Signal Circuit Inspection

Check for Open in Harness 

1. IG KEY: OFF, Engine: OFF
2. Disconnect HO2S connector (B-27) and ECM connector.
3. Measure resistance between terminal 2 of the HO2S harness connector B-27 and C4 of the ECM harness connector.
   1. Specification: Approx. 0Ω
      Fig 1: Measuring Resistance Between Terminal 2 Of HO2S Harness Connector B-27 And C4 Of ECM Harness Connector

      
4. Is resistance near the specified value?

   YES

   1. Go to "GROUND CIRCUIT INSPECTION " procedure.

   NO

   1. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.