Toyota Sequoia (2005). Manual - part 58

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DIAGNOSTICS

ENGINE

DI–35

229

#10 (E6–2) – E01 (E8–7)

#20 (E6–3) – E01 (E8–7)

#30 (E6–4) – E01 (E8–7)

#40 (E6 5)

E01 (E8 7)

R – W–B

W – W–B

G – W–B

R B

W B

IG switch ON

9 to 14 V

#40 (E6–5) – E01 (E8–7)

#50 (E6–6) – E01 (E8–7)

#60 (E6–7) – E01 (E8–7)

#70 (E8–3) – E01 (E8–7)

#80 (E8–2) – E01 (E8–7)

R–B – W–B

L – W–B

Y – W–B

L–R – W–B

R–W – W–B

Idling

Pulse generation

(See waveform 1)

KNK1 (E7–29) – EKNK (E7–28)

G – R

M i t i

i

d t 4 000

ft

i

Pulse generation

KNK2 (E7–21) – EKN2 (E7–20)

W – B

Maintain engine speed at 4,000 rpm after warming up

Pulse generation

(See waveform 2)

OC1+ (E6–17) – OC1– (E6–16)

L–W – P–L

Accelerate slowly after engine warmed–up

Pulse generation

(See waveform 3)

OC2+ (E6–15) – OC2– (E6–14)

L–B – R–L

Accelerate slowly after engine warmed–up

Pulse generation

(See waveform 3)

VV1+ (E6–25) – VV1– (E6–24)

R – W

Idling

Pulse generation

(See waveform 4)

VV2+ (E6–18) – VV2– (E6–28)

G – R

Idling

Pulse generation

(See waveform 4)

G2+ (E6–19) – G2– (E6–29)

Y – L

Idling

Pulse generation

(See waveform 5)

NE+ (E6–21) – NE– (E6–20)

R – G

Idling

Pulse generation

(See waveform 5)

PRG (E8–34) – E1 (E6–1)

W–G – BR

IG switch ON

9 to 14 V

SPD (E5–8) – E1 (E6–1)

G–O – BR

IG switch ON, Rotate driving wheel slowly

Pulse generation

(See waveform 6)

M+ (E8–5) – E1 (E6–1)

V – BR

Idling

Pulse generation

(See waveform 7)

M– (E8–4) – E1 (E6–1)

P – BR

Idling

Pulse generation

(See waveform 8)

FPR (E6–30) – E1 (E6–1)

V – BR

IG switch ON

0 to 3.0 V

FC (E4–10) – E1 (E6–1)

G–O – BR

IG switch ON

9 to 14 V

IGT1 (E8–8) – E1 (E6–1)

IGT2 (E8–15) – E1 (E6–1)

IGT3 (E8–11) – E1 (E6–1)

IGT4 (E8–10) – E1 (E6–1)

IGT5 (E8–13) – E1 (E6–1)

IGT6 (E8–12) – E1 (E6–1)

IGT7 (E8–14) – E1 (E6–1)

IGT8 (E8–9) – E1 (E6–1)

B–L – BR

LG–B – BR

G–B – BR

R–W – BR

G–W – BR

P–L – BR

G–R – BR

LG – BR

Idling

Pulse generation

(See waveform 9)

IGF1 (E8 24)

E1 (E6 1)

B R

BR

IG switch ON

4.5 to 5.5 V

IGF1 (E8–24) – E1 (E6–1)

IGF2 (E8–25) – E1 (E6–1)

B–R – BR

B–W – BR

Idling

Pulse generation

(See waveform 9)

A1A+ (E7–22) – E1 (E6–1)

G – BR

Always (Ignition switch ON)

3.3 V*

1

A1A– (E7–30) – E1 (E6–1)

R – BR

Always (Ignition switch ON)

3.0 V*

1

A2A+ (E7–23) – E1 (E6–1)

W – BR

Always (Ignition switch ON)

3.3 V*

1

A2A– (E7–31) – E1 (E6–1)

B – BR

Always (Ignition switch ON)

3.0 V*

1

HT1B (E8–1) – E1 (E6–1)

W–R – BR

Idling

Below 3.0 V

HT1B (E8 1)   E1 (E6 1)

HT2B (E7–5) – E1 (E6–1)

W R  BR

Y – BR

IG switch ON

9 to 14 V

OX1B (E8–18) – E2 (E8–28)

G – G–W

Idling

Pulse generation

(See waveform 10)

A23647

20 msec./DIV

20 V/DIV

Ground

DI–36

–

DIAGNOSTICS

ENGINE

230

OX2B (E7–33) – E2 (E8–28)

R – G–W

Idling

Pulse generation

(See waveform 10)

STP (E4 15)

E1 (E6 1)

G Y

BR

Brake pedal is depressed

7.5 to 14 V

STP (E4–15) – E1 (E6–1)

G–Y – BR

Brake pedal is released

Below 1.5 V

ST1 (E4 16)

E1 (E6 1)

L B

BR

Brake pedal is depressed

Below 1.5 V

ST1– (E4–16) – E1 (E6–1)

L–B – BR

Brake pedal is released

7.5 to 14 V

STA (E6–11) – E1 (E6–1)

B–R – BR

Shift lever position P or N, Ignition switch START

6.0 V or more

STSW (E6–12) – E1 (E6–1)

B – BR

Shift lever position P or N, ignition switch START

6.0 V or more

STAR/NSW (E7 8)

E1 (E6 1)

B

BR

IG switch ON, Other shift position in P, N

9 to 14 V

STAR/NSW (E7–8) – E1 (E6–1)

B – BR

IG switch ON, Shift position in P, N

0 to 3.0 V

W (E5 30)

E1 (E6 1)

V W

BR

Idling

9 to 14 V

W (E5–30) – E1 (E6–1)

V–W – BR

IG switch ON

Below 3.0 V

TACH (E5–1) – E1 (E6–1)

Y–G – BR

Idling

Pulse generation

(See waveform 11)

ACIS (E8–33) – E1 (E6–1)

B–L – BR

IG switch ON

9 to 14 V

VPMP (E4–5) – E1 (E6–1)

P–L – BR

Ignition switch ON

9 V to 14 V

MPMP (E4–6) – E1 (E6–1)

V–G – BR

Vacuum pump OFF

Vacuum pump ON

0 V to 3 V

9 V to 14 V

PPMP (E4–22) – E1 (E6–1)

R–G – BR

Ignition switch ON

3 V to 3.6 V

AIV1 (E8–27) – E1 (E6–1)

L–B – BR

Ignition switch ON

9 to 14 V

AIV2 (E8–26) – E1 (E6–1)

P–L – BR

Ignition switch ON

9 to 14 V

AIRV (E4–4) – E1 (E6–1)

R–W – BR

Ignition switch ON

9 to 14 V

AIRP (E4–25) – E1 (E6–1)

G–W – BR

Ignition switch ON

9 to 14 V

AIP (E8–32) – E1 (E6–1)

B–Y – BR

Ignition switch ON

3 V to 3.6 V

*

1

: The ECM terminal voltage is constant regardless of the output voltage from the sensor.

WAVEFORM 1
Fuel injector

ECM Terminal Names

Between #10 (to 40) and E01

Tester Ranges

20 V/DIV, 20 msec./DIV

Conditions

Idling

HINT:
The wavelength becomes shorter as the engine rpm increases.

A23648

GND

1V/ DIV

KNK1 Signal Waveform

1 msec./ Division

A23649

200 msec./DIV

5 V/DIV

Ground

A

B

A23650

20 msec./DIV

2 V/DIV

(a) Ground

CH1

(b) Ground

CH2

(c) Ground

CH3

–

DIAGNOSTICS

ENGINE

DI–37

231

WAVEFORM 2
Knock sensor

ECM Terminal Name

Between KNK1 and EKNK
Between KNK2 and EKN2

Tester Range

1 V/DIV, 1 msec./DIV

Condition

Maintain engine RPM at 2,000 rpm after engine warmed–up

HINT:

The wavelength becomes shorter as engine rpm in-
creases.

The waveforms and amplitudes displayed differ slightly
depending on the vehicle.

WAVEFORM 3
VVT OCV

ECM Terminal Name

Between OC1+ and OC1–
Between OC2+ and OC2–

Tester Range

0.2 V/DIV, 200 msec./DIV

Condition

Accelerate slowly after engine warmed–up

HINT:
In the DATA LIST, the items VVT OCV DUTY B1 and B2 show
the duty ratio of voltage flowing to the OCV (see illustration on
left).
VVT OCV DUTY B1, B2 = A/B x 100 (%)

WAVEFORM 4
(a)

VVT sensor bank 1

(b)

VVT sensor bank 2

(c)

Crankshaft position sensor

ECM Terminal Name

(a)  Between VV1+ and VV1–
(b)  Between VV2+ and VV2–
(c)  Between NE+ and NE–

Tester Range

2 V/DIV, 20 msec./DIV

Condition

Idle after engine warmed–up

HINT:
The wavelength becomes shorter as the engine rpm increases.

A23651

20 msec./DIV

5 V/DIV

(a)

(b)

Ground

Ground

A23652

10 msec./DIV

1 V/DIV

Ground

A23653

1 msec./DIV

5 V/DIV

Ground

A23654

1 msec./DIV

5 V/DIV

Ground

A23655

(a)

(b)

20 msec./DIV

2 V/DIV

Ground

Ground

DI–38

–

DIAGNOSTICS

ENGINE

232

WAVEFORM 5
(a)

Camshaft position sensor

(b)

Crankshaft position sensor

ECM Terminal Name

(a)  Between G2+ and G2–
(b)  Between NE+ and NE–

Tester Range

5 V/DIV, 20 msec./DIV

Condition

Idle after engine warmed–up

HINT:
The wavelength becomes shorter as the engine rpm increases.

WAVEFORM 6
Vehicle speed signal

ECM Terminal Name

Between SP2+ and SP2–

Tester Range

5 V/DIV, 10 msec./DIV

Condition

Driving by 40 km/h (25 mph)

HINT:
The wavelength becomes shorter as vehicle speed increases.

WAVEFORM 7
Throttle actuator positive terminal

ECM Terminal Name

Between M+ and ME01

Tester Range

5 V/DIV, 1 msec./DIV

Condition

Idle after engine warmed–up

HINT:
The duty ratio varies depending on the throttle opening opera-
tion.

WAVEFORM 8
Throttle actuator negative terminal

ECM Terminal Name

Between M– and ME01

Tester Range

5 V/DIV, 1 msec./DIV

Condition

Idle after engine warmed–up

HINT:
The duty ratio varies depending on the throttle opening opera-
tion.

WAVEFORM 9
(a)

Igniter IGT signal (from ECM to igniter)

(b)

Igniter IGF signal (from igniter to ECM)

ECM Terminal Name

(a)  Between IGT1 (to IGT8) and E1
(b)  Between IGF1 (IGF2) and E1

Tester Range

2 V/DIV, 20 msec./DIV

Condition

Idling

HINT:
The wavelength becomes shorter as vehicle speed increases.