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FLA -130 FUEL SYSTEM SIGNAL WAVEFORM AND DATA EF09793A Fig1) The signal waveforms of front HO2S(the upper) and heater(the lower) at idle Fig. 1 Fig. 2 SCMF16158L The HO2S requires a minimum temperature to provide a closed loop fuel control system. So the HO2S contains a heater MONITOR DTC STATUS E7B82B16 Refer to DTC P0036. TERMINAL AND CONNECTOR INSPECTION E15C4596 Refer to DTC P0036. CONTROL CIRCUIT INSPECTION E24CC29E 1. IG "OFF" & disconnect HO2S(B1/S2) connector. 2. IG "ON" & ENG "OFF". 3. Measure voltage between terminal 4 of HO2S(B1/S2) harness connector and chassis ground. Specification : Approx. 0 V 4. Is the measured voltage within specification ? YES ▶ Go to HO2S(B1/S2) "Component Inspection" procedure. NO ▶ Repair short to battery in HO2S (B1/S2) heater control circuit and go to "Verification of Vehicle Repair" procedure. |