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a Vacuum leak. b Check if fuel is contaminated. c Check if the injectors are clogged. d Check if the foreign materials (water, kerosene, etc.) got into Then confirm that the malfunction symptom is eliminated. NO: Check if the following signals change suddenly by wiggling the circuit harness and connectors. a Crankshaft position sensor signal. b Mass airflow sensor signal. c Injector drive signal. d Primary and secondary ignition signal. e Fuel pump drive signal. f ECM or PCM power supply voltage. Then confirm that the malfunction symptom is eliminated. INSPECTION PROCEDURE 12: The Engine Stalls when Accelerating (pass out). M11310100289USA0000010000 COMMENT ⦆ In case such as the above, the cause is probably TROUBLESHOOTING HINTS (The most likely ⦆ Malfunction of the ignition system. ⦆ Malfunction of the purge control system. ⦆ Malfunction of the EGR system ⦆ Improper operation of the PCV valve. ⦆ Vacuum leak. ⦆ Malfunction of the ECM.
DIAGNOSIS Required Special Tools: ⦆ MB991958: Scan Tool (M.U.T.-III Sub Assembly) ⦆ MB991824: V.C.I. ⦆ MB991827: USB Cable ⦆ MB991910: Main Harness A STEP 1. Check if the EGR valve sounds during initialization. Q:Is the initialization sound heard in the EGR valve? YES: Go to Step 2. MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS> 13Ab-787 SYMPTOM PROCEDURES |