Diagnostic Procedure 11 — Engine Stalls when the Engine is Hot (Cont'd)
EF & EC-446flowchartSR20DE engine.
Diagnostic Procedure 11 — Engine Stalls when the Engine is Hot (Cont'd)
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(A) (from previous page)
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4. CHECK IGNITION SPARK. 1. Disconnect ignition wire from spark plug. 2. Connect a known good spark plug to the ignition wire. 3. Place end of spark plug against a suitable ground and crank engine. 4. Check for spark.
N.G.
Check ignition coil, power transistor and their circuits. (See page EF & EC-480.)
O.K.
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5. 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.
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6. 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.
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7. CHECK E.C.U. POWER SUPPLY AND GROUND CIRCUIT. Refer to page EF & EC-464.
N.G.
same as step 4
O.K.
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8. 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.