Engine Controls - Sensor Operating 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 may 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.
ACCELERATOR PEDAL POSITION SENSOR VOLTAGE (2.2L - SATURN)
| Throttle Position |
Volts |
| At Idle |
| APP Sensor No. 1 |
0.94 |
| APP Sensor No. 2 |
4.55 |
| Wide Open Throttle |
| APP Sensor No. 1 |
4.25 |
| APP Sensor No. 2 |
2.90 |
ACCELERATOR PEDAL POSITION SENSOR VOLTAGE (3.0L)
| Throttle Position |
Volts |
| At Idle |
| APP Sensor No. 1 |
0.98 |
| APP Sensor No. 2 |
0.49 |
| Wide Open Throttle |
| APP Sensor No. 1 |
4.16 |
| APP Sensor No. 2 |
2.08 |
ACCELERATOR PEDAL POSITION SENSOR VOLTAGE (4.2L)
| Throttle Position |
Volts |
| At Idle |
| APP Sensor No. 1 |
Less Than 1.1 |
| APP Sensor No. 2 |
Greater Than 3.9 |
| Wide Open Throttle |
| APP Sensor No. 1 |
Greater Than 2.0 |
| APP Sensor No. 2 |
Less Than 3.0 |
ACCELERATOR PEDAL POSITION SENSOR VOLTAGE (4.8L, 5.3L, 6.0L & 8.1L)
| Throttle Position |
Volts |
| At Idle |
| APP Sensor No. 1 |
Less Than 1.0 |
| APP Sensor No. 2 |
Greater Than 4.0 |
| APP Sensor No. 3 |
Greater Than 3.8 |
| Wide Open Throttle |
| APP Sensor No. 1 |
Greater Than 2.0 |
| APP Sensor No. 2 |
Less Than 2.9 |
| APP Sensor No. 3 |
Less Than 3.1 |
ACCELERATOR PEDAL POSITION SENSOR VOLTAGE (6.5L & 6.6L)
| Throttle Position |
Volts |
| At Idle |
| APP Sensor No. 1 |
.44-.95 |
| APP Sensor No. 2 |
3.9-4.5 |
| APP Sensor No. 3 |
3.6-4.1 |
| At 2500 RPM |
| APP Sensor No. 1 |
.75-1.25 |
| APP Sensor No. 2 |
3.7-4.3 |
| APP Sensor No. 3 |
3.5-4.0 |
FUEL GAUGE PULSE WIDTH MODULATION OUTPUT (CNG)
| Percent Fuel |
PWM Output |
| 10 |
17 |
| 20 |
33 |
| 30 |
45 |
| 40 |
52 |
| 50 |
56 |
| 60 |
59 |
| 70 |
62 |
| 80 |
64 |
| 90 |
67 |
| 100 |
70 |
FUEL RAIL PRESSURE SENSOR OUTPUT VOLTAGE VS PRESSURE (CNG)
| Psi (KPa) |
Volts |
| 0 (0) |
0.5 |
| 10 (68.95) |
0.9 |
| 20 (137.90) |
1.3 |
| 30 (206.85) |
1.7 |
| 40 (275.80) |
2.1 |
| 50 (344.75) |
2.5 |
| 60 (413.70) |
2.9 |
| 70 (483.65) |
3.3 |
| 80 (551.60) |
3.7 |
| 90 (620.55) |
4.1 |
| 100 (689.50) |
4.5 |
FUEL RAIL TEMPERATURE SENSOR OUTPUT RESISTANCE VS TEMPERATURE VS VOLTAGE (CNG)
| Temperature - °F (°C) |
Volts |
Ohms |
| -58 (-58) |
4.97 |
1,579,500.00 |
| -40 (-40) |
4.93 |
1,070,550.00 |
| -4 (-20) |
4.74 |
186,000.00 |
| 32 (0) |
4.24 |
55,620.00 |
| 50 (10) |
3.81 |
32,100.00 |
| 68 (20) |
3.29 |
19,185.00 |
| 77 (25) |
3.00 |
15,000.00 |
| 86 (30) |
2.71 |
11,818.50 |
| 95 (35) |
2.42 |
9376.50 |
| 104 (40) |
2.14 |
7489.50 |
| 113 (45) |
1.88 |
6021.00 |
| 122 (50) |
1.64 |
4870.50 |
| 140 (60) |
1.23 |
3250.50 |
| 158 (70) |
0.91 |
2218.50 |
| 176 (80) |
0.67 |
1543.50 |
| 212 (100) |
0.37 |
789.75 |
| 248 (120) |
0.21 |
433.80 |
| 293 (145) |
0.11 |
220.95 |
FUEL TANK PRESSURE SENSOR OUTPUT PRESSURE VS VOLTAGE (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 TANK TEMPERATURE SENSOR RESISTANCE VS TEMPERATURE VS VOLTAGE (CNG)
| Temperature - °F (°C) |
Volts |
Ohms |
| -58 (-50) |
4.87 |
104,390 |
| -40 (-40) |
4.77 |
57,536 |
| -4 (-20) |
4.38 |
19,326 |
| 23 (-5) |
3.86 |
9311 |
| 32 (0) |
3.65 |
7407 |
| 41 (5) |
3.42 |
5933 |
| 50 (10) |
3.18 |
4764 |
| 59 (15) |
2.93 |
3881 |
| 68 (20) |
2.68 |
3167 |
| 77 (25) |
2.43 |
2600 |
| 86 (30) |
2.20 |
2148 |
| 95 (35) |
1.97 |
1784 |
| 104 (40) |
1.76 |
1489 |
| 113 (45) |
1.57 |
1249 |
| 122 (50) |
1.39 |
1052 |
| 140 (60) |
1.08 |
758 |
| 158 (70) |
0.84 |
556 |
| 176 (80) |
0.66 |
414 |
| 212 (100) |
0.40 |
240 |
| 248 (120) |
0.26 |
147 |
| 302 (150) |
0.14 |
77 |
SENSOR TEMPERATURE VS RESISTANCE (EXCEPT TRACKER)
| 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) |
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 |
SENSOR TEMPERATURE VS RESISTANCE (TRACKER)
| 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 |
MAP SENSOR VOLTAGE
| Throttle Position |
Volts |
| At Idle |
1.0-1.5 |
| Wide Open Throttle |
4.0-4.9 |
THROTTLE POSITION SENSOR VOLTAGE
| Throttle Position |
Volts |
| At Idle |
| Models Without Electronic Throttle Control |
0.4-0.9 |
| Models With Electronic Throttle Control |
| TP Sensor No. 1 |
4.8-4.3 |
| TP Sensor No. 2 |
0.4-0.9 |
| Wide Open Throttle |
| Models Without ElectronicThrottle Control |
Greater Than 4.0 |
| Models With Electronic Throttle Control |
| TP Sensor No. 1 |
Less Than 1.0 |
| TP Sensor No. 2 |
Greater Than 3.5 |