Section 12 (Engine Control System - Sensor Range Charts): Introduction
WARNING: This page does not describe the selected car, but rather 26 other vehicles, including the 2003 Saturn LW300, 2003 Saturn LW200, 2003 Saturn L300, 2003 Saturn L200, and 2003 Saturn Ion 3. However, it is still accessible from the selected car via links, so may be relevant.
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.
ALTITUDE VS BAROMETRIC PRESSURE RESISTANCE (EXCEPT 1.8L)
| Altitude - Feet (Meters) |
kPa |
| -1000 (-305) |
101-105 |
| 0 Sea Level |
96-104 |
| 1000 (305) |
94-102 |
| 2000 (610) |
90-98 |
| 3000 (914) |
87-95 |
| 4000 (1219) |
83-91 |
| 5000 (1524) |
80-88 |
| 6000 (1829) |
77-85 |
| 7000 (2134) |
74-82 |
| 8000 (2438) |
71-79 |
| 9000 (2743) |
69-77 |
| 10,000 (3048) |
66-74 |
| 11,000 (3353) |
64-72 |
| 12,000 (3658) |
61-69 |
| 13,000 (3962) |
58-66 |
| 14,000 (4267) |
56-64 |
FUEL PRESSURE SENSOR VOLTAGE (2.2L - CNG)
| psi (kPa) |
Volts |
| 0 (0) |
0.50 |
| 125 (862) |
0.63 |
| 438 (3021) |
0.94 |
| 750 (5172) |
1.25 |
| 1063 (7331) |
1.56 |
| 1375 (9483) |
1.88 |
| 1688 (11,641) |
2.19 |
| 2000 (13,793) |
2.50 |
| 2313 (15,952) |
2.81 |
| 2625 (18,103) |
3.13 |
| 2938 (20,262) |
3.44 |
| 3250 (22,414) |
3.75 |
| 3563 (24,572) |
4.06 |
| 3875 (26,724) |
4.38 |
| 4000 (27,586) |
4.54 |
FUEL TEMPERATURE SENSOR (2.2L - CNG)
| Temperature - °F (°C) |
Ohms |
Volts |
| 302 (150) |
77 |
0.14 |
| 248 (120) |
147 |
0.26 |
| 212 (100) |
240 |
0.40 |
| 176 (80) |
414 |
0.66 |
| 158 (70) |
556 |
0.84 |
| 140 (60) |
758 |
1.08 |
| 122 (50) |
1052 |
1.39 |
| 113 (45) |
1249 |
1.57 |
| 104 (40) |
1489 |
1.76 |
| 95 (35) |
1784 |
1.97 |
| 86 (30) |
2148 |
2.20 |
| 77 (25) |
2600 |
2.43 |
| 68 (20) |
3167 |
2.68 |
| 59 (15) |
3881 |
2.93 |
| 50 (10) |
4764 |
3.18 |
| 41 (5) |
5933 |
3.42 |
| 32 (0) |
7407 |
3.65 |
| 23 (-5) |
9311 |
3.86 |
| -4 (-20) |
19,326 |
4.38 |
| -40 (-40) |
57,536 |
4.77 |
| -58 (-50) |
104,390 |
4.87 |
TEMPERATURE VS RESISTANCE - ECT
SENSOR (3.2L)
| Temperature - °F (°C) |
Ohms |
| 284 (140) |
68-74 |
| 248 (120) |
109-116 |
| 212 (100) |
182-191 |
| 176 (80) |
313-332 |
| 140 (60) |
573-618 |
| 104 (40) |
1118-1231 |
| 77 (25) |
1941-2173 |
| 68 (20) |
2351-2649 |
| 32 (0) |
5466-6326 |
| 14 (-10) |
8642-10,152 |
| -4 (-20) |
14,096-16,827 |
| -40 (-40) |
40,490-50,136 |
TEMPERATURE VS RESISTANCE - IAT
SENSOR (3.2L)
| Temperature - °F (°C) |
Ohms |
| 284 (140) |
74-93 |
| 248 (120) |
114-141 |
| 212 (100) |
184-222 |
| 176 (80) |
312-370 |
| 140 (60) |
565-654 |
| 104 (40) |
1096-1238 |
| 77 (25) |
1900-2100 |
| 68 (20) |
2290-2551 |
| 32 (0) |
5119-5892 |
| 14 (-10) |
7943-9307 |
| -4 (-20) |
12,660-15,120 |
| -40 (-40) |
35,140-43,760 |
TEMPERATURE VS RESISTANCE (EXCEPT 1.8L)
| Temperature - °F (°C) |
Ohms |
| 302 (150) |
47 |
| 284 (140) |
60 |
| 266 (130) |
77 |
| 248 (120) |
100 |
| 230 (110) |
132 |
| 212 (100) |
177 |
| 194 (90) |
241 |
| 176 (80) |
332 |
| 158 (70) |
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 |
TEMPERATURE VS RESISTANCE (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 |