Power Supply Circuit Inspection

Check Voltage in Power Harness

1. Ignition "OFF".
2. Disconnect HO2S connector.
3. Ignition: ON, Engine: OFF
4. Measure voltage between terminal "3" of the HO2S harness connector and chassis ground.
   1. Specification: Approx. B+
      Fig 1: Measuring Voltage Between Terminal 3 Of HO2S Harness Connector And Chassis Ground

      
5. Is the voltage within specifications?

   YES

   1. Go to "CONTROL CIRCUIT INSPECTION " procedure.

   NO

   1. Check for open in power harness. Repair as necessary and the go to "VERIFICATION OF VEHICLE REPAIR " procedure.