Diagnostic Procedure 15 — Engine stalls when Accelerating or when Driving at Constant Speed (Cont'd)
EF & EC-104flowchartTROUBLE DIAGNOSES
Diagnostic Procedure 15 — Engine stalls when Accelerating or when Driving at Constant Speed (Cont'd)
1
(B) — continued from previous page
2
CHECK SPARK GAPS. Turn ignition switch "OFF". Remove spark plugs. Install new or good spark plugs. While moving rear end of each spark plug close to grounding point, crank engine. Check for sparks.
N.G.
Check ignition coil, power transistor and related circuits. Refer to "Ignition Signal". (See page EF&EC-140)
O.K.
3
CHECK SPARK PLUGS. Remove spark plugs from engine and check for contaminants, damage and proper spark gaps.
N.G.
Repair or replace.
O.K.
4
CHECK AIR INTAKE FOR LEAKS. Start engine. Check to ensure engine speed increases when blow-by hose is pinched with fingers.
N.G.
Repair areas where air leaks.
O.K.
5
CHECK E.C.U. HARNESS CONNECTOR. Check E.C.U. pin terminals and harness connector for poor contact or damage.
N.G.
same as step 3
O.K.
6
Check E.C.U. supply and ground circuit. Refer to "Main Power Supply and Ground Circuit". (See page EF&EC-128)
N.G.
same as step 3
O.K.
7
Replace E.C.U.
END