Mass Airflow (MAF) Sensor
Information is not available from manufacturer. However, this article contains specifications for intake air temperature sensor, which is a part of the mass airflow sensor. See INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE table.
All Other Sensors
See ENGINE SENSORS & SWITCHES in SYSTEM/COMPONENT TESTS article.
| Application | Ohms |
|---|
| Cold (1) | 835-1400 |
| Hot (2) | 1060-1645 |
| (1) Sensor temperature of 14-122°F (-10-50°C). (2) Sensor temperature of 123-212°F (51-100°C). |
| (1) | Sensor temperature of 14-122°F (-10-50°C). |
| (2) | Sensor temperature of 123-212°F (51-100°C). |
CAMSHAFT SENSOR RESISTANCE
| Application | Ohms |
|---|
| ES300 |
| Cold (1) | 1630-2740 |
| Hot (2) | 2060-3225 |
| (1) Sensor temperature of 14-122°F (-10-50°C). (2) Sensor temperature of 123-212°F (51-100°C). |
| (1) | Sensor temperature of 14-122°F (-10-50°C). |
| (2) | Sensor temperature of 123-212°F (51-100°C). |
CRANKSHAFT SENSOR RESISTANCE
| Temp. °F (°C) | Ohms |
|---|
| 4° (-20) | 10,000-20,000 |
| 32 (0) | 4000-7000 |
| 68 (20) | 2000-3000 |
| 104 (40) | 900-1300 |
| 140 (60) | 400-700 |
| 176 (80) | 200-400 |
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE
| Temp. °F (°C) | Ohms |
|---|
| 122 (50) | 64,000-97,000 |
| 212 (100) | 11,000-16,000 |
| 302 (150) | 2000-4000 |
EGR GAS TEMPERATURE SENSOR RESISTANCE
Note. Intake Air Temperature (IAT) sensor is part of volume airflow sensor (mass airflow sensor on ES300).
| Ambient Temp. °F (°C) | Ohms |
|---|
| 4 (-20) | 10,000-20,000 |
| 32 (0) | 4000-7000 |
| 68 (20) | 2000-3000 |
| 104 (40) | 900-1300 |
| 140 (60) | 400-700 |
| 176 (80) | 200-400 |
| (1) Measure resistance between terminals THA and E2 of MAF sensor. |
| (1) | Measure resistance between terminals THA and E2 of MAF sensor. |
INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE (1)
| Application | Ohms |
|---|
| ES300 | 17-28.5 |
| (1) Measure resistance between terminal B1 and terminals S1 and S3. Measure resistance between terminal B2 and terminals S2 and S4. |
| (1) | Measure resistance between terminal B1 and terminals S1 and S3. Measure resistance between terminal B2 and terminals S2 and S4. |
IDLE AIR CONTROL (IAC) VALVE RESISTANCE (1)
| Terminal | Ohms |
|---|
| Terminal To Sensor Body | (1) Infinity (No Continuity) |
| (1) Replace sensor if continuity exists. |
| (1) | Replace sensor if continuity exists. |
| Application | Ohms @ 68°F (20°C) |
|---|
| ES300 | 11-16 |
| (1) Measure resistance between terminals +B and HT of oxygen sensor 4-pin connector. (Scheme 1) |
| (1) | Measure resistance between terminals +B and HT of oxygen sensor 4-pin connector. (Scheme 1) |
OXYGEN SENSOR HEATER RESISTANCE (1)
Scheme 1
