b. Disconnect the W3 gear connector.

c. Measure the resistance and voltage according to the value(s) in the table below.

Standard resistance

HARNESS AND CONNECTOR (MAIN BODY ECU - SLIDING ROOF DRIVE GEAR)
RESISTANCE SPECIFICATION

DTC B62325 output reoccurs

A

DTC B1273 output reoccurs

B

DTC output does not reoccur

C

Tester Connection

Condition Specified Condition

J2-10 (LIN2) - W3-3 (SPD)

Always

Below 1 ohms

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Multiplex Communication - Tundra

Standard voltage

HARNESS AND CONNECTOR (MAIN BODY ECU - SLIDING ROOF DRIVE GEAR)
VOLTAGE SPECIFICATION

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

4. REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)

a. Temporarily replace the main body ECU with a new or normally functioning one.

b. Clear the DTC (see DTC CHECK / CLEAR ).

5. CHECK FOR DTC

a. Check for DTC (see DTC CHECK / CLEAR ).

Result:

HARNESS AND CONNECTOR (MAIN BODY ECU - SLIDING ROOF DRIVE GEAR)
RESULT CHART

B: REMOVE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (See DISASSEMBLY )

A: Go to Next Step

END

INTEGRATION CONTROL AND PANEL ASSEMBLY COMMUNICATION ERROR

DESCRIPTION

The LIN communication of the components related to the mirror heater occurs between the air conditioning
amplifier (A/C ECU) and integration control and panel.

WIRING DIAGRAM

J2-10 (LIN2) or W3-3 (SPD) - Body ground Always

10 kohms or higher

Tester Connection

Condition Specified Condition

J2-10 (LIN2) or W3-3 (SPD) - Body ground Always

Below 1 V

Result

Proceed to

DTC B2325 output does not reoccur

A

DTC B2325 output reoccurs

B

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Multiplex Communication - Tundra

Fig. 14: Integration Control And Panel Assembly Communication - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

Connect the Techstream to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until
communication between the tester and vehicle begins.

1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - INTEGRATION

CONTROL AND PANEL)

NOTE:

When using the Techstream with the ignition switch OFF to troubleshoot:

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Multiplex Communication - Tundra