DTC Detection Logic
To judge malfunctions, this diagnosis measures response time of the A/F signal computed by ECM from the A/F sensor 1 signal. The time is compensated by engine operating (speed and load), fuel feedback control constant, and the A/F sensor 1 temperature index. Judgment is based on whether the compensated time (the A/F signal cycling time index) is inordinately long or not.
P015A A/F SENSOR 1 - DTC DESCRIPTION
| DTC | M.U.T.-III SE screen terms (Trouble diagnosis content) | DTC detection condition | ||
|---|---|---|---|---|
| P015A | 00 | A/F SENSOR1 (B1) (O2 sensor delayed response - rich to lean bank 1 sensor 1) |
Diagnosis condition | - |
| Signal (terminal) | A/F sensor 1 signal | |||
| Threshold | The response time of a A/F sensor 1 signal delays more than the specified time computed by ECM | |||
| Diagnosis delay time | - | |||