Toyota Tundra. Manual — part 1283

Fig. 321: Identifying Accelerator Pedal Replacement Components & Torque Specifications

ON-VEHICLE INSPECTION

1. INSPECT ACCELERATOR PEDAL ROD ASSEMBLY

a. Connect the Techstream to the DLC3.

b. Turn the ignition switch ON.

c. Turn the Techstream main switch ON.

d. Enter the following menus: Powertrain/Engine and ECT/Data List/ETCS/Accelerator Position No.

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

1 and Accelerator Position No. 2.

e. Read the value displayed on the tester.

Accelerator Position No. 1 standard voltage

VOLTAGE REFERENCE

Accelerator Position No. 2 standard voltage

VOLTAGE REFERENCE

If the result is not as specified, check the accelerator pedal, wire harness or ECM.

REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

2. REMOVE ACCELERATOR PEDAL ROD ASSEMBLY

a. Disconnect the accelerator pedal position sensor connector.

b. Remove the 2 nuts and accelerator pedal rod.

INSTALLATION

1. INSTALL ACCELERATOR PEDAL ROD ASSEMBLY

Condition

Specified Condition

Accelerator pedal is released

0.5 to 1.1 V

Accelerator pedal is depressed

2.6 to 4.5 V

Condition

Specified Condition

Accelerator pedal is released

1.2 to 2.0 V

Accelerator pedal is depressed

3.4 to 5.0 V

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.

NOTE:



Avoid physical shocks to the accelerator pedal rod assembly.



Do not disassemble the accelerator pedal rod assembly.

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

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. 323: Locating Nuts & Accelerator Pedal Rod

MASS AIR FLOW METER

COMPONENTS

Fig. 322: Locating Nuts & Accelerator Pedal Rod

NOTE:

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

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

Fig. 324: Identifying Mass Air Flow Meter Replacement Components & Torque Specifications

ON-VEHICLE INSPECTION

NOTE:



Perform the MAF meter inspection according to the procedures below.



Only replace the MAF meter when the MAF value in the DATA LIST (with
the engine stopped) is not within the normal operating range or there is
foreign matter on the MAF meter platinum hot wire (heater).

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra