Voltage at ECU Wiring Connectors

No.

Terminal

Condition

STD voltage (V)

See page

+ B1

IG SW ON

10-14

FL-36

2

BATT - E1

-

10-14

FI-37

3

IDL- E2

IG SW ON

Throttle valve open

4-6

FI-38

VC - E2

-

4-6

VTA - E2

Throttle valve fully closed

0.1 - 1.0

Throttle valve fully open

3.2 - 4.2

4

VC - E2

-

4-6

Fl-40

VS E2

Measuring plate fully closed

3.7 - 4.3

Measuring plate fully open

0.2 - 0.5

Idling (No load)

2.6 - 3.6

3,000 rpm (No load)

1.0-2.0

No.2 E01 No.3 ~~ E02 No.4

IG SW ON

10-14

Fl-41

6

THAI - E2

IG SW ON

Intake air temp. 20°C (68°F)

1 -3

FI-42

7

THW - E2

Coolant temp. 80°C (176°F)

0.1 - 1.1

FI-43

8

STA - E1

Cranking

6-14

FI-44

9

IGT - E1

Cranking or idling

0.8-1.2

FI-45

RSO

IG SW ON

8-14

FI-46

11

W- E1

No trouble (check engine warning light off) and engine running

10-14

FI-47

12

PIM - E2

IG SW ON

2.5-4.5

FI-48

VC - E2

4-6

13

AC1 - E1

IG SW ON

Air conditioning ON

8-14

FI-49

Engine ECU Terminals

LTU 4JJ —U

rui

"Li" 4P Lr

uir ----------------v--—Li

rui

E01

No.1

No.2

STJ

rsc

ht

/

tpc 1

igf

g2

NE

vf

0X1

KNK

thw

tha 1

vs

vc

sta|aci

spd

abs

fpr

W

stp

/

els

batt

E02

No.3

No.4

egr

rso

/

igt

tvis

fc

g1

e1

t

0X2

pim

idl

vta

thg

e2

¿A/

/

/

/

ps

psct

+ b

Trouble

Condition

STD voltage

No voltage

IG SW ON

10-14 V

Battery

Battery

Ignition Switch AM2

Engine ECU

Engine ECU

Nonwoven ProcessToyota Voltage

Terminals

Trouble

Condition

STD voltage

No voltage

10-14 V

Engin ECU

Battery

Battery

Engin ECU

FI5738

(D (D There is no voltage between ECU terminals BATT and E1.

Voltmeter

Voltmeter

FI2753

FI2753

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

( Check wiring between ECU terminal E1 and body ground.

Try another ECU.

Repair or replace.

Check fuse and fusible links.

Replace.

Check wiring between ECU terminal and battery.

Repair or replace.

FI2755

Terminals

Trouble

Condition

STD voltage

No voltage

IG SW ON

Throttle valve open

Throttle valve fully closed

Throttle valve fully open

Throttle Position Sensor

Engine ECU

Engine ECU

fl 1366

• IDL - E2
OK
OK

Try another ECU.

• VC - E2

FI2764

FI2764

Try another ECU.

Try another ECU.

No.

Terminals

Trouble

Condition

STD voltage

VC-E2

-

4-6 V

IG SW ON

Measuring plate fully closed

3.7 - 4.3 V

4

VS - E2

No voltage

Measuring plate fully open

0.2 - 0.5 V

Idling (No load)

2.6 -3.6 V

3,000 rpm (No load)

Engine ECU

Air Flow Meter

VS VC

FM 269

Terminals

Trouble

Condition

STD voltage

No voltage

IG SW ON

10-14 V

Ignition Switch AM2

Injector i + B

Engine ECU

Injector

No.10

No.20

ifflfli

No.30

No.40

Toyota Mr2 Wiring

Terminals

Trouble

Condition

STD voltage

No voltage

IG SW ON

Intake air temperature 20°C (68°F)

Engine ECU

Engine ECU

Intake Air Temp. Sensor (Air Flow Meter)

FI1272

Air Flow Meter
Mr2 Turbo Coolant Temp Ecu Wiring

Terminals

Trouble

Condition

STD voltage

No voltage

IG SW ON

Coolant temperature 80°C (176°C)

Water temp. Sensor

Engine ECU r-^

FI3572

1997 Corolla Coolant Temp Sensor

Water Temp. Sensor

FI5618

Water Temp. Sensor

FI5618

Terminals

Trouble

Condition

STD voltage

No voltage

Cranking

Ignition Switch AM2

Fuse AM2 7.5A

MAIN 2.0L

Battery

Starter

Clutch

Start

Switch

Starter Relay

Starter Relay

Engine ECU

Engine ECU

FI5736

Voltmeter (D

OK

Terminals

Trouble

Condition

STD voltage

No voltage

Idling

Ignition Switch

Ignition Switch

Battery

Battery

FL FL

MAIN AM2 2.OL 40A

FL FL

MAIN AM2 2.OL 40A

Ignition

Main

Relay

Ignition

Main

Relay

Ignition Coil

Igniter

Engine ECU

To Tachometer

Igniter

Engine ECU

To Tachometer

Terminals

Trouble

Condition

STD voltage

RSC RSO

No voltage

IG SW ON

Ignition Switch AM2

Battery

Battery

Engine ECU

Engine ECU

FI5741

Ohmmeter

I n I

O:

o

o

o

Toyota Yaris 2002 Warning Lights

Terminals

Trouble

Condition

STD voltage

No voltage

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

10-14 V

Engine ECU

To Ignition Switch (IG1)"

Fuse

GAUGE

7.5A

"CHECK" Engine Warning Light

"CHECK" Engine Warning Light

Combination Meter

Engine ECU

FI0728

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