Toyota Tundra. Manual — part 1142

O2S (A/FS)
Heater
Monitor

O2S (A/FS) heater
monitor:
Not Avl or Avail

-

-

O2S (A/FS)
Heater
Monitor

O2S (A/FS) heater
monitor:
Compl or Incmpl

-

-

O2S (A/FS)
Heater
Monitor

O2S (A/FS)
monitor:
Not Avl or Avail

-

-

O2S (A/FS)
Monitor

O2S (A/FS)
monitor:
Compl or Incmpl

-

-

2nd Air
Monitor

2nd air monitor:
Not Avl or Avail

-

-

2nd Air
Monitor

2nd air monitor:
Compl or Incmpl

-

-

EVAP
Monitor

EVAP monitor:
Not Avl or Avail

-

-

EVAP
Monitor

EVAP monitor:
Compl or Incmpl

-

-

Catalyst
Monitor

Catalyst monitor:
Not Avl or Avail

-

-

Catalyst
Monitor

Catalyst monitor:
Compl or Incmpl

-

-

Component
Monitor ENA

Comprehensive
component
monitor:
Unable or Enable

-

-

Component
Monitor
CMPL

Comprehensive
component
monitor:
Compl or Incmpl

-

-

Fuel System
Monitor ENA

Fuel system
monitor:
Unable or Enable

-

-

Fuel System
Monitor
CMPL

Fuel system
monitor:
Compl or Incmpl

-

-

Misfire
Monitor ENA

Misfire monitor:
Unable or Enable

-

-

Misfire
Monitor
CMPL

Misfire monitor:
Compl or Incmpl

-

-

EGR Monitor
ENA

EGR monitor:
Unable or Enable

-

-

2008 Toyota Tundra

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

EGR Monitor
CMPL

EGR monitor:
Compl or Incmpl

-

-

Heater
Monitor ENA

O2S (A/FS) heater
monitor:
Unable or Enable

-

-

Heater
Monitor
CMPL

O2S (A/FS) heater
monitor:
Compl or Incmpl

-

-

O2S (A/FS)
Monitor ENA

O2S (A/FS)
monitor:
Unable or Enable

-

-

O2S (A/FS)
Monitor
CMPL

O2S (A/FS)
monitor:
Compl or Incmpl

-

-

A/C Monitor
ENA

A/C monitor:
Unable or Enable

-

-

A/C Monitor
CMPL

A/C monitor:
Compl or Incmpl

-

-

2nd Air
Monitor ENA

2nd air monitor:
Unable or Enable

-

-

2nd Air
Monitor
CMPL

2nd air monitor:
Compl or Incmpl

-

-

EVAP
Monitor ENA

EVAP monitor:
Unable or Enable

-

-

EVAP
Monitor
CMPL

EVAP monitor:
Compl or Incmpl

-

-

Heated Cat
Monitor ENA

Heated catalyst
monitor:
Unable or Enable

-

-

Heated Cat
Monitor
CMPL

Heated catalyst
monitor:
Compl or Incmpl

-

-

Catalyst
Monitor ENA

Catalyst monitor:
Unable or Enable

-

-

Catalyst
Monitor
CMPL

Catalyst monitor:
Compl or Incmpl

-

-

MIL

MIL status:
ON or OFF

ON: MIL ON

-

Model Code

Model code

-

Identifying model code: GSK5#

Engine Type

Engine type

-

Identifying engine type: 1GRFE

Cylinder
Number

Cylinder number:
Min.: 0, Max.: 255

-

Identifying cylinder number: 6

2008 Toyota Tundra

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

2. ACTIVE TEST

HINT:

Using the Techstream to perform the Active Tests allows relays, VSVs and actuators and other items to
be operated without removing any parts. This non-intrusive functional inspection can be very useful
because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active
Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed
while performing Active Tests.

a. Connect the Techstream to the DLC3.

b. Turn the ignition switch ON.

c. Turn the Techstream ON.

d. Enter the following menus: Powertrain/Engine and ECT/Active Test.

e. According to the display on Techstream, perform the "Active Test".

ACTIVE TEST CHART

Transmission
Type

Transmission type

-

Identifying transmission type: 5AT

Destination

Destination

-

Identifying destination: A (America)

Model Year

Model year:
Min.: 1900, Max.:
2155

-

Identifying model year: 200#

System
Identification

System
identification

-

Identifying engine system: GASOLINE
(gasoline engine)

HINT:



*3: If no idling conditions are specified, the shift lever should be in the N or P position, and
the A/C switch and all accessory switches should be OFF.



*4: Data List values are only displayed when performing the following Active Tests:
Control the VVT Linear (Bank 1), Control the VVT Linear (Bank 2), Control the VVT
Exhaust Linear (Bank 1) and Control the VVT Exhaust Linear (Bank 2). For other Active
Tests, the Data List value will be 0.

Tester Display

Test Part

Control

Range

Diagnostic Note

Control the
Injection Volume

Change injection
volume

-12.5 to 24.8%



All injectors tested at the same
time



Perform test at less than 3000
RPM



Injection volume can be changed
in 1% graduations within control
range



Perform test at less than 3000

2008 Toyota Tundra

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

Control the
Injection Volume
for A/F Sensor

Change injection
volume

Lower by
12.5% or
increase by
24.8%

RPM



Control the Injection Volume for
A/F Sensor enables checking and
graphing of A/F (Air Fuel Ratio)
sensor and Heated Oxygen
(HO2) sensor voltage outputs



To conduct test, enter the
following menus: Active
Test/Control the Injection
Volume for A/F Sensor/Data
List/A/F Control System/AFS B1
S1 and O2S B1 S2

Activate the VSV
for Secondary Air
Control

Activate the
Secondary Air
System

ON/OFF



Do not perform test for 5 seconds
or more



After test, do not perform test
again for 30 seconds

Activate the VSV
for Intake Control

Activate VSV for
intake control

ON/OFF

-

Activate the VSV
for EVAP Control

Activate purge VSV
control

ON/OFF

-

Control the A/C
Cut Signal

Control the A/C cut
signal

ON/OFF

-

Control the Fuel
Pump Speed

Activate fuel pump
(C/OPN Relay)

ON/OFF

Test possible when following
conditions met:



Ignition switch ON



Engine is stopped

Connect the TC
and TE1

Turn on and off TC
and CG (TE1)
connection

ON/OFF



ON: TC and TE1 connected



OFF: TC and TE1 disconnected

Control the Idle
Fuel Cut Prohibit

Prohibit idling fuel
cut control

ON/OFF

-

Prohibit the
Catalyst OT
Misfire prevent
F/C

Prohibit catalyst
overheat malfunction
prevention fuel cut
operation during
misfire

ON: Fuel cut is
prohibited

Confirm that the Vehicle is Stopped
and Engine Speed is 3000 RPM or less.

Active the Starter
Relay

Activate starter relay ON/OFF

-

Active the ACC
Cut Relay

Activate ACC cut
relay

ON/OFF

Test possible when following
conditions met:



Ignition switch ON



Engine is stopped

2008 Toyota Tundra

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