Toyota Tundra. Manual — part 1136

malfunctioning

Fuel System

Status (Bank 2)

Fuel system status (bank 2)



OL (Open Loop): Has not yet satisfied
conditions to go closed loop



CL (Closed Loop): Using heated oxygen sensor
as feedback for fuel control



OLDrive: Open loop due to driving conditions
(fuel enrichment)



OLFault: Open loop due to detected system
fault



CLFault: Closed loop but heated oxygen
sensor, which used for fuel control,
malfunctioning

O2FT B1 S2

Fuel trim at heated oxygen
sensor

-

O2FT B2 S2

Fuel trim at heated oxygen
sensor

-

AF FT B1 S1 Fuel trim at A/F sensor

-

AFS B1 S1

A/F sensor current

-

AF FT B2 S1 Fuel trim at A/F sensor

-

Catalyst Temp

(B1 S1)

Estimated catalyst temperature
(bank 1 sensor 1)

-

Catalyst Temp

(B2S1)

Estimated catalyst temperature
(bank 2 sensor 1)

-

Catalyst Temp

(B1 S2)

Estimated catalyst temperature
(bank 1 sensor 2)

-

Catalyst Temp

(B2 S2)

Estimated catalyst temperature
(bank 2 sensor 2)

-

Sub O2S

Impedance

B1S2

Sub heated oxygen sensor
impedance (bank 1 sensor 2)

-

Sub O2S

Impedance

B2S2

Sub heated oxygen sensor
impedance (bank 2 sensor 2)

-

Initial Engine

Coolant Temp

Initial engine coolant
temperature

-

Initial Intake Air

Temp

Initial intake air temperature

-

Injection

Volume

(Cylinder1)

Injection volume

-

Air pump

pressure

(absolute)

Air pump pressure (absolute)

-

Air Pump

2008 Toyota Tundra

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

Pulsation

Pressure

Air pump pulsation pressure

-

Air Pump2

Pressure

(Absolute)

Air pump 2 pressure (absolute)

-

Air Pump2

Pulsation

Pressure

Air pump 2 pulsation pressure

-

ACC Relay

ACC relay status

-

Starter Relay

Starter relay status

-

Starter Signal Starter switch signal

-

Starter Control Starter switch status

-

Power Steering

Switch

Power steering switch

-

Power Steering

Signal

Power steering signal (history)

-

Closed Throttle

Position SW

Closed throttle position switch

-

A/C Signal

A/C signal

-

Neutral Position

SW Signal

Park/Neutral position (PNP)
switch signal

-

Electrical Load

Signal

Electrical load signal

-

Stop Light

Switch

Stop light switch

-

Fuel Cut

Condition

Fuel cut condition

-

Battery Voltage Battery voltage

-

Atmosphere

Pressure

Atmosphere pressure

-

Secondary Air

Control VSV

Secondary air injection system
status

-

ACIS VSV

VSV for Acoustic Control
Induction System (ACIS)

-

ACT VSV

A/C cut status for Active Test

-

VVT Control

Status (Bank 2)

VVT control status

-

EVAP Purge

VSV

EVAP Purge VSV

-

Fuel

Pump/Speed

Status

Fuel pump/speed status

-

VVT Control

Status (Bank 1)

VVT control status

-

2008 Toyota Tundra

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

Vacuum Pump

Key-off EVAP system leak
detection pump status

Refer to EVAP SYSTEM

EVAP System

Vent Value

Key-off EVAP system vent
valve status

-

TC and TE1

TC and CG (TE1) terminals of
DLC3

-

AI Operation

Prohibit

Secondary air injection system
operation prohibit

-

Engine Speed of

Cyl #1

Engine speed for cylinder 1

-

Engine Speed of

Cyl #2

Engine speed for cylinder 2

-

Engine Speed of

Cyl #3

Engine speed for cylinder 3

-

Engine Speed of

Cyl #4

Engine speed for cylinder 4

-

Engine Speed of

Cyl #5

Engine speed for cylinder 5

-

Engine Speed of

Cyl #6

Engine speed for cylinder 6

-

Av Engine

Speed of All Cyl

Engine speed for all cylinders

-

VVT Aim

Angle (Bank 1)

VVT aim angle

-

VVT Change

Angle (Bank 1)

VVT change angle

-

VVT OCV Duty

(Bank 1)

VVT OCV operation duty

-

VVT Aim

Angle (Bank 2)

VVT aim angle

-

VVT Change

Angle (Bank 2)

VVT change angle

-

VVT OCV Duty

(Bank 2)

VVT OCV operation duty

-

Idle Fuel Cut

Fuel cut idle

ON: when throttle valve fully closed and engine
speed over 3500 RPM

FC TAU

Fuel cut during very light load

Fuel cut being performed under very light load to
prevent engine combustion from becoming
incomplete

Ignition

Ignition counter

-

Cylinder #1

Misfire Count

Cylinder #1 misfire

Only displayed during idling

Cylinder #2

Misfire Count

Cylinder #2 misfire

Only displayed during idling

2008 Toyota Tundra

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

Cylinder #3

Misfire Count

Cylinder #3 misfire

Only displayed during idling

Cylinder #4

Misfire Count

Cylinder #4 misfire

Only displayed during idling

Cylinder #5

Misfire Count

Cylinder #5 misfire

Only displayed during idling

Cylinder #6

Misfire Count

Cylinder #6 misfire

Only displayed during idling

All Cylinders

Misfire Count

All cylinders misfire

Only displayed during idling

Misfire RPM

Engine speed when misfire
occurred

-

Misfire Load

Engine load when misfire
occurred

-

Misfire Margin Margin to detect engine misfire

-

Catalyst OT MF

F/C

Catalyst over temperature
Misfire prevention fuel cut

-

Cat OT MF F/C

History

Catalyst over temperature
Misfire prevention fuel cut
history:

-

Cat OT MF F/C

Cylinders

Display of fuel cut operation in
No. 1 cylinder (if certain level of
misfire malfunction is detected)

-

Cat OT MF F/C

Cylinder #2

Display of fuel cut operation in
No. 2 cylinder (if certain level of
misfire malfunction is detected)

-

Cat OT MF F/C

Cylinder #3

Display of fuel cut operation in
No. 3 cylinder (if certain level of
misfire malfunction is detected)

-

Cat OT MF F/C

Cylinder #4

Display of fuel cut operation in
No. 4 cylinder (if certain level of
misfire malfunction is detected)

-

Cat OT MF F/C

Cylinder #5

Display of fuel cut operation in
No. 5 cylinder (if certain level of
misfire malfunction is detected)

-

Cat OT MF F/C

Cylinder #6

Display of fuel cut operation in
No. 6 cylinder (if certain level of
misfire malfunction is detected)

-

Received MIL

from ECT

MIL status

-

Engine Run

Time

Accumulated engine running
time

-

Time after DTC

Cleared

Cumulative time after DTC
cleared

-

Distance from Accumulated distance from DTC

2008 Toyota Tundra

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