V

Celica 1985 Fusible Link

Trouble

Terminals

Condition

STD Voltage

No voltage

Ignition switch ON

Solenoid Resistor

Fusible Link

Igniter

Ignition S/W

Fusible Link

Injector

Battery

® There is no voltage between ECU terminal No. 10 and/or No. 20 and Eoi or E02. (IG S/W ON)

(2) Check that there is specified voltage between resistor terminal (♦) and body ground. STD voltage: 10 - 13V

Check fuse, fusible link and ignition switch.

Repair or replace

Check main relay No. 2

Replace

Voltmeter

Solenoid Resistor

Check wiring between resistor and battery.

Repair or replace

(2) Check that there is specified voltage between resistor terminal (-) and body ground. STD voltage: 10 — 13V

CD Check resistance of magnetic coil in the each injector. STD resistance: 1.5 - 3.00

Replace resistor

Check wiring between ECU and injector.

Replace injector.

Try another ECU

Repair or replace

Voltmeter

Voltmeter

Ohmmeter

Ohmmeter

Terminals

Trouble

Condition

STO Voltage

No voltage

Cranking or Idling

Fusible Link rCF^fi-

Igniter w/ Ignition Coil

Fusible Link

IG/SW

Tachometer

Fusible Link

Battery

(i) There is no voltage between ECU terminal M3t and Ei (Idling)

Voltmeter

(2) Check that there is voltage between ECU terminal IG S/W and body ground. (Idling)

Check wiring between ECU terminal Ei and body ground.

Voltmeter

Repair or replace

Refer to No. 1

Check fuse and wiring harness

Repair or replace

Check wiring between ECU and distributor.

Repair or replace

Replace

Check distributor

Check wiring between ECU and igniter.

Repair or replace

Check igniter

Repair or replace

Try another ECU

No.

Terminal

Trouble

Condition

STD Voltage

8

ISC1-ISC4 - Ei

No voltage

Ignition switch ON

9 - 14V

(T) There is no voltage between ECU terminals ISC i - ISC4 and Ei. (IQ S/W ON)

(D Check that there is voltage between ECU terminal +B and body ground. <IG S/W ON)

Check wiring between computer terminal Ei and body ground.

Try another ECU.

Repair or replace

Refer to No. 1.

NO

Repair or replace

|OK

Check wiring between NO. 1 main

BAD

Repair or replace

relay and battery.

(D Check ISC valve.

Voltmeter

FUEL SYSTEM Fuel Pump

Bearing

Armature

Magnet

Impeller

INLET

OUTLET

Check Valve

Relief Valve

Bearing

Fuse (15A)

I Battery

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