Signal Waveform And Data
SIGNAL WAVEFORM AND DATA REFERENCE
| Test Condition | Scan Tool Parameter | ||
|---|---|---|---|
| O2 SNSR VOL.-B1/S1 | Scan Tool Parameter | ||
| Normal Value when circuit is normal | Idle after warm up | Signal is switching from rich (above 0.45V) to lean (below 0.45V) a minimum of 3 times in 10 seconds. | above 0.7V |
| HO2S (B1S1) signal circuit open | Approx. 0.43~0.45V | - | |
| HO2S (B1S2) signal circuit open | - | Approx. 0.43~0.45V | |
NOTE:
If any codes relating to injectors, HO2S, ECT (Engine Coolant Temperature) Sensor, Throttle Position sensor or Mass Air Flow Sensor are stored, do ALL REPAIRS associated with those codes before proceeding with this troubleshooting tree.