Section 130 (Engine Controls - Sensor Operating Range Charts): Introduction
WARNING: This page does not describe the selected car, but rather 35 other vehicles, including the 2002 Pontiac Montana, 2002 Pontiac Aztek, 2002 Oldsmobile Silhouette, 2002 Oldsmobile Bravada, and 2002 GMC Yukon XL. 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 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 |