Diagnostic Procedure 10 — Engine Stalls while operating (Cont'd)
EF & EC-83flowchartCONSULT (with) vs without-CONSULT procedure variants given for the fuel pressure check.
TROUBLE DIAGNOSES
Diagnostic Procedure 10 — Engine Stalls while operating (Cont'd)
1
A (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 fuel pressure.
[With CONSULT] • Start engine.
• With "WORK SUPPORT" showing on display, eliminate fuel pressure using "Fuel Pressure Removal".
• After stalling engine, crank engine two or three times.
• Install fuel pressure gauge and check fuel pressure.
Fuel pressure during idle: Approx. 245 kPa (2.45 bar, 2.5 kg/cm², 36 psi)
Fuel pressure (when pressure regulator vacuum hose is removed): Approx. 294 kPa (2.94 bar, 3.0 kg/cm², 43 psi)
[Without CONSULT] • Start engine.
• Remove fuel pump fuse to eliminate fuel pressure.
• After stalling engine, crank engine two or three times.
• Install fuel pressure gauge and check fuel pressure.
Fuel pressure during idle: Approx. 245 kPa (2.45 bar, 2.5 kg/cm², 36 psi)
Fuel pressure (when pressure regulator vacuum hose is removed): Approx. 294 kPa (2.94 bar, 3.0 kg/cm², 43 psi)
N.G.
Check fuel pressure regulator diaphragm.
O.K.
4
Check E.C.U. harness connector.
• Check E.C.U. pin terminals and harness connector for poor contact or damage.
N.G.
Repair or replace.
O.K.
5
Check E.C.U power supply and ground circuit. Refer to "Main Power Supply and Ground Circuit". (See page EF&EC-128).
N.G.
same as step 4
O.K.
6
Replace E.C.U.
END