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TSB Revision SYMPTOM PROCEDURES 13Ad-61 INSPECTION PROCEDURE 21: Dieseling (Run-on). . COMMENT • Fuel leakage from injectors is suspected, or car- bon build up. . TROUBLESHOOTING HINTS (The most likely • Fuel leakage from injectors. DIAGNOSIS STEP 1. Check the injectors for fuel leakage. symptom is eliminated. INSPECTION PROCEDURE 22: Too high CO and HC concentration when idling . COMMENT • Abnormal air/fuel ratio is suspected. . TROUBLESHOOTING HINTS (The most likely • Malfunction of air/fuel ratio control system. • Deteriorated catalyst. DIAGNOSIS Required Special Tool: • MB991502: Scan Tool (MUT-II) STEP 1. Using scan tool MB991502, read the diagnostic CAUTION To prevent damage to scan tool MB991502, always turn the YES : Refer to GROUP 13A, Diagnostic Trouble Code Chart NO : Go to Step 2. STEP 2. Check the ignition timing. − Ignition Timing Check Q: Is the ignition timing normal? YES : Go to Step 3. belt cover are in the correct position. Then confirm ACX01539 16-PIN MB991502 AC |