Fig Identifying ECM Terminals

HINT:

The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

VOLTAGE SPECIFICATION CH

[ART

Symbols (Terminal No.)

Wiring Color

Condition

STD Voltage

BATT (E4-3) - E1 (E6-1)

B-Y - BR

Always

9 to 14 V

+BM (E4-7) - E1 (E6-1)

W-G - BR

IGSW (E4-9) - E1 (E6-1)

B-O - BR

Ignition switch ON

9 to 14 V

+B (E4-1) - E1 (E6-1)

B-R - BR

+B2 (E4-2) - E1 (E6-1)

B-R - BR

MREL (E4-8) - E1 (E6-1)

B-W - BR

Ignition switch ON

9 to 14 V

VC (E8-23) - E2 (E8-28)

G-B - G-W

Ignition switch ON

4.5 to 5.5 V

VG (E8-30) - E2G (E8-

R-W - B-

Idling, P or N position, A/C switch

2007 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Sequoia

29)

W

OFF

0.5 to 3.0 V

THA (E8-22) - E2 (E8-28)

Y-G - G-W

Idling, intake air temp. 20°C (68°F)

0.5 to 3.4 V

THW (E8-21) - E2 (E8-28)

G-Y - G-W

Idling, Engine coolant temp. 80°C (176°F)

0.2 to 1.0 V

VTA1 (E8-20) - E2

B-Y - G-W

Ignition switch ON, Accelerator pedal released

0.5 to 1.2 V

(E8-28)

Ignition switch ON, Accelerator pedal depressed

3.2 to 4.8 V

VTA2 (E8-19) - E2

P-L - G-W

Ignition switch ON, Accelerator pedal released

2.0 to 3.1 V

(E8-28)

Ignition switch ON, Accelerator pedal depressed

4.7 to 5.1 V

VPA (E4-18) - E2 (E8-

G-R - G-W

Ignition switch ON, Accelerator pedal released

0.3 to 0.9 V

28)

Ignition switch ON, Accelerator pedal depressed

3.2 to 4.8 V

VPA2 (E4-19) - E2

L-Y - G-W

Ignition switch ON, Accelerator pedal released

1.8 to 2.7 V

(E8-28)

Ignition switch ON, Accelerator pedal depressed

4.7 to 5.1 V

VCPA (E4-26) - EPA (E4-20)

G-B - G-W

Ignition switch ON

4.5 to 5.5 V

VCP2 (E4-27) - EPA2 (E4-21)

L-R - L-B

Ignition switch ON

4.5 to 5.5 V

#10 (E6-2) - E01 (E8-7)

R - W-B

Ignition switch ON

9 to 14 V

#20 (E6-3) - E01 (E8-7)

W - W-B

#30 (E6-4) - E01 (E8-7)

G - W-B

#40 (E6-5) - E01 (E8-7)

R-B - W-B

#60 (E6-7) - E01 (E8-7)

L - W-B Y - W-B

Idling

Pulse generation (see WAVEFORM 1)

#70 (E8-3) - E01 (E8-7)

L-R - W-B

#80 (E8-2) - E01 (E8-7)

R-W - W-B

KNK1 (E7-29) EKNK (E7-28)

G-R

Maintain engine speed at 4,000 rpm

Pulse generation (see

KNK2 (E7-21) EKN2

W - B

after warming up

WAVEFORM 2)

2007 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Sequoia

(E7-20)

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)

G - R

Idling

Pulse generation (see WAVEFORM 5)

PRG (E8-34) - E1 (E6-1)

W-G - BR

Ignition switch ON

9 to 14 V

SPD (E5-8) - E1 (E6-1)

G-O - BR

Ignition 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

Ignition switch ON

0 to 3.0 V

FC(E4-10) - E1 (E6-1)

G-O - BR

Ignition switch ON

9 to 14 V

IGT1 (E8-8) - E1 (E6-1)

B-L - BR

IGT3 (E8-11) - E1 (E6-1)

LG-B - BR

G-B - BR

IGT8 (E8-9) - E1 (E6-1)

R-W - BR G-W - BR

Idling

Pulse generation (see WAVEFORM 9)

P-L - BR

G-R - BR

LG - BR

IGF2 (E8-25) - E1 (E6-1)

B-R - BR B-W - BR

Ignition switch ON

4.5 to 5.5 V

Idling

Pulse generation (see WAVEFORM 9)

2007 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Sequoia

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

HA2A (E7-1) - E1 (E6-1)

L - BR L-R - BR

Idling

Below 3.0 V

Ignition switch ON

9 to 14 V

HT2B (E7-5) - E1 (E6-1)

W-R - BR Y - BR

Idling

Below 3.0 V

Ignition switch ON

9 to 14 V

OX1B (E8-18) - E2 (E8-28)

G - G-W

Idling

Pulse generation (see WAVEFORM 10)

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

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

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

Ignition switch ON, Other shift position in P, N

9 to 14 V

Ignition switch ON, shift position in

P, N

0 to 3.0 V

W (E5-30) - E1 (E6-1)

V-W - BR

Idling

9 to 14V

Ignition switch ON

Below 3.0 V

TACH(E5-1) - E1 (6-1)

Y-G - BR

Idling

Pulse generation (see WAVEFORM 11)

ACIS (E8-33) - E1 (E6-1)

B-L - BR

Ignition switch ON

9 to 14 V

VPMP (E4-5) - E1 (E6-1)

P-L - BR

Ignition switch ON

9 to 14 V

MPMP (E4-6) - E1 (E6-1)

9 to 14 V

PPMP (E4-22) - E1

2007 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Sequoia

(E6-1)

R-G - BR

Ignition switch ON

3 to 3.6 V

AIV1 (E8-27) - E1 (E6-1)

L-B - BR

Shift lever position P or N, Ignition switch START

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

Air switching valve for secondary air injection system

9 to 14 V

AIRP (E4-25) - E1 (E6-1)

G-W - BR

Air pump control

9 to 14 V

AIP (E8-32) - E1 (E6-1)

B-Y - BR

Ignition switch ON

3 to 3.6 V

HINT:

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

1. WAVEFORM 1 Fuel injector

WAVEFORM REFERENCE CHART

ECM Terminal Names

Between #10 (to #80) and E01

Tester Range

20 V/DIV., 20 msec./DIV.

Condition

The wavelength becomes shorter as engine rpm increases. 20 WD!V.

Gnouncf <

The wavelength becomes shorter as engine rpm increases. 20 WD!V.

Gnouncf <

"T

J j

J

flOMii K«

Fig. 15: Fuel Injector Waveform Graph 2. WAVEFORM 2 Knock sensor

WAVEFORM REFERENCE CHART

ECM Terminal Name

Between KNK1 and EKNK

2007 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Sequoia

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:

HINT:

• The wavelength becomes shorter as engine rpm increases.

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

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MHXWEID

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