Toyota Tundra. Manual — part 1306

Throttle valve fully open 3.2 to 4.8 V

D74-77

(VTA2) - D74-

79 (ETA)

Y - B-Y

Throttle position sensor
(for sensor malfunction
detection)

Ignition switch ON,
Throttle valve fully
closed

2.1 to 3.1 V

Ignition switch ON,

Throttle valve fully open

4.5 to 5.5 V

A24-55 (VPA)

- A24-58 (EPA)

W-O

Accelerator pedal position
sensor (for engine control)

Ignition switch ON,
Accelerator pedal
released

0.5 to 1.1 V

Ignition switch ON,

Accelerator pedal fully

depressed

2.6 to 4.5 V

A24-56 (VPA2)

- A24-60

(EPA2)

LG - BR

Accelerator pedal position
sensor (for sensor
malfunctioning detection)

Ignition switch ON,
Accelerator pedal
released

1.2 to 2.0 V

Ignition switch ON,

Accelerator pedal fully

depressed

3.4 to 5.3 V

A24-57

(VCPA) - A24-

58 (EPA)

B - O

Power source of
accelerator pedal position
sensor (for VPA)

Ignition switch ON

4.5 to 5.5 V

A24-59 (VCP2)

- A24-60

(EPA2)

V - BR

Power source of
accelerator pedal position
sensor (for VPA2)

Ignition switch ON

4.5 to 5.5 V

D74-22

(HA1A) - D74-

23 (E04)

D74-20

(HA2A) - D74-

21 (E05)

L - W-B

G - W-B

A/F sensor heater

Idling

Below 3.0 V

Ignition switch ON

11 to 14 V

D74-126

(A1A+) - D74-

81 (E1)

G - BR

A/F sensor

Ignition switch ON

3.3 V*

D74-125 (A1A-

) - D74-81 (E1)

R - BR

A/F sensor

Ignition switch ON

2.9 V*

D74-103

(A2A+) - D74-

81 (E1)

P - BR

A/F sensor

Ignition switch ON

3.3 V*

D74-102 (A2A-

) - D74-81 (E1)

L - BR

A/F sensor

Ignition switch ON

2.9 V*

D74-45 (HT1B)

- D74-46 (E03)

D74-44 (HT2B)

- D74-46 (E03)

G-B - W-B

B - W-B

Heated oxygen sensor
heater

Idling

Below 3.0 V

Ignition switch ON

11 to 14V

D74-114

2008 Toyota Tundra

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

(OX1B) - D74-

115 (EX1B)

D74-112

(OX2B) - D74-

113 (EX2B)

W - BR

B - BR

Heated oxygen sensor

Engine speed maintained
at 2500 RPM for 2
minutes after warming
up sensor

Pulse generation

(See b,

waveform 2)

D74-86 (#10) -

D74-43

(E01) R-L

- W-B

Injector

Ignition switch ON

11 to 14 V

D74-109 (#20)

- D74-43 (E01)

L-W-B

D74-85 (#30) -

D74-43 (E01)

R - W-B

D74-108 (#40)

- D74-43 (E01)

Y - W-B

D74-84 (#50) -

D74-43 (E01)

G - W-B

Idling

Pulse generation

(See c,

waveform 3)

D74-107 (#60)

- D74-43 (E01)

R - W-B

D74-83 (#70) -

D74-43 (E01)

W - W-B

D74-106 (#80)

- D74-43 (E01)

R-B - W-B

D74-94

(KNK1) - D74-

93 (EKNK)

D74-117

(KNK2) - D74-

116 (EKN2)

G - R

W - B

Knock sensor

Engine speed maintained
at 4000 RPM after
warming up engine

Pulse generation

(See d,

waveform 4)

D74-92 (VV1+)

- D74-91

(VV1-)

R-G

Variable valve timing
(VVT) sensor (Intake side
(for bank 1))

Idling

Pulse generation

(See e,

waveform 5)

D74-87 (VV2+)

- D74-88

(VV2-)

R - W

Variable valve timing
(VVT) sensor (Intake side
(for bank 2))

Idling

Pulse generation

(See e,

waveform 5)

D74-110 (NE+)
- D74-111 (NE-

)

L - G

Crankshaft position sensor Idling

Pulse generation

(See e,

waveform 5)

D74-40 (IGT1)

- D74-81 (E1)

B-Y - BR

Ignition coil (ignition

Idling

Pulse generation

(See f,

D74-33 (IGT2)

- D74-81 (E1)

L-Y - BR

D74-37 (IGT3)

- D74-81 (E1)

B - BR

D74-38 (IGT4)

- D74-81 (E1)

L-B - BR

2008 Toyota Tundra

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

D74-35 (IGT5)

- D74-81 (E1)

G-R - BR

signal)

waveform 6)

D74-36 (IGT6)

- D74-81 (E1)

G - BR

D74-34 (IGT7)

- D74-81 (E1)

G-W - BR

D74-39 (IGT8)

- D74-81 (E1)

G-B - BR

D74-104

(IGF1) - D74-

81 (E1)

G-B - BR

Ignition coil (ignition
confirmation signal)

Ignition switch ON

4.5 to 5.5 V

Idling

Pulse generation
(See f,
waveform 6)

D74-105

(IGF2) - D74-

81 (E1)

R - BR

Ignition coil (ignition
confirmation signal)

Ignition switch ON

4.5 to 5.5 V

Idling

Pulse generation
(See f,
waveform 6)

D74-63 (PRG)

- D74-81 (E1)

L-B - BR Purge VSV

Ignition switch ON

11 to 14 V

Idling

Pulse generation
(See g,
waveform 7)

A24-13 (SPD) -

D74-81 (E1)

B - BR

Speed signal from
combination meter

Driving at 20 km/h (12
mph)

Pulse generation

(See h,

waveform 8)

A24-46 (STA) -

D74-81 (E1)

R - BR

Starter signal

Cranking

5.5 V or higher

D74-120

(NSW) - D74-

81 (E1)

L - BR

Park/neutral position
switch

Ignition switch ON, Shift
lever position other than
P and N

11 to 14 V

Ignition switch ON, Shift

lever position in P or N

Below 3.0 V

A24-36 (STP) -

D74-81 (E1)

LG - BR Stop light switch

Brake pedal depressed

7.5 to 14 V

Brake pedal released

Below 1.5 V

A24-35 (ST1-)

- D74-81 (E1)

R - BR

Stop light switch (opposite
to STP terminal)

Ignition switch ON,
Brake pedal depressed

Below 1.5 V

Ignition switch ON,

Brake pedal released

7.5 to 14 V

D74-19 (M+) -

D74-82 (ME01)

R - W-B Throttle actuator

Idling with warm engine

Pulse generation

(See i,

waveform 9)

D74-18 (M-) -

D74-82 (ME01)

G - W-B Throttle actuator

Idling with warm engine

Pulse generation

(See j,

waveform 10)

A24-48 (FC) -

D74-81 (E1)

L - BR

Fuel pump control

Ignition switch ON

11 to 14 V

2008 Toyota Tundra

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

A24-52 (FPC) -

D74-81 (E1)

O - BR

Fuel pump control

Ignition switch ON

Below 1.5 V

A24-24 (W) -

D74-81 (E1)

P - BR

MIL

Ignition switch ON

Below 3.0 V

Idling

11 to 14 V

A24-16 (TC) -

D74-81 (E1)

R - BR

Terminal TC of DLC3

Ignition switch ON

11 to 14 V

A24-15

(TACH) - D74-

81 (E1)

W - BR Engine speed

Idling

Pulse generation

(See k,

waveform 11)

A24-30

(VPMP) - D74-

81 (E1)

V - BR

Vent valve (built into
canister pump module)

Ignition switch ON

11 to 14 V

A24-49

(MPMP) - D74-

81 (E1)

G - BR

Leak detection pump
(built into canister pump
module)

Leak detection pump
OFF

Below 3.0 V

Leak detection pump ON 11 to 14 V

D74-66 (VC) -

D74-97

(ETHW)

L - BR

Power source for sensor
(specific voltage)

Ignition switch ON

4.5 to 5.5 V

D74-121

(PPMP) - D74-

97 (ETHW)

P - BR

Canister pressure sensor
(built into canister pump
module)

Ignition switch ON

3.3 to 4.0 V

D74-32 (ALT)

- D74-81 (E1)

R - BR

Generator

Ignition switch ON

11 to 14 V

A24-10

(CANH) - D74-

81 (E1)

GR - BR CAN communication line Ignition switch ON

Pulse generation

(See l,

waveform 12)

A24-11

(CANL) - D74-

81 (E1)

W - BR CAN communication line Ignition switch ON

Pulse generation

(See m,

waveform 13)

D74-62 (ACIS)

- D74-81 (E1)

R-W - BR

VSV for ACIS (Acoustic
Control Induction System)
operation signal

Ignition switch ON

11 to 14 V

D74-28 (AIRV)

- D74-81 (E1)

BR - BR

Air switching valve for
secondary air injection
system

Ignition switch ON

11 to 14 V

D74-54 (AIRP)

- D74-81 (E1)

P - BR

Air pump control

Ignition switch ON

11 to 14 V

D74-30 (AIDI)

- D74-81 (E1)

G - BR

Diagnostic information
signal for air injection
system

Air injection system
operates

Pulse generation

(See o,

waveform 15)

A24-54 (AIP) -

D74-98

(ETHA)

Y - BR

Secondary air injection
system pressure signal

Ignition switch ON

3.0 to 3.6 V

A24-43

(ARV2) - D74-

V - BR

Air switching valve for
secondary air injection

Ignition switch ON

11 to 14 V

2008 Toyota Tundra

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