Toyota Tundra. Manual — part 956

Fig. 118: Identifying A17 ECU Connector Terminal (GND1)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE VSC ACTUATOR ASSEMBLY (See REMOVAL )

TC AND CG TERMINAL CIRCUIT

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the ECU to display the DTC by blinking the ABS
warning light.

WIRING DIAGRAM

Fig. 119: Identifying TC And CG Terminal Circuit - Wiring Diagram

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra

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

INSPECTION PROCEDURE

1. INSPECT DLC3 (TC AND CG TERMINAL)

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

Standard Voltage

TESTER CONNECTION SPECIFIED CONDITION TABLE

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

NOTE:



When replacing the VSC actuator assembly, perform initialization of linear
solenoid valve calibration (See CALIBRATION ).



for 1GR-FE:

If the ECM has been replaced, it is necessary to register the Vehicle
Identification Number (VIN) (See REGISTRATION ).



for 2UZ-FE:

If the ECM has been replaced, it is necessary to register the Vehicle
Identification Number (VIN) (See REGISTRATION ).



for 3UR-FE:

If the ECM has been replaced, it is necessary to register the Vehicle
Identification Number (VIN) (See REGISTRATION ).



for 3UR-FBE:

If the ECM has been replaced, it is necessary to register the Vehicle
Identification Number (VIN) (See REGISTRATION ).

Tester Connection

Switch Condition

Specified Condition

J17-13 (TC) - Body ground

Ignition switch ON

11 to 14 V

Tester Connection

Condition

Specified Condition

J17-4 (CG) - Body ground

Always

Below 1 ohms

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra

Fig. 120: Identifying DLC3 Connector Terminal J17 (TC And CG Terminal)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: Go to step 3

OK: Go To Next Step

2. CHECK CAN COMMUNICATION SYSTEM

a. Check if a CAN communication DTC is output (See DIAGNOSTIC TROUBLE CODE

TABLE ).

Result

RESULT TABLE

B: GO TO CAN COMMUNICATION SYSTEM (See HOW TO PROCEED WITH
TROUBLESHOOTING )

A: Go To Next Step

3. CHECK HARNESS AND CONNECTOR (DLC3 - ECM)

a. Disconnect the A24 ECU connector.

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

Result

Proceed to

DTC is not output

A

DTC is output

B

Tester Connection

Condition

Specified Condition

J17-13 (TC) - A24-16 (TC)

Always

Below 1 ohms

J17-13 (TC) - Body ground

Always

10 kohms or higher

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra

Fig. 121: Identifying J17 DLC3 And A24 ECM Connector Terminal
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go To Next Step

4. CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND)

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

Fig. 122: Identifying DLC3 Connector Terminal
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go To Next Step

5. CHECK ECM (DLC3 INPUT)

Tester Connection

Condition

Specified Condition

J17-4 (CG) - Body ground

Always

Below 1 ohms

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra