Trouble Diagnoses — Diagnostic Procedure 3 — Unstable Idle (Cont'd)
EF & EC-63flowchartDiagnostic Procedure 3 — Unstable Idle (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 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 fuel pressure. Start engine. With "WORK SUPPORT" showing on display, eliminate fuel pressure using "FUEL PRESSURE RELEASE." 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). (Without CONSULT: Start engine. Remove fuel pump fuse to release fuel pressure. Install fuel pressure gauge and check fuel pressure. Fuel pressure during idle: Approx. 245 kPa (2.45 bar, 2.5 kg/cm2, 36 psi).)
N.G.
Check fuel pump and circuit. Refer to "Fuel Pump" (See page EF&EC-155).
O.K.
5
Check air flow meter. Conduct self-diagnosis and "Real Time Diagnosis" with "DATA MONITOR" showing on display. (Refer to "CONSULT".) (Without CONSULT: Conduct self-diagnosis Mode 11. Refer to "Self-Diagnosis.")
N.G.
Check air flow meter and circuit. Refer to "Air Flow Meter" (See page EF&EC-134).
O.K.
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B (continues to next page)