Engine Control System - Sensor Range Charts: Introduction
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 will cause driveability problems.
NOTE:
Unless stated otherwise in test procedure, perform all voltage tests with a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
ECT & IAT SENSOR RESISTANCE (1.0L, 1.3L & 1.8L)
| Temperature °F (°C) |
Ohms |
| 176 (80) |
315 |
| 158 (70) |
435 |
| 140 (60) |
580 |
| 122 (50) |
810 |
| 113 (45) |
940 |
| 104 (40) |
1150 |
| 95 (35) |
1360 |
| 86 (30) |
1600 |
| 77 (25) |
2000 |
| 68 (20) |
2400 |
| 59 (15) |
3000 |
| 50 (10) |
3600 |
| 41 (5) |
4600 |
| 32 (0) |
5700 |
| 23 (-5) |
7400 |
| 14 (-10) |
9800 |
| 5 (-15) |
12,700 |
| -4 (-20) |
16,000 |
ECT & IAT SENSOR RESISTANCE (1.9L)
| Temperature °F (°C) |
Ohms |
| 284 (140) |
63-68 |
| 248 (120) |
104-113 |
| 220 (105) |
159-172 |
| 200 (94) |
215-235 |
| 180 (83) |
302-334 |
| 160 (72) |
430-480 |
| 140 (60) |
650-730 |
| 120 (49) |
980-1100 |
| 100 (38) |
1500-1700 |
| 80 (27) |
2400-2700 |
| 60 (16) |
3900-4500 |
| 40 (4) |
6600-8400 |
| 20 (-7) |
11,000-15,000 |
| 0 (-18) |
21,000-27,000 |
| -20 (-29) |
39,000-53,000 |
| -40 (-40) |
77,000-109,000 |
ECT , IAT & TFT SENSOR RESISTANCE (EXCEPT 1.0L, 1.3L, 1.8L & 1.9L)
| Temperature °F (°C) |
Ohms |
| 212 (100) |
177 |
| 194 (90) |
241 |
| 176 (80) |
332 |
| 158 (70) |
467 |
| 140 (60) |
667 |
| 122 (50) |
973 |
| 113 (45) |
1188 |
| 104 (40) |
1459 |
| 95 (35) |
1802 |
| 86 (30) |
2238 |
| 77 (25) |
2796 |
| 68 (20) |
3520 |
| 59 (15) |
4450 |
| 50 (10) |
5670 |
| 41 (5) |
7280 |
| 32 (0) |
9420 |
| 23 (-5) |
12,300 |
| 14 (-10) |
16,180 |
| 5 (-15) |
21,450 |
| -4 (-20) |
28,680 |
| -22 (-30) |
52,700 |
| -40 (-40) |
100,700 |
MAP SENSOR VOLTAGE (1.9L)
| Altitude Feet |
Volts |
| Below 1000 |
3.8-5.5 |
| 1000-2000 |
3.6-5.3 |
| 2000-3000 |
3.5-5.1 |
| 3000-4000 |
3.3-5.0 |
| 4000-5000 |
3.2-4.8 |
| 5000-6000 |
3.0-4.6 |
| 6000-7000 |
2.9-4.5 |
| 7000-8000 |
2.8-4.3 |
| 8000-9000 |
2.6-4.2 |
| 9000-10,000 |
2.5-4.0 |
OIL PRESSURE SENSOR RESISTANCE (5.7L VIN G - CORVETTE)
| Temperature °F (°C) |
Ohms |
| 212 (100) |
177 |
| 194 (90) |
241 |
| 176 (80) |
332 |
| 158 (70) |
467 |
| 140 (60) |
667 |
| 122 (50) |
973 |
| 113 (45) |
1188 |
| 104 (40) |
1459 |
| 95 (35) |
1802 |
| 86 (30) |
2238 |
| 77 (25) |
2796 |
| 68 (20) |
3520 |
| 59 (15) |
4450 |
| 50 (10) |
5670 |
| 41 (5) |
7280 |
| 32 (0) |
9420 |
| 23 (-5) |
12,300 |
| 14 (-10) |
16,180 |
| 5 (-15) |
21,450 |
| -4 (-20) |
28,680 |
| -22 (-30) |
52,700 |
| -40 (-40) |
100,700 |
OXYGEN SENSOR VOLTAGE
| Condition |
Volts |
| Except Metro, Firefly (Canadian) & Prizm |
| Lean |
0.1 |
| Rich |
1.0 |
| Metro, Firefly (Canadian) & Prizm |
| Lean |
100 mV |
| Rich |
900 mV |