Www Toyota Mctars Toyota Celica Manual

Www Toyota Mctars

Fri, 11 Mar 2011 06:03:15 | Toyota Celica Manual

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I There is no voltage between ECU terminals No.10 and/or No.20 and E01 and/or E02. (IG SW ON)

: Check that there is voltage between ECU terminal No.10 and/or No.20 and body ground.

No.	Terminals	Trouble	Condition		STD voltage
fi	THA - E1	No voltage	IG SW ON	intake air temperature 20°C (68°F)	1.9 - 2.3 V

lntH¡ía Air Tamp. Sensor THA

: engicv & ect tCU

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Terminals

Trouble

No voltage

Condition

IG SW ON Coolant temperature 80°C (176°F)

STD voltage

Ytorar Tflínp. Sensor

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No.	Terminals	Trouble	Condition	STD voltage
a	STA - Ë1	No voltage	Cranking	0- 14 V

Engin* & ECT ECU

: OK

No.	Terminals	Trouble	Condition	STD voltage
9	IGT - El	No voltage	Idling	M-uv

tnyiiifr Sl ECT ECU

Lgrriiion Switch

Banery tnyiiifr Sl ECT ECU

Lgrriiion Switch

Banery

No.	Terminals	Trouble		Condition	STD voltage
10	Í5CC ISCO	No voltage		iG SW ON	B-UV

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No.	Terminals	Trouble	Condition	STD voltage
11	W-È1	No voltage	No trouble ("CHECK" engine warning light off) and engine running.	10 - 14 V

To IgniliOrt Switch

GAUGE

'CHECK' Ennirw Waming Light

Combination Mctar

Engirt* ft ECT ECU

: VJ

No.

Terminal

Trouble

Condition

STD voltage

A/C - £1

No voltage

Air conditioning ON

: A/C Compressor

4 ECT ECU

: Check CûnnecTor

(1) There is no voltage between ECU terminals VF and E1.

Cluck Connecior E1 TE VF1

: Voltmarer

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

Check wiring between ECU terminal E1 and body ground.

		OK		BAD
		Try another ECU. Repair or replace.
			YES
Is air leaking into air induction system?				Repair air leak.

	NO		BAD
Check spark plugs. (See page IG-16)				Repair or replace.
			L
	OK
Check distributor and ignition system.			BAD	Repair or replace.
(See page IG-4)
	OK		BAD
Check fuel pressure. (See page FI-108)				Repair or replace.

	ok		BAD
Check injectors. (See page FI-152)				Repair or replace.
f ok
* Check cold start injector.			BAD	Repair or replace.
(See page FI-129)
, ok			BAD
Check vacuum sensor. (See page FI—211)				Repair or replace.
	Ok		BAD
(2)Check operation of oxygen sensors.				System Normal
(See pages FI-214 and 216)
	BAD		BAD
Check wiring between oxygen sensor and				Repair wiring.
ECU.
	OK		*	Rich malfunction only
Replace oxygen sensors.			Eigine & EGT ECU FI-12