OXYGEN SENSOR FEEDBACK VOLTAGE TEST
- Warm engine to normal operating temperature. Connect analog voltmeter to terminals VF1 and E1 terminals of Data Link Connector No. 1 (DLC1). (Scheme 14) Perform test procedures listed. (Scheme 15)
- Depending on model application, some vehicles may be equipped with a main oxygen sensor, sub-oxygen sensor and a sensor heater. See «OXYGEN SENSOR APPLICATION»(ref-21343-S01090670482001010300000) table. NOTE: Diagnostic trouble Codes 21, 25, 26, 27 and 28 (some models) are oxygen sensor circuit codes. For diagnostic trouble code charts, see articles listed below: «TESTS W/CODES - 1.8L»(ref-21371) «TESTS W/CODES - 2.2L»(ref-21372)
| Application Type | Main Oxygen Sensor | Sub-Oxygen Sensor | Sensor Heater |
|---|---|---|---|
| 1.8L (7A-FE) | X | X | N/A |
| 2.2L (5S-FE) | X | (1) X | N/A |
| (1) Applies to California models. | |||
| (1) | Applies to California models. |
OXYGEN SENSOR APPLICATION
Scheme 14
Scheme 15
EXHAUST GAS RECIRCULATION (EGR) SYSTEM TEST
Note. EGR systems contain different components and have different operating parameters depending on application. see scheme 34-39. When testing EGR system and components, use proper illustration to determine component location.
See also:
• ADJUSTMENTS
• WIRING DIAGRAMS