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SYMPTOM TROUBLESHOOTING [ENGINE CONTROL SYSTEM (FS)] 01–03B–17 01–03B End Of Sie NO.5 ENGINE STALLS-AFTER START/AT IDLE [FS] A3U010318881W10 16 • Inspect engine condition while tapping EGR • Does engine condition improve? Yes Replace EGR valve. No Go to next step. 17 • Inspect starting system. • Is starting system normal? Yes Inspect for loose connectors or poor terminal contact. If No Repair or replace components as required. 18 • Verify test results. • If vehicle is repaired, troubleshooting completed. • If vehicle is not repaired or additional diagnostic information is not available, replace PCM. STEP INSPECTION RESULTS ACTION 5 Engine stalls—After start/at idle DESCRIPTION • Engine stops unexpectedly at idle and/or after start. POSSIBLE CAUSE • A/C system improper operation • Air leakage from intake-air system parts • Purge solenoid valve malfunction • Improper operation of IAC valve • EGR valve malfunction • No signal from CKP sensor due to sensor, related wire or wrong installation • Vacuum leakage • Low engine compression • Spark leakage from high-tension leads • Poor fuel quality • PCV valve malfunction • Air cleaner restriction • Restriction in exhaust system • Electrical connector disconnection • Open or short circuit in fuel pump and related harness • No battery power supply to PCM or poor GND • Inadequate fuel pressure • Fuel pump mechanical malfunction • Fuel leakage from fuel injector • Fuel injector clogging • Immobilizer system and/or circuit malfunction • Pressure regulator control (PRC) system malfunction Warning •••• Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always •••• Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or 1712-1U-01G(01-03B).fm 17 ページ 2001年6月29日 金曜日 午前9時33分 |