Voltage at ECU Wiring Connectors

No.

Terminals

Condition

STD voltage (V)

See page

1

IG SW ON

10-14

FI-70

2

BATT - E1

10-14

FI-71

3

IDL- E2

IG SW ON

Throttle valve open

8-14

FI-72

VC - E2

4.5 - 5.5

VTA - E2

Throttle valve fully closed / Throttle opener must be \ \ cancelled first /

0.8-1.2

Throttle valve fully open

3.2 - 4.2

4

PIM - E2

IG SW ON

3.3 - 3.9

FI-74

VC - E2

4.5 - 5.5

5

No.10 E01 No.20 E02

10-14

FI-75

6

THA - E2

IG SW ON

Intake air temp. 20°C (68°F)

1.7-3.1

FI-76

7

THW - E2

Coolant temp. 80°C (176°F)

0.3 - 0.8

FI-77

8

STA - E1

Cranking

6-14

FI-78

9

IGT - E1

Cranking or idling

0.8-1.2

FI-79

ISCO

IG SW ON

8-14

FI-80

11

W- E1

No trouble ("CHECK" engine warning light off) and engine running

10-14

FI-81

12

A/C - E1

IG SW ON

Air conditioning ON

8-14

FI-82

Engine & EOT ECU Terminals

u U W ----uu

U IF "U

UU "HP-UU

E01

Z"-

No. 20

ISCO

ISCC

FPU

STJ

S1

S2

SL

IGF

NE

VF

DG

0X1

THW

THA

PIM

VC

STA

A/C

SPD

PS

OD2

PSCT

w

B/K

/

ELS

BATT

E02

EGR

IGT

L

2

SP2

E21

G1

E1

T

0X2

IDL

VTA

THG

E2

NSW

ACT

OD1

/

FC

+ B

+ B1

Trouble

Condition

STD voltage

No voltage

IG SW ON

10-14V

FL MAIN 2

Battery

Ignition Switch AM2

Engine & ECT ECU

Engine & ECT ECU

Nonwoven Process2015 Corolla Cruise Control EcuSw20 Ignition WiringRelocate Battery Mr2 Sw20Efi Fuse Breaking 3vze

Terminals

Trouble

Condition

STD voltage

No voltage

10-14 V

Engine & ECT ECU

Battery

Battery

Engine & ECT ECU

Innebandyplan

fi5738

Stunner DiagramRelocate Battery Mr2 Sw20Tongue And Groove Detail

No.

Terminals

Trouble

Condition

STD Voltage

IDL - E2

Throttle valve open

8-14 V

VC - E2

-

4.5 - 5.5 V

3

VTA - E2

No voltage

IG SW ON

Throttle valve fully closed /Throttle opener must be\ \cancelled first J

0.8-1.2 V

Throttle valve fully open

3.2 - 4.2 V

Engine & ECT ECU

Engine & ECT ECU

Train Yard Maps SchematicRelocate Battery Mr2 Sw20
• IDL - E2
Paradoxe Simpson Exemple
OK

Try another ECU.

2009 Rx350 Vvt Wire Plug
• VC - E2
Cisco Pwr 2kw Connectors
• VTA - E2
OK

Try another ECU.

Utility Secondary System Sketch

Condition

STD voltage

IG SW ON

Engine & ECT ECU

Engine & ECT ECU

Terminals

Trouble

No voltage

Vacuum Sensor Manifold Absolute Pressure Sensor

fi5128
• PIM - E2, VC - E2

Terminals

Trouble

Condition

STD voltage

No.10 E01 No.20 E02

No voltage

IG SW ON

10-14 V

Ignition Switch AM2

Engine & ECT ECU

Engine & ECT ECU

Massey Ferguson Industrial Parts2018 Mustang ImrcToyota Fuel Pump Wiring Terminal EndsNon Profit Organization

Terminals

Trouble

Condition

STD voltage

No voltage

IG SW ON

Intake air temperature 20°C (68°F)

Intake Air Temp. Sensor THA

4 THA

fi3572

Voltmeter

Voltmeter

Voltmeter

Voltmeter

Pressure Tha BodySailboat Boom Hardware

✓jn There is no voltage between ECU terminals THA and E2. ^ (IG SW ON)

Check that there is voltage between ECU terminal +B or +B1 and body ground. (IG SW ON)

Check wiring between ECU terminal E1 and body ground.

Check intake air temp, sensor. (See page FI-169)

Replace intake air temp, sensor.

Repair or replace.

Check wiring between ECU and intake air temp, sensor.

Try another ECU.

Repair or replace.

Terminals

Trouble

Condition

STD voltage

No voltage

IG SW ON

Coolant temperature 80°C (176°F)

Water Temp. Sensor

LPvwH

Engine & ECT ECU

fi3572

Carina Water Temp Sensor 3sfeRelocate Battery Mr2 Sw20Main Ground Toyota Carina

Terminals

Trouble

Condition

STD voltage

No voltage

Cranking

Ignition Switch AM2

[ST2

MAIN 2.0L

Battery

Starter vS"

Neutral

Start

Switch

Starter Relay

Starter Relay

Engine & ECT ECU

Engine & ECT ECU

fi5736

Relocate Battery Mr2 Sw20Relocate Battery Mr2 Sw20Relocate Battery Mr2 Sw20
OK

Terminals

Trouble

Condition

STD voltage

No voltage

Idling

Ignition Switch AM2,

Battery

Battery

1991 Toyota Mr2 Parts Diagram

Ignition Coil

Igniter

Engine & ECT ECU To Tachometer

Igniter

fi5740

Toyota Terminal Repair 82998 24420
fi2770
Toyota Terminal Repair 82998 24420
OK

Try another ECU.

Toyota Ecu Teminal

Terminals

Trouble

Condition

STD voltage

ISCC ISCO

No voltage

IG SW ON

Ignition Switch AM2

Engine & ECT ECU

Battery

Engine & ECT ECU

Battery

fi5741

Ford Points Distributor WiringToyota Ecu Teminal

Terminals

Trouble

Condition

STD voltage

No voltage

No trouble ("CHECK" engine warning light off) and engine running.

10-14 V

To Ignition Switch (1G1)-

Fuse

GAUGE

7.5A

"CHECK" Engine Warning Light

"CHECK" Engine Warning Light

Combination Meter

Engine & ECT ECU

Engine & ECT ECU

Relocate Battery Mr2 Sw20

Voltmeter

Voltmeter

There is no voltage between ECU terminals W and E1. ^ (Idling)

Check that there is voltage between ECU terminal W and body ground.

Check wiring between ECU terminal E1 and body ground.

Try another ECU.

Repair or replace.

Check fuse GAUGE (7.5A) and check engine warning light.

Repair or replace.

Fuse blows again.

Check wiring between ECU terminal W and fuse.

Repair or replace.

Terminals

Trouble

Condition

STD voltage

No voltage

Air conditioning ON

Engine & ECT ECU

To A/C Amplifier.

A/C Compressor

Engine & ECT ECU

fi0922

Toyota VoltageToyota VoltageToyota VoltageToyota Voltage
Check Connector
Toyota Terminal Repair 82998 24420

Voltmeter

Check Connector

Check Connector E1 TE1 VF1

Voltmeter fi3575

Voltmeter
Toyota Voltage

® There is no voltage between ECU terminal VF and E1.

® There is no voltage between ECU terminal VF and E1.

Check that there is voltage between ECU terminal VF and body ground.

OK

r OK

Check wiring between ECU terminal E1 and body ground.

, OK v BAD

Try another ECU.

Repair or replace.

BAD

Is air leaking into air induction system?

Repair air leak.

Check spark plugs. (See page IG-11)

Repair or replace.

, OK

BAD

Check distributor and ignition system. (See page IG-4)

Repair or replace.

Check fuel pressure.(See page Fl-87)

Repair or replace.

Check fuel pressure.(See page Fl-87)

Repair or replace.

I OK

BAD

Check injections. (See page FI-120)

Repair or replace.

, OK

BAD

* Check cold start injector.

Repair or replace.

(See page FI-102)

f 0K

BAD

Check vacuum sensor (See page FI-131)

Repair or replace.

r OK

/ss Check operation of oxygen sensor(s).

BAD

System normal

w (See pages FI-173 and 175)

, BAD

BAD

Check wiring between oxygen sensor(s)

Repair wiring.

and ECU.

r 0K

Replace oxygen sensor(s).

* Rich malfunction only

CALIF, only

EGR Valve

EGR Gas Temp. Sensor

Engine & ECT ECU

fi2680

Toyota Carina Egr VoztuvasAw11 Oxygen SensorRelocate Battery Mr2 Sw20

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