Intake Air Temperature 2 Sensor (IAT2)
The Intake Air Temperature 2 sensor (also known as Manifold Charge Temperature) is mounted to the intake manifold and is used to compute cylinder air charge and provide input for various spark control functions. It is integrated with the intake manifold pressure sensor.
MANIFOLD CHARGE TEMPERATURE SENSOR CIRCUIT RANGE CHECK
| DTCs | P0097 Intake Air Temperature Sensor 2 Circuit Low (Bank 1) P0098 Intake Air Temperature Sensor 2 Circuit High (Bank 1) |
| Monitor execution | Continuous |
| Monitor Sequence | None |
| Sensors OK | not applicable |
| Monitoring Duration | 5 seconds to register a malfunction |
TYPICAL MANIFOLD CHARGE TEMPERATURE SENSOR CIRCUIT RANGE MALFUNCTION THRESHOLDS
| P0097 IAT2 voltage < 0.244 volts P0098 IAT2 voltage > 4.96 volts |
IAT1, CACT, IAT2, EOT TEMPERATURE SENSOR TRANSFER FUNCTION
| Volts | A/D counts in PCM | Temperature, degrees F |
| 4.89 | 1001 | -40 |
| 4.86 | 994 | -31 |
| 4.81 | 983 | -22 |
| 4.74 | 970 | -13 |
| 4.66 | 954 | -4 |
| 4.56 | 934 | 5 |
| 4.45 | 910 | 14 |
| 4.30 | 880 | 23 |
| 4.14 | 846 | 32 |
| 3.95 | 807 | 41 |
| 3.73 | 764 | 50 |
| 3.50 | 717 | 59 |
| 3.26 | 666 | 68 |
| 3.00 | 614 | 77 |
| 2.74 | 561 | 86 |
| 2.48 | 508 | 95 |
| 1.99 | 407 | 113 |
| 1.77 | 361 | 122 |
| 1.56 | 319 | 131 |
| 1.37 | 280 | 140 |
| 1.20 | 246 | 149 |
| 1.05 | 215 | 158 |
| 0.92 | 188 | 167 |
| 0.80 | 165 | 176 |
| 0.70 | 144 | 185 |
| 0.61 | 126 | 194 |
| 0.54 | 110 | 203 |
| 0.47 | 96 | 212 |
| 0.41 | 85 | 221 |
| 0.36 | 74 | 230 |
| 0.32 | 65 | 239 |
| 0.28 | 57 | 248 |
| 0.25 | 51 | 257 |
| 0.22 | 45 | 266 |
| 0.19 | 40 | 275 |
| 0.17 | 35 | 284 |
| 0.15 | 31 | 293 |
| 0.14 | 28 | 302 |