TROUBLE DIAGNOSES — Diagnostic Table (Cont'd) — Symptom & Condition 20: Engine stall — while accelerating
EF & EC-58flowchartDiagnostic Table (Cont'd)
SYMPTOM & CONDITION 20 — Engine stall — while accelerating
Possible Causes Matrix — Symptom & Condition 20
SPECIFICATIONS
Possible CausesMixture ratio
1
2
3
4O
5O
6
SPECIFICATIONS
Possible CausesIgnition sparks (weak, missing)
1O
2O
3
4
5
6
SPECIFICATIONS
Possible CausesCompression pressure (low)
1
2
3O
4
5
6
CONTROL SYSTEM
Possible CausesCrank angle sensor
1O
2
3
4
5
6O
CONTROL SYSTEM
Possible CausesAir flow meter
1
2
3
4
5
6O
CONTROL SYSTEM
Possible CausesExhaust gas sensor
1
2
3
4O
5O
6
SERVICE PROCEDURE
Service Procedure Flowchart — Symptom & Condition 20
1
CHECK 1 — Check flashes of timing light for weakness during acceleration. (Tool: KV109D10S0, Power transistor unit) [SEF418H]
N.G.
Check ignition signal circuit. [See page EF & EC-90.]
O.K.
2
CHECK 2 — Remove spark plugs and check their ignition sparks. (Ignition coil, Spark plug) [SEF428H]
O.K.
3
MEASURE 3 — Measure compression pressure. [SEF309G]
N.G.
Check cylinder head and gasket. [See EM section.]
O.K.
4
CHECK 4 — Self-diagnosis Mode II — Check mixture ratio by flashes of inspection lamps. 9 times or more/10 sec at 2,000 rpm [SEF373G]
N.G.
DISCONNECT 5 — Disconnect exhaust gas sensor connector, and try to drive. [SEF307G]
O.K.
5
PERFORM 6 — Self-diagnosis Mode III — Perform self-diagnosis Mode III and V (for crank angle sensor and air flow meter). [SEF285G]
N.G.
6
Check the malfunctioning parts and/or circuits. [See page EF & EC-82 (crank angle sensor), page EF & EC-84 (air flow meter).]
See also
EF & EC-90Trouble Diagnoses — Diagnostic Procedure 6: IGNITION SIGNAL (Code No. 21) & DETONATION SENSOR (Code No. 34)EM sectionEF & EC-25IDLE SPEED/IGNITION TIMING/IDLE MIXTURE RATIO INSPECTIONEF & EC-82Diagnostic Procedure 2 — CRANK ANGLE SENSOR (Code No. 11)EF & EC-84TROUBLE DIAGNOSES — Diagnostic Procedure 3 — AIR FLOW METER (Code No. 12)