Engine Controls - Sensor Operating Range Charts: Introduction: Notes
Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it may cause driveability problems.
NOTE:
Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
COOLANT TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
| 0 (-18) |
14,650 |
| 20 (-7) |
8100 |
| 40 (4) |
4780 |
| 70 (21) |
2500 |
| 100 (38) |
1250 |
| 160 (71) |
400 |
| 210 (99) |
190 |
EGR TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
| 68 (20) |
214,000-313,800 |
| 104 (40) |
90,900-125,700 |
| 140 (60) |
42,100-55,500 |
| 176 (80) |
21,100-26,500 |
| 212 (100) |
11,200-13,600 |
IAT SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
| 0 (-18) |
14,800 |
| 20 (-7) |
8250 |
| 40 (4) |
5200 |
| 70 (20) |
2500 |
| 100 (38) |
1300 |
| 160 (71) |
450 |
| 210 (99) |
200 |
OXYGEN SENSOR HEATER RESISTANCE
| Application |
Ohms |
| Tracker |
3-5.5 |
THROTTLE POSITION SENSOR (TPS) RESISTANCE
| Condition |
Resistance (Ohms) |
| Between Terminals C & D |
0-500 |
| Between Terminals C & D |
No Continuity |
| Between Terminals A & D |
3500-6500 |
| Between Terminals B & D |
| At Idle |
300-2000 |
| At Wide Open Throttle |
2000-6500 |
Courtesy of GENERAL MOTORS CORP.