With Manual Transaxle
HEATED OXYGEN SENSOR INSPECTIONUSING THE SST (ENGINE SIGNAL MONITOR)
1. Warm up the engine to normal operating temperature.
Engine System Monitor SST:
2. Connect the SSTs to the ECM.
3. Measure the voltage at ECM terminals 3C and 3D.
4. If not as specified, inspect the following.
- Fuel system
- On-board diagnostic system
- Intake-air system
5. If all the systems are OK, replace the heated oxygen sensor.
USING THE SST (NGS)
New Generation Star (NGS) Tester Connected To DLC-2:
1. Connect the SSTs to the data link connector-2.
2. Select the "PID/DATA MONITOR AND RECORD" function of the NGS.
3. Select "FHO2S, RHO2S" on the NGS display. The NGS measures and shows the voltage.
4. If not as specified, inspect the following.
- Fuel system
- On-board diagnostic system
- Intake-air system
5. If all the systems are OK, replace the heated oxygen sensor.
HEATER INSPECTION
1. Disconnect the heated oxygen sensor connector.
2. Measure the resistance between heated oxygen sensor heater (FRONT B-C, REAR C-D terminals) by using an ohmmeter.
Specification: Approx. 6 Ohms @ 20°C (68°F)
3. It not as specified, replace the heated oxygen sensor.