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FLA -138 FUEL SYSTEM POWER CIRCUIT INSPECTION E9385DF1 1. IG "OFF" & Disconnect HO2S(B2/S1) connector. 2. IG "ON" & ENG "OFF". 3. Measure voltage between terminal 3 of HO2S(B2/S1) harness connector and chassis ground. Specification : B+ 4. Is the measured voltage within specification ? YES ▶ Go to "Control Circuit Inspection" procedure. NO ▶ Repair open or short to ground in HO2S(B2/S1) Heater power circuit then, go to "Verification of Vehicle Repair" CONTROL CIRCUIT INSPECTION EBFE5349 1. Check short to ground in harness. 1) IG "OFF" and disconnect HO2S(B2/S1) connector. 2) Measure resistance between terminal 4 of HO2S(B2/S1) harness connector and chassis ground. Specification : Infinite 3) Is the measured resistance within specification ? YES ▶ Go to "Check Open in harness" as follows. NO ▶ Repair short to ground in HO2S (B2/S1) heater control circuit and go to "Verification of Vehicle Repair" pro- 2. Check open in harness 1) IG "OFF" and disconnect HO2S(B2/S1) and PCM connector. 2) Measure resistance between terminal 4 of HO2S(B2/S1) harness connector and terminal C30-B (67) of PCM Specification : Approx. below 1Ω 3) Is the measured resistance within specification ? YES ▶ Go to "Component Inspection" procedure. |