TROUBLE DIAGNOSES - Diagnostic Table (Cont'd) - Symptom & Condition 11: Abnormal idling - high idle (after warm-up)
EF & EC-49flowchartDiagnostic Table (Cont'd)
Symptom & Condition 11 - Possible Causes Matrix
| Category | Possible Causes | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SPECIFICATIONS | Mixture ratio | O | O | O | O | O | ||||||
| SPECIFICATIONS | Ignition timing (too advanced) | O | ||||||||||
| INTAKE SYSTEM | Air duct (leaks) | O | ||||||||||
| INTAKE SYSTEM | Throttle chamber (air leaks) | O | ||||||||||
| INTAKE SYSTEM | Throttle valve (stuck control wire) | O | ||||||||||
| INTAKE SYSTEM | Intake manifold (gasket) (air leaks) | O | ||||||||||
| INTAKE SYSTEM | Air regulator (stuck open) | O | ||||||||||
| INTAKE SYSTEM | A.A.C. valve | O | ||||||||||
| INTAKE SYSTEM | F.I.C.D. solenoid (remaining ON) | O | ||||||||||
| CONTROL SYSTEM | Crank angle sensor | O | ||||||||||
| CONTROL SYSTEM | Air flow meter | O | ||||||||||
| CONTROL SYSTEM | Engine temperature sensor | O | O | |||||||||
| CONTROL SYSTEM | Idle switch (remaining OFF) | O | O | |||||||||
| OTHERS | Battery (voltage too low) |
SPECIFICATIONS
Possible CausesMixture ratio
1
2O
3O
4
5O
6O
7
8
9O
10
11
SPECIFICATIONS
Possible CausesIgnition timing (too advanced)
1O
2
3
4
5
6
7
8
9
10
11
INTAKE SYSTEM
Possible CausesAir duct (leaks)
1
2O
3
4
5
6
7
8
9
10
11
INTAKE SYSTEM
Possible CausesThrottle chamber (air leaks)
1
2
3
4O
5
6
7
8
9
10
11
INTAKE SYSTEM
Possible CausesThrottle valve (stuck control wire)
1
2
3
4O
5
6
7
8
9
10
11
INTAKE SYSTEM
Possible CausesIntake manifold (gasket) (air leaks)
1
2O
3
4
5
6
7
8
9
10
11
INTAKE SYSTEM
Possible CausesAir regulator (stuck open)
1
2
3O
4
5
6
7
8
9
10
11
INTAKE SYSTEM
Possible CausesA.A.C. valve
1
2
3
4
5
6
7O
8
9
10
11
INTAKE SYSTEM
Possible CausesF.I.C.D. solenoid (remaining ON)
1
2
3
4
5
6
7
8O
9
10
11
CONTROL SYSTEM
Possible CausesCrank angle sensor
1
2
3
4
5
6
7
8
9O
10
11
CONTROL SYSTEM
Possible CausesAir flow meter
1
2
3
4
5
6
7
8
9
10O
11
CONTROL SYSTEM
Possible CausesEngine temperature sensor
1
2
3
4
5
6
7
8
9O
10
11O
CONTROL SYSTEM
Possible CausesIdle switch (remaining OFF)
1
2
3
4
5
6
7O
8
9O
10
11
OTHERS
Possible CausesBattery (voltage too low)
1
2
3
4
5
6
7
8
9
10
11
SERVICE PROCEDURE
Service Procedure - Symptom 11: Abnormal idling - high idle (after warm-up)
Rendering diagram…