RX8 2RTR-1.3L (2006)
Oxygen Sensor: Component Tests and General Diagnostics
Front Heated Oxygen Sensor (HO2S) Inspection
FRONT HEATED OXYGEN SENSOR (HO2S) INSPECTION
NOTE: Before performing the following inspection, make sure to follow the troubleshooting flowchart. (See FOREWORD.) See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Foreword
Front HO2S Current Inspection
1. Warm up the engine to normal operating temperature.
2. Using the M-MDS, verify that the current of the front HO2S (M-MDS PID: 02S11) is as indicated in the table.
Front HO2S Current
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If it cannot be verified even though the related harnesses have no malfunction, replace the front HO2S.
Front HO2S Heater Resistance Inspection
1. Disconnect the front H02S connector.
2. Measure the resistance between front HO2S terminals C and D.
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If not within the specification, replace the front HO2S.
Front HO2S heater resistance
2.16 - 2.90 ohms [20 °C {68 °F}]
Circuit Open/Short Inspection
1. Disconnect the PCM connector.
2. Disconnect the front HO2S connector.