INTRODUCTION
Note. For component locations, refer to the appropriate E - THEORY/ OPERATION - GASOLINE or E - THEORY/ OPERATION - DIESEL article in this section.
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. Unless stated otherwise in test procedure, perform all resistance tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
DIESEL
Note. Information applies only to E300 diesel.
| Coolant Temperature | Ohms |
|---|
| 68°F (20°C) | 3100 |
| 104°F (40°C) | 315 |
| (1) Some models use a 4-pin sensor. Measure across 2 terminals diagonally. (Scheme 1) |
| (1) | Some models use a 4-pin sensor. Measure across 2 terminals diagonally. (Scheme 1) |
COOLANT TEMPERATURE SENSOR SPECIFICATIONS (1)
Scheme 1
| Fuel Temperature | Ohms |
|---|
| 68°F (20°C) | 2500 |
| 104°F (40°C) | 1170 |
| (1) Specifications may vary slightly. |
| (1) | Specifications may vary slightly. |
FUEL TEMPERATURE SENSOR SPECIFICATIONS (1)
| Intake Air Temperature | Ohms |
|---|
| 68°F (20°C) | 6000 |
| 104°F (40°C) | 2600 |
| (1) Specifications may vary slightly. |
| (1) | Specifications may vary slightly. |
INTAKE AIR TEMPERATURE SENSOR SPECIFICATIONS (1)
GASOLINE (ME-SFI)
| Coolant Temperature | (2) Ohms |
|---|
| 68°F (20°C) | 3100 |
| 176°F (80°C) | 315 |
| (1) Specifications may vary slightly. (2) Some models use a 4-pin sensor. Measure across 2 terminals diagonally. (Scheme 1) |
| (1) | Specifications may vary slightly. |
| (2) | Some models use a 4-pin sensor. Measure across 2 terminals diagonally. (Scheme 1) |
COOLANT TEMPERATURE SENSOR SPECIFICATIONS (2.3L & 3.2L) (1)
| Coolant Temperature | Ohms |
|---|
| 68°F (20°C) | 2500 |
| 176°F (80°C) | 325 |
| (1) Specifications may vary slightly. |
| (1) | Specifications may vary slightly. |
COOLANT TEMPERATURE SENSOR SPECIFICATIONS (4.2L & 5.0L) (1)
