Diagnostic Procedure 16 — Engine Stalls when the Electrical Load is Heavy (Cont'd)
EF & EC-458flowchartDiagnostic Procedure 16 — Engine Stalls when the Electrical Load is Heavy (Cont'd)
1
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.
2
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.
3
CHECK E.C.U. POWER SUPPLY AND GROUND CIRCUIT. Refer to page EF & EC-464.
N.G.
Repair or replace harness or connector.
O.K.
4
TRY A KNOWN GOOD E.C.U.*
Trouble is not fixed.
INSPECTION END
Trouble is fixed.
5
Replace E.C.U.
NOTE
*: E.C.U. may be the cause of a problem, but this is rarely the case.