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 specified otherwise, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with minimum 10-megohm input impedance.
DIFFERENTIAL PRESSURE FEEDBACK EGR (DPFE) SENSOR
| Psi | In. Hg | (1) Volts |
|---|
| 4.34 | 8.83 | 4.56 |
| 3.25 | 6.62 | 3.54 |
| 2.17 | 4.41 | 2.51 |
| 1.08 | 2.21 | 1.48 |
| 0 | 0 | 0.5 |
| (1) Voltage specs are calculated for VREF equaling 5 volts. Specs may differ by as much as 5 percent. See TESTS W/CODES - 5.0L article for further testing. |
| (1) | Voltage specs are calculated for VREF equaling 5 volts. Specs may differ by as much as 5 percent. See TESTS W/CODES - 5.0L article for further testing. |
DPFE SENSOR SPECIFICATIONS
ENGINE COOLANT TEMP (ECT), INTAKE AIR TEMP (IAT) &
TRANSMISSION FLUID TEMP (TFT) SENSORS
| Temperature: °F (°C) | (2) Volts | (2) Ohms |
|---|
| 50 (10) | 3.52 | 58,750 |
| 68 (20) | 3.06 | 37,300 |
| 86 (30) | 2.62 | 24,270 |
| 104 (40) | 2.16 | 16,150 |
| 122 (50) | 1.72 | 10,970 |
| 140 (60) | 1.35 | 7600 |
| 158 (70) | 1.04 | 5370 |
| 176 (80) | 0.80 | 3840 |
| 194 (90) | 0.61 | 2800 |
| 212 (100) | 0.46 | 2070 |
| 230 (110) | 0.36 | 1550 |
| (1) Measure between sensor terminals. (2) Values may differ by as much as 15 percent. |
| (1) | Measure between sensor terminals. |
| (2) | Values may differ by as much as 15 percent. |
ECT, IAT & TFT SENSOR SPECIFICATIONS (1)
HEATED OXYGEN SENSOR (HO2S)
| Condition | (1) Voltage |
|---|
| Rich | Increases |
| Lean | Decreases |
| (1) Measure between oxygen sensor connector and ground. Voltage should toggle above and below 0.45 volt when system in closed loop. See TESTS W/CODES - 5.0L article for terminal identification. |
| (1) | Measure between oxygen sensor connector and ground. Voltage should toggle above and below 0.45 volt when system in closed loop. See TESTS W/CODES - 5.0L article for terminal identification. |
MASS AIRFLOW (MAF) SENSOR
| Engine Condition (1) | (2) Volts |
|---|
| Idle | 0.8 |
| 20 MPH | 1.0 |
| 40 MPH | 1.7 |
| 60 MPH | 2.1 |
| (1) Engine at normal operating temperature. (2) Voltage may vary depending on vehicle load and temp. See TESTS W/CODES - 5.0L article for terminal ID. |
| (1) | Engine at normal operating temperature. |
| (2) | Voltage may vary depending on vehicle load and temp. See TESTS W/CODES - 5.0L article for terminal ID. |
MAF SENSOR SPECIFICATIONS
TRANSMISSION RANGE (TR) SENSOR
| Selector Position | (1) Ohms |
|---|
| Park | 3770-4607 |
| Reverse | 1304-1593 |
| Neutral | 660-807 |
| Overdrive | 361-442 |
| Second/Drive | 190-232 |
| First | 78-95 |
| (1) Values may differ by as much as 15 percent. Measure between Gray/Red and Light Blue/Yellow wires at TR sensor with transmission selector in specified position. |
| (1) | Values may differ by as much as 15 percent. Measure between Gray/Red and Light Blue/Yellow wires at TR sensor with transmission selector in specified position. |
THROTTLE POSITION (TP) SENSOR
| Throttle Angle | (1) Volts |
|---|
| 0° | 0.50 |
| 10° | 0.97 |
| 20° | 1.44 |
| 30° | 1.90 |
| 40° | 2.37 |
| 50° | 2.84 |
| 60° | 3.31 |
| 70° | 3.78 |
| 80° | 4.24 |
| (1) Voltage may differ by as much as 15 percent. See TESTS W/CODES - 5.0L article for terminal ID. |
| (1) | Voltage may differ by as much as 15 percent. See TESTS W/CODES - 5.0L article for terminal ID. |
