Toyota Tundra. Manual — part 1601

Fig. 224: Throttle Actuator Control Motor - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was
moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data
from the time the malfunction occurred.

1. READ VALUE USING TECHSTREAM (+BM VOLTAGE)

a. Connect the Techstream to the DLC3.

b. Turn the ignition switch to ON.

c. Turn the Techstream ON.

d. Enter the following menus Powertrain/Engine and ECT/Data List/All Data/+BM Voltage.

e. Read the value displayed on the Techstream.

Result

DISPLAY VALUE RESULT

B: Go to step 5

A: Go to Next Step

2. INSPECT FUSE (ETCS)

a. Remove the ETCS fuse from the engine room relay block.

Result

Proceed to

Less than 11 V or more than 14 V

A

11 to 14 V

B

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

Fig. 225: Identifying ETCS Fuse On Engine Room Relay Block
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Standard resistance

RESISTANCE SPECIFIED CONDITIONS

NG: CHECK FOR SHORTS IN ALL HARNESSES AND CONNECTORS CONNECTED
TO FUSE AND REPLACE FUSE

OK: Go to Next Step

3. CHECK HARNESS AND CONNECTOR (ECM - ETCS FUSE, ETCS FUSE - BATTERY)

a. Check the harness and connector between the ETCS fuse and ECM.

1. Remove the ETCS fuse from the engine room relay block.

2. Disconnect the D74 ECM connector.

Fig. 226: Identifying ETCS Fuse And D74 ECM Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Tester Connection Condition Specified Condition

ETCS fuse

Always

Below 1 ohms

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

Standard resistance

RESISTANCE SPECIFIED CONDITIONS

b. Check the harness and connector between the ETCS fuse and positive battery cable.

1. Remove the ETCS fuse from the engine room relay block.

2. Disconnect the cable from the positive (+) battery terminal.

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

Standard resistance

RESISTANCE SPECIFIED CONDITIONS

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

4. INSPECT ECM (+BM VOLTAGE)

a. Disconnect the D74 ECM connector.

Fig. 227: Identifying D74 ECM Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Standard voltage

Tester Connection

Condition Specified Condition

ETCS fuse terminal 2 - D74-41 (+BM)

Always

Below 1 ohms

ETCS fuse terminal 2 or D74-41 (+BM) - Body ground Always

10 kohms or higher

Tester Connection

Condition

Specified

Condition

Positive battery cable - ETCS fuse terminal 1

Always

Below 1 ohms

Positive battery cable or ETCS fuse terminal 1 - Body
ground

Always

10 kohms or higher

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

VOLTAGE SPECIFIED CONDITION

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (TERMINAL E1 - BODY
GROUND)

OK: REPLACE ECM (See REMOVAL )

5. INSPECT BATTERY

a. Check that the battery is not depleted (See ON-VEHICLE INSPECTION ).

OK:

Battery is not depleted.

NG: REPLACE BATTERY

OK: Go to Next Step

6. CHECK BATTERY TERMINAL

a. Check that the battery terminals and ECM ground are not loose or corroded.

OK:

Battery terminals and ECM ground are not loose or corroded.

NG: REPAIR BATTERY TERMINAL

OK: CHECK FOR INTERMITTENT PROBLEMS (See CHECK FOR INTERMITTENT
PROBLEMS )

DTC P2119 THROTTLE ACTUATOR CONTROL THROTTLE BODY RANGE/PERFORMANCE

DESCRIPTION

The Electronic Throttle Control System (ETCS) is composed of the throttle actuator, Throttle Position (TP)
sensor, Accelerator Pedal Position (APP) sensor, and ECM. The ECM operates the throttle actuator to regulate
the throttle valve in response to driver inputs. The TP sensor detects the opening angle of the throttle valve, and
provides the ECM with feedback so that the throttle valve can be appropriately controlled by the ECM.

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE CHART

Tester Connection

Condition Specified Condition

D74-41 (+BM) - D74-81 (E1) Always

11 to 14 V

DTC

DTC Detection Condition

Trouble Area

P2119

Throttle valve opening angle
continues to vary greatly from
target opening angle (1 trip



ETCS



ECM

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra