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 may cause driveability problems.
Note. Perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance unless otherwise instructed in test procedure.
SENSOR RANGE CHARTS
| Pressure - psi (kPa) | Voltage |
|---|
| 2.9 (20) | .3 |
| 5.8 (40) | 1.5 |
| 8.7 (60) | 2.5 |
| 11.6 (80) | 3.5 |
| 14.5 (100) | 4.5 |
ATMOSPHERIC PRESSURE SENSOR VOLTAGE (C70, S70 & V70)
| Temperature - °F (°C) | Ohms |
|---|
| 32 (0) | 7300 |
| 68 (20) | 2800 |
| 176 (80) | 300 |
| 212 (100) | 150 |
COOLANT TEMPERATURE SENSOR RESISTANCE
| Application | Ohms |
|---|
| S90 & V90 (1) | 1000 |
| (1) Resistance is measured between terminals No. 1 and 3. |
| (1) | Resistance is measured between terminals No. 1 and 3. |
CO POTENTIOMETER RESISTANCE (S90 & V90)
| Application | Ohms |
|---|
| C70, S70 & V70 | 260-340 |
| S90 & V90 | 240-400 |
ENGINE SPEED (RPM) SENSOR RESISTANCE
| Application | Ohms |
|---|
| All Models | 15.6-16.2 |
| Application | Ohms |
|---|
| All Models (1) | 10-14 |
| (1) Resistance is measured between terminals No. 1 and 2, or No. 2 and 3. |
| (1) | Resistance is measured between terminals No. 1 and 2, or No. 2 and 3. |
IDLE AIR CONTROL VALVE (COIL) RESISTANCE
| Temperature - °F (°C) | Ohms |
|---|
| 68 (20) | 2500 |
INTAKE AIR TEMPERATURE RESISTANCE (C70, S70 & V70)
| Application | Ohms |
|---|
| S90 & V90 (1) | 2.5-4 |
| (1) Resistance is measured between terminals No. 2 and 3. |
| (1) | Resistance is measured between terminals No. 2 and 3. |
MASS AIRFLOW (MAF) SENSOR RESISTANCE (S90 & V90)
| Temperature - °F (°C) | Ohms |
|---|
| 14 (-10) | 2190-2270 |
| 32 (0) | 1390-1420 |
| 50 (10) | 890-930 |
| 68 (20) | 590-630 |
| 86 (30) | 400-430 |
| 104 (40) | 270-300 |
OUTSIDE TEMPERATURE SENSOR RESISTANCE (C70, S70 & V70)
| Temperature - °F (°C) | Ohms |
|---|
| C70, S70 & V70 Turbo (1) |
| 68 (20) | 1.5-2.5 |
| 660 (350) | 6-10 |
| C70, S70 & V70 Non-Turbo, & S90 & V90 (1) |
| 68 (20) | 3 |
| 660 (350) | 13 |
| (1) Resistance is measured between terminals No. 4 and 3. |
| (1) | Resistance is measured between terminals No. 4 and 3. |
OXYGEN SENSOR HEATER RESISTANCE
| Application | Ohms |
|---|
| C70, S70 & V70 (1) |
| Idle | 900-1100 |
| Full Load | 2300-2900 |
| S90 & V90 (1) |
| Idle | 1000 |
| Full Load | 2600 |
| (1) Resistance is measured between terminals No. 1 and 3. |
| (1) | Resistance is measured between terminals No. 1 and 3. |
THROTTLE POSITION SENSOR RESISTANCE
