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FLA -242 FUEL SYSTEM YES ▶ Go to "Terminal and connector inspection" procedure. NO ▶ Fault is intermittent caused by poor contact in the sensor’s and/or PCM’s connector or was repaired and PCM TERMINAL AND CONNECTOR INSPECTION E95CE0B0 1. Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by 2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or 3. Has a problem been found? YES ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure NO ▶ Go to "Signal Circuit Inspection" procedure. SIGNAL CIRCUIT INSPECTION ECA7A130 1. IG "OFF" and disconnect HO2S(B1/S1) connector. 2. IG "ON" and ENG "OFF" 3. Measure voltage between terminal 1 of HO2S(B1/S1) harness connector and chassis ground. Specification : Approx. 3.5V - when pumping current is ON 4. Is the measured voltage within specification? YES ▶ Go to "Component Inspection" procedure. NO ▶ Repair short to ground in harness, and go to "Verification of Vehicle Repair" procedure. COMPONENT INSPECTION EA7C37B2 1. Check the Signal waveform of HO2S 1) IG "OFF" and connect HO2S connector. 2) Engine start. |