TROUBLE DIAGNOSES — Contents

EF & EC-32index toc

Self-diagnosis Mode I & II noted as 'Model with catalyzer' variant.

Trouble Diagnoses Contents

Item Number	Symptom	Condition	Page
	How to Perform Trouble Diagnoses for Quick and Accurate Repair		EF & EC-34
	Diagnostic Table		EF & EC-38
1	Impossible to start	no combustion	EF & EC-39
2	Impossible to start	partial combustion	EF & EC-40
3	Impossible to start	partial combustion (not affected by throttle position)	EF & EC-41
4	Impossible to start	partial combustion (throttle position changes combustion quality)	EF & EC-42
5	Hard to start	before warm-up	EF & EC-43
6	Hard to start	after warm-up	EF & EC-44
7	Hard to start	every time	EF & EC-45
8	Hard to start	morning after a rainy day	EF & EC-46
9	Abnormal idling	no fast idle	EF & EC-47
10	Abnormal idling	low idle (after warm-up)	EF & EC-48
11	Abnormal idling	high idle (after warm-up)	EF & EC-49
12	Unstable idling	before warm-up	EF & EC-50
13	Unstable idling	after warm-up	EF & EC-51
14	Poor driveability	stumble (while accelerating)	EF & EC-52
15	Poor driveability	surge (while cruising)	EF & EC-53
16	Poor driveability	lack of power	EF & EC-54
17	Poor driveability	detonation	EF & EC-55
18	Engine stall	during start-up	EF & EC-56
19	Engine stall	while idling	EF & EC-57
20	Engine stall	while accelerating	EF & EC-58
21	Engine stall	while cruising	EF & EC-59
22	Engine stall	while decelerating/just after stopping	EF & EC-60
23	Engine stall	while loading	EF & EC-61
24	Backfire	through the intake	EF & EC-62
25	Backfire	through the exhaust	EF & EC-63
	Self-diagnosis — Description		EF & EC-64
	Self-diagnosis — Mode I & II (Model with catalyzer)		EF & EC-67
	Self-diagnosis — Mode III		EF & EC-68
	Self-diagnosis — Mode IV		EF & EC-73
	Self-diagnosis — Mode V		EF & EC-75
	Diagnostic Procedure		EF & EC-78
	Diagnostic Procedure 1 — POWER SOURCE AND GROUND CIRCUIT FOR E.C.U.		EF & EC-80
	Diagnostic Procedure 2 — CRANK ANGLE SENSOR		EF & EC-82
	Diagnostic Procedure 3 — AIR FLOW METER		EF & EC-84
	Diagnostic Procedure 4 — ENGINE TEMPERATURE SENSOR		EF & EC-86
	Diagnostic Procedure 5 — VEHICLE SPEED SENSOR		EF & EC-88
	Diagnostic Procedure 6 — IGNITION SIGNAL & DETONATION SENSOR		EF & EC-90
	Diagnostic Procedure 7 — IDLE SWITCH		EF & EC-94
	Diagnostic Procedure 8 — EXHAUST GAS SENSOR		EF & EC-96
	Diagnostic Procedure 9 — THROTTLE SENSOR		EF & EC-98
	Diagnostic Procedure 10 — FUEL PUMP		EF & EC-102
	Diagnostic Procedure 11 — START SIGNAL		EF & EC-104

SymptomHow to Perform Trouble Diagnoses for Quick and Accurate Repair

Condition

PageEF & EC-34

SymptomDiagnostic Table

Condition

PageEF & EC-38

SymptomImpossible to start

Conditionno combustion

PageEF & EC-39

SymptomImpossible to start

Conditionpartial combustion

PageEF & EC-40

SymptomImpossible to start

Conditionpartial combustion (not affected by throttle position)

PageEF & EC-41

SymptomImpossible to start

Conditionpartial combustion (throttle position changes combustion quality)

PageEF & EC-42

SymptomHard to start

Conditionbefore warm-up

PageEF & EC-43

SymptomHard to start

Conditionafter warm-up

PageEF & EC-44

SymptomHard to start

Conditionevery time

PageEF & EC-45

SymptomHard to start

Conditionmorning after a rainy day

PageEF & EC-46

SymptomAbnormal idling

Conditionno fast idle

PageEF & EC-47

SymptomAbnormal idling

Conditionlow idle (after warm-up)

PageEF & EC-48

SymptomAbnormal idling

Conditionhigh idle (after warm-up)

PageEF & EC-49

SymptomUnstable idling

Conditionbefore warm-up

PageEF & EC-50

SymptomUnstable idling

Conditionafter warm-up

PageEF & EC-51

SymptomPoor driveability

Conditionstumble (while accelerating)

PageEF & EC-52

SymptomPoor driveability

Conditionsurge (while cruising)

PageEF & EC-53

SymptomPoor driveability

Conditionlack of power

PageEF & EC-54

SymptomPoor driveability

Conditiondetonation

PageEF & EC-55

SymptomEngine stall

Conditionduring start-up

PageEF & EC-56

SymptomEngine stall

Conditionwhile idling

PageEF & EC-57

SymptomEngine stall

Conditionwhile accelerating

PageEF & EC-58

SymptomEngine stall

Conditionwhile cruising

PageEF & EC-59

SymptomEngine stall

Conditionwhile decelerating/just after stopping

PageEF & EC-60

SymptomEngine stall

Conditionwhile loading

PageEF & EC-61

SymptomBackfire

Conditionthrough the intake

PageEF & EC-62

SymptomBackfire

Conditionthrough the exhaust

PageEF & EC-63

SymptomSelf-diagnosis — Description

Condition

PageEF & EC-64

SymptomSelf-diagnosis — Mode I & II (Model with catalyzer)

Condition

PageEF & EC-67

SymptomSelf-diagnosis — Mode III

Condition

PageEF & EC-68

SymptomSelf-diagnosis — Mode IV

Condition

PageEF & EC-73

SymptomSelf-diagnosis — Mode V

Condition

PageEF & EC-75

SymptomDiagnostic Procedure

Condition

PageEF & EC-78

SymptomDiagnostic Procedure 1 — POWER SOURCE AND GROUND CIRCUIT FOR E.C.U.

Condition

PageEF & EC-80

SymptomDiagnostic Procedure 2 — CRANK ANGLE SENSOR

Condition

PageEF & EC-82

SymptomDiagnostic Procedure 3 — AIR FLOW METER

Condition

PageEF & EC-84

SymptomDiagnostic Procedure 4 — ENGINE TEMPERATURE SENSOR

Condition

PageEF & EC-86

SymptomDiagnostic Procedure 5 — VEHICLE SPEED SENSOR

Condition

PageEF & EC-88

SymptomDiagnostic Procedure 6 — IGNITION SIGNAL & DETONATION SENSOR

Condition

PageEF & EC-90

SymptomDiagnostic Procedure 7 — IDLE SWITCH

Condition

PageEF & EC-94

SymptomDiagnostic Procedure 8 — EXHAUST GAS SENSOR

Condition

PageEF & EC-96

SymptomDiagnostic Procedure 9 — THROTTLE SENSOR

Condition

PageEF & EC-98

SymptomDiagnostic Procedure 10 — FUEL PUMP

Condition

PageEF & EC-102

SymptomDiagnostic Procedure 11 — START SIGNAL

Condition

PageEF & EC-104

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