MAF Sensor Rationality Monitor
WARNING: This page is about a different car, the 2006 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.
Operation
MAF SENSOR RATIONALITY MONITOR OPERATION
| DTCs | P0101 (Phase 1, Phase 2) |
| Monitor execution | Continuous |
| Sensors / components OK | ECT, IAT, Barometric pressure |
| Monitoring Duration | Phase 1 (drifted low): 3 s x 3 times, Phase 2 (drifted high): 25 s |
Enable conditions
MAF SENSOR RATIONALITY MONITOR ENABLE CONDITIONS
| Parameter | Minimum | Maximum |
|---|---|---|
| Phase 2 | ||
| Engine speed | 2000 rpm | |
| TP | 9.77° (11.5%) | |
| Time from ignition on | 6.4 s | |
| IAT | -8 (17.6) °C (°F) | |
| ECT | -8 (17.6) °C (°F) | |
| Barometric pressure | 74.5 kPa | |
| MAF sensor Range Check | No DTC | |
| TP sensor Range check | No DTC | |
| Phase 3 | ||
| Engine speed | 1500 rpm | |
| TP | 0.98° (1.2%) | |
| Engine coolant temp. | 74 (165) °C (°F) | 110 (230) °C (°F) |
| Time from ignition on | 6.4 s | |
| Fuel F/B mode | Closed loop mode | |
| Primary O2 voltage | 0.45 V | |
| IAT | -8 (17.6) °C (°F) | |
| Barometric pressure | 74.5 kPa | |
| MAF sensor Range Check | No DTC | |
| TP sensor Range check | No DTC | |
Typical malfunction thresholds
MAF SENSOR RATIONALITY MONITOR TYPICAL MALFUNCTION THRESHOLDS
| Phase 1: Measured MAF < 10.2 - 12.7 g/sec |
| Phase 2: Measured MAF ≥ 7.5 g/sec |