Control Circuit Inspection
- Ignition "OFF".
- Disconnect HO2S connector.
- Ignition "ON" & Engine "OFF".
- Measure voltage between Heater Control terminal of the HO2S harness connector and chassis ground.
Specification: 4-5V
2013
Fig 1: Measuring Voltage Between Heater Control Terminal Of HO2S Harness Connector And Chassis GroundCourtesy of HYUNDAI MOTOR AMERICA
2014
Refer to appropriate SYSTEM WIRING DIAGRAM article
- Is voltage within the specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.NOTE: HO2S must have a clean air reference to function properly. The air is obtained by way of the sensor wire(s). Do not attempt to repair the wire(s), connector, or the terminals.