Diagnostic Procedure 12 — Engine Stalls when the Engine is Cold (Cont'd)
EF & EC-544flowchartSR20DET engine.
Diagnostic Procedure 12 — Engine Stalls when the Engine is Cold (Cont'd)
1
A (continued from previous page)
2
CHECK SPARK PLUGS. Remove the spark plugs and check for fouling, etc.
N.G.
Repair or replace spark plug(s).
O.K.
3
CHECK FUEL PRESSURE. 1. Release fuel pressure to zero. (Refer to page EF & EC-638.) 2. Install fuel pressure gauge and check fuel pressure. At idle: Approx. 245 kPa (2.45 bar, 2.5 kg/cm2, 36 psi). A few seconds after ignition switch is turned from OFF to ON: 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 the E.C.U. pin terminals for damage or poor connection of E.C.U. harness connector.
N.G.
Repair or replace.
O.K.
5
CHECK E.C.U. POWER SUPPLY AND GROUND CIRCUIT. Refer to page EF & EC-560.
N.G.
same as step 4
O.K.
6
TRY A KNOWN GOOD E.C.U.*
Trouble is not fixed.
INSPECTION END
Trouble is fixed.
Replace E.C.U.
NOTE
*: E.C.U. may be the cause of a problem, but this is rarely the case.