Toyota Tundra. Manual — part 1412

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.

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

Standard resistance

STANDARD RESISTANCE SPECIFICATION

Fig. 208: Identifying ETCS Fuse

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.

Result

Proceed To

Less than 11 V or higher than 14 V

A

11 to 14 V

B

Tester Connection Condition Specified Condition

ETCS fuse

Always

Below 1 ohms

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

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

Standard resistance

STANDARD RESISTANCE SPECIFICATION

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

STANDARD RESISTANCE SPECIFICATION

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

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

Fig. 209: Identifying ETCS Fuse & D74 ECM Connector

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR

OK : Go to Next Step

4. INSPECT ECM (+BM VOLTAGE)

a. Disconnect the D74 ECM connector.

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

Standard voltage

STANDARD VOLTAGE SPECIFICATION

Tester Connection

Condition Specified Condition

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

11 to 14 V

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

Fig. 210: Identifying D74 ECM Connector

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 OR REPLACE 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

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra