TROUBLE DIAGNOSES — Diagnostic Table (Cont'd) — Symptom 10: Abnormal idling — low idle (after warm-up)
EF & EC-48flowchartDiagnostic Table (Cont'd)
SYMPTOM & CONDITION 10 — Abnormal idling — low idle (after warm-up)
Possible Causes vs. Check Step Matrix — Symptom 10
SPECIFICATIONS
Possible CausesMixture ratio
①
②O
③
④O
⑤
⑥
⑦
SPECIFICATIONS
Possible CausesIgnition timing (too retarded)
①O
②
③
④
⑤
⑥
⑦
INTAKE SYSTEM
Possible CausesThrottle chamber (with ports clogged)
①
②
③O
④
⑤
⑥
⑦
INTAKE SYSTEM
Possible CausesThrottle valve (clogged)
①
②
③
④O
⑤
⑥
⑦
CONTROL SYSTEM
Possible CausesCrank angle sensor
①
②
③
④
⑤O
⑥
⑦
CONTROL SYSTEM
Possible CausesAir flow meter
①
②
③
④
⑤
⑥O
⑦
CONTROL SYSTEM
Possible CausesEngine temperature sensor
①
②
③
④
⑤
⑥O
⑦O
SERVICE PROCEDURE
Service Procedure Flowchart — Symptom 10: Low idle after warm-up
Rendering diagram…
See also
EF & EC-22Direct Ignition System (Cont'd) — Checking Ignition Timing and Idle SpeedEF & EC-25IDLE SPEED/IGNITION TIMING/IDLE MIXTURE RATIO INSPECTIONEF & EC-84TROUBLE DIAGNOSES — Diagnostic Procedure 3 — AIR FLOW METER (Code No. 12)EF & EC-86Diagnostic Procedure 4 — ENGINE TEMPERATURE SENSOR (Code No. 13)EL section