Toyota Tundra. Manual — part 1465

a. Install the accelerator pedal rod with the 2 nuts.

Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf)

b. Connect the accelerator pedal position sensor connector.

2. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

Fig. 348: Locating Accelerator Pedal Position Sensor Connector

MASS AIR FLOW METER

COMPONENTS



Do not disassemble the accelerator pedal assembly.

Fig. 347: Locating Accelerator Pedal Position Sensor Connector

NOTE:

Some systems need to be initialized after the cable is reconnected. (See
INITIALIZATION ).

2008 Toyota Tundra

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

Fig. 349: Identifying Mass Air Flow Meter Replacement Components With Torque Specification

ON-VEHICLE INSPECTION

1. CHECK MASS AIR FLOW METER

a. Check the mass air flow value.

1. Connect the Techstream to the DLC3.

2. Turn the ignition switch ON.

3. Push the Techstream main switch ON.

4. Enter the following menus: Powertrain/Engine/Data List/All Data/MAF.

5. Blow air into the MAF meter, and check that the MAF value fluctuates.

If the result is not as specified, check the MAF meter. (See INSPECTION ), or wiring and

2008 Toyota Tundra

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

ECM, see DTC P0102 MASS OR VOLUME AIR FLOW CIRCUIT LOW INPUT; DTC
P0103 MASS OR VOLUME AIR FLOW CIRCUIT HIGH INPUT.

REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

Fig. 350: Checking Mass Air Flow Meter

2. REMOVE MASS AIR FLOW METER

a. Disconnect the MAF connector.

b. Remove the 2 screws and MAF meter.

Fig. 351: Locating Screws & MAF Meter Connectors

INSPECTION

1. INSPECT MASS AIR FLOW METER

NOTE:



Some systems need to be initialized after the cable is reconnected.
(See INITIALIZATION ).



After the ignition switch is turned OFF, the navigation system
requires approximately 90 seconds to record various types of
memory and settings. As a result, after turning the ignition switch
OFF, wait 90 seconds or more before disconnecting the cable from
the negative (-) battery terminal.

2008 Toyota Tundra

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

a. Check the output voltage.

1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).

2. Using a voltmeter, connect the positive (+) tester probe to terminal 3 (VG), and negative (-)

tester probe to terminal 2 (E2G).

3. Blow air into the MAF meter, and check that the voltage fluctuates.

If the result is not as specified, replace the MAF meter.

Fig. 352: Inspecting Mass Air Flow Meter

b. Check the IAT sensor.

Fig. 353: Mass Air Flow Meter Temperature Graph

NOTE:

While using the battery during inspection, do not bring the
positive and negative tester probes too close to each other as a
short circuit may occur.

2008 Toyota Tundra

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