Sensor Range Charts: Introduction: Notes
Sensor operating range information is supplied so that it can be determined if a sensor is out of calibration. A sensor that is out of calibration may not set a trouble code, however; it may cause driveability problems.
NOTE:
All voltage tests should be performed with a Digital Volt Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless specifically stated different in testing procedures.
AIR TEMPERATURE SENSOR RESISTANCE (METRO & TRACKER)
| Temperature °F (°C) |
Resistance Ohms |
| 68 (20) |
2210-2690 |
| 104 (40) |
1140 |
| 140 (60) |
580 |
| 176 (80) |
290-350 |
AIR VALVE COOLANT TEMPERATURE SENSOR (METRO)
| Temperature °F (°C) |
Valve Position |
| 140 (60) |
Fully Closed |
CTS RESISTANCE (METRO, SPECTRUM & TRACKER)
| Temperature °F (°C) |
Resistance Ohms |
| Metro |
| 68 (20) |
2210-2690 |
| 104 (40) |
1140 |
| 140 (60) |
580 |
| 176 (80) |
290-350 |
| Spectrum |
| 68 (20) |
2100-2900 |
| Tracker |
| 68 (20) |
2280-2870 |
| 104 (40) |
1060 |
| 140 (60) |
530-700 |
| 176 (80) |
290-390 |
MAT SENSOR RESISTANCE (METRO & TRACKER)
| Temperature °F (°C) |
Resistance Ohms |
| 210 (99) |
185 |
| 160 (71) |
450 |
| 100 (38) |
1800 |
| 70 (21) |
3400 |
| 40 (4) |
7500 |
| 20 (-7) |
13,500 |
| 0 (-18) |
25,000 |
| -40 (-40) |
100,000 |
OXYGEN SENSOR VOLTAGE
| Condition |
Volt |
| Lean |
.1 |
| Rich |
.9 |
THROTTLE POSITION SENSOR RESISTANCE (METRO A/T)
| Position |
Resistance Ohms |
| Idle |
4370-8130 |
| Idle |
240-1140 |
| WOT |
3170-6600 |
Courtesy of GENERAL MOTORS CORP.