INTRODUCTION
Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a diagnostic trouble code, but it may cause driveability problems.
Note. Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
Land Cruiser & Tundra 4.7L V8
For accelerator pedal position sensor testing, see THROTTLE BODY under IDLE CONTROL SYSTEM in SYSTEM & COMPONENT TESTING - V6 & V8 article.
AIR/FUEL SENSOR
Note. Air/Fuel (A/F) sensor may also be referred to as Air/Fuel (A/F) ratio sensor.
Avalon, Camry 2.2L 4-Cyl. CNG Models, Camry 2.2L 4-Cyl. Gasoline Models With Calif. Emissions, Camry 3.0L V6 Calif. Emission Vehicles, Camry Solara 2.2L 4-Cyl. Calif. Emission Vehicles, Camry Solara 3.0L V6 Calif. Emission Vehicles, RAV4 Calif. Emission Vehicles, Sienna Calif. Emission Vehicles, Tacoma 2.4L 4-Cyl. Calif. Emission Vehicles, Tacoma 2.7L 4-Cyl. Calif. Emission Vehicles, Tacoma 3.4L V6 Calif. Emission Vehicles, Tundra 3.4L V6 Calif. Emission Vehicles, 4Runner 2.7L 4-Cyl. Calif. Emission Vehicles & 4Runner 3.4L V6 Calif. Emission Vehicles
For Air/Fuel (A/F) sensor testing, see ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article.
AIRFLOW METER
Note. Airflow meter may be referred to as Mass Airflow (MAF) meter.
Avalon, Camry 3.0L V6, Camry Solara 3.0L V6, Celica, Corolla, ECHO, Land Cruiser, Sienna, Tacoma, Tundra & 4Runner
For airflow meter terminal identification and testing, see ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article.
| Application & Temperature | (1) Ohms | ||
|---|---|---|---|
| Avalon | |||
| 4°F (-20°C) | 13,600-18,400 | ||
| 68°F (20°C) | 2210-2690 | ||
| 140°F (60°C) | 490-670 | ||
| Camry V6, Camry Solara V6 & Sienna | |||
| 4°F (-20°C) | 14,600-17,800 | ||
| 68°F (20°C) | 2210-2690 | ||
| 140°F (60°C) | 290-350 | ||
| Celica & ECHO | |||
| 4°F (-20°C) | 13,600-18,400 | ||
| 68°F (20°C) | 2210-2690 | ||
| 140°F (60°C) | 490-670 | ||
| Corolla | |||
| 4°F (-20°C) | 13,600-18,400 | ||
| 68°F (20°C) | 2200-2700 | ||
| 140°F (60°C) | 500-700 | ||
| Land Cruiser & Tundra V8 | |||
| 4°F (-20°C) | 12,500-16,900 | ||
| 68°F (20°C) | 2190-2670 | ||
| 140°F (60°C) | 500-680 | ||
| Tacoma & 4Runner | |||
| 4-Cylinder | |||
| 4°F (-20°C) | 10,000-20,000 | ||
| 32°F (0°C) | 4000-7000 | ||
| 68°F (20°C) | 2000-3000 | ||
| 104°F (40°C) | 900-1300 | ||
| 140°F (60°C) | 400-700 | ||
| 176°F (80°C) | 200-400 | ||
| V6 | |||
| 4°F (-20°C) | 13,600-18,400 | ||
| 68°F (20°C) | 2200-2700 | ||
| 140°F (60°C) | 500-700 | ||
| Tundra V6 | |||
| 4°F (-20°C) | 13,600-18,400 | ||
| 68°F (20°C) | 2200-2700 | ||
| 140°F (60°C) | 500-700 | ||
| (1) Measure resistance between terminals E2 and THA (component side). For terminal Identification, see WIRING DIAGRAMS article. | |||
| (1) | Measure resistance between terminals E2 and THA (component side). For terminal Identification, see WIRING DIAGRAMS article. |
AIRFLOW METER RESISTANCE
CAMSHAFT POSITION SENSOR
For camshaft position sensor testing, see appropriate IGNITION SYSTEMS in appropriate BASIC DIAGNOSTIC PROCEDURES article.
| Application | Ohms | |||
|---|---|---|---|---|
| Avalon | ||||
| Cold (1) | 835-1400 | |||
| Hot (2) | 1060-1645 | |||
| Camry & Camry Solara | ||||
| 4-Cylinder | ||||
| Cold (1) | 835-1400 | |||
| Hot (2) | 1060-1645 | |||
| V6 | ||||
| Denso Sensor (3) | ||||
| Cold (1) | 835-1400 | |||
| Hot (2) | 1060-1645 | |||
| Wabash Sensor (3) | ||||
| Cold (1) | 1690-2560 | |||
| Hot (2) | 2145-3010 | |||
| Celica, Corolla & RAV4 | ||||
| Cold (1) | 835-1400 | |||
| Hot (2) | 1060-1645 | |||
| ECHO | ||||
| Cold (1) | 1630-2740 | |||
| Hot (2) | 2065-3225 | |||
| Land Cruiser, Tacoma, Tundra & 4Runner | ||||
| Cold (1) | 835-1400 | |||
| Hot (2) | 1060-1645 | |||
| Sienna | ||||
| Denso Sensor (3) | ||||
| Cold (1) | 835-1400 | |||
| Hot (2) | 1060-1645 | |||
| Wabash Sensor (3) | ||||
| Cold (1) | 1690-2560 | |||
| Hot (2) | 2145-3010 | |||
| (1) Cold is with temperature of 14-122°F (-10-50°C). (2) Hot is with temperature of 122-212°F (50-100°C). (3) This is manufacturer of camshaft position sensor. | ||||
| (1) | Cold is with temperature of 14-122°F (-10-50°C). |
| (2) | Hot is with temperature of 122-212°F (50-100°C). |
| (3) | This is manufacturer of camshaft position sensor. |
CAMSHAFT POSITION SENSOR RESISTANCE
CRANKSHAFT POSITION SENSOR
For crankshaft position sensor testing, see appropriate IGNITION SYSTEMS in appropriate BASIC DIAGNOSTIC PROCEDURES article.
| Application | Ohms | ||
|---|---|---|---|
| Avalon, Celica & Corolla | |||
| Cold (1) | 1630-2740 | ||
| Hot (2) | 2065-3225 | ||
| Camry & Camry Solara | |||
| 4-Cylinder | |||
| Cold (1) | 985-1600 | ||
| Hot (2) | 1265-1890 | ||
| V6 | |||
| Cold (1) | 1630-2740 | ||
| Hot (2) | 2065-3225 | ||
| ECHO & RAV4 | |||
| Cold (1) | 985-1600 | ||
| Hot (2) | 1265-1890 | ||
| Land Cruiser, Sienna, Tacoma & 4Runner | |||
| Cold (1) | 1630-2740 | ||
| Hot (2) | 2065-3225 | ||
| (1) Cold is with temperature of 14-122°F (-10-50°C). (2) Hot is with temperature of 122-212°F (50-100°C). | |||
| (1) | Cold is with temperature of 14-122°F (-10-50°C). |
| (2) | Hot is with temperature of 122-212°F (50-100°C). |
CRANKSHAFT POSITION SENSOR RESISTANCE (4-CYLINDER)
Camry 3.0L V6, Camry Solara 3.0L V6, Tacoma 2.4L 4-Cyl. Except Calif. Emission Vehicles, Tacoma 2.7L 4-Cyl. & 4Runner 2.7L 4-Cyl.
For EGR gas temperature sensor testing, see ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article.
| Temperature - °F (°C) | Ohms |
|---|---|
| 122 (50) | 64,000-97,000 |
| 212 (100) | 11,000-16,000 |
| 302 (150) | 2000-4000 |
EGR GAS TEMPERATURE SENSOR RESISTANCE
Camry 3.0L V6 & Camry Solara 3.0L V6
For testing of EGR position sensor, see ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING - V6 & V8 article.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR
For engine coolant temperature sensor location, see ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article. Using ohmmeter, check resistance between electrical terminals on engine coolant temperature sensor. Ensure resistance is within specification in relation to specified temperature. (Scheme 1)
Scheme 1
FUEL PIPE FUEL PRESSURE SENSOR
Note. Fuel pipe fuel pressure sensor may also be referred to as fuel pressure sensor (fuel pipe). Manufacturer does not provide individual component testing for fuel pipe fuel pressure sensor. Manufacturer lists testing procedure for supply voltage and output voltage for fuel pipe fuel pressure sensor.
Camry CNG Models
For fuel pipe fuel pressure sensor testing, see ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING - 4-CYLINDER article.
FUEL RAIL FUEL PRESSURE SENSOR
Note. Fuel rail fuel pressure sensor may also be referred to as delivery pipe fuel pressure sensor or fuel pressure sensor (delivery pipe). Manufacturer does not provide individual component testing for fuel rail fuel pressure sensor. Manufacturer lists testing procedure for supply voltage and output voltage for fuel rail fuel pressure sensor.
For fuel rail fuel pressure sensor testing, see ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING - 4-CYLINDER article.
FUEL RAIL FUEL TEMPERATURE SENSOR (CAMRY CNG)
Note. Fuel rail fuel temperature sensor may also be referred to as delivery pipe fuel temperature sensor or fuel temperature sensor (delivery pipe).
| Temperature - °F (°C) | Ohms |
|---|---|
| 4 (-20) | 13,900-16,300 |
| 68 (20) | 2320-2590 |
| 176 (80) | 310-326 |
FUEL RAIL FUEL TEMPERATURE SENSOR RESISTANCE
FUEL TANK FUEL TEMPERATURE SENSOR (CAMRY CNG)
Note. Fuel tank fuel temperature sensor may also be referred to as fuel temperature sensor (fuel tank).
| Temperature - °F (°C) | Ohms |
|---|---|
| 22 (-30) | 80,000-100,000 |
| 77 (25) | 4800-5200 |
| 104 (40) | 2510-2810 |
| 212 (100) | 300-370 |
FUEL TANK FUEL TEMPERATURE SENSOR RESISTANCE
HEATED OXYGEN SENSOR
For heated oxygen sensor application and sensor testing, see ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article.
Camry 2.2L 4-Cyl. CNG & Gasoline Models, Camry Solara 2.2L 4-Cyl. & RAV4
For intake air temperature sensor testing, see ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING - 4-CYLINDER article. Ensure resistance is within specification in relation to specified temperature. (Scheme 1)
Intake air temperature sensor is incorporated in to airflow meter. See AIRFLOW METER under ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article.
KNOCK SENSOR
For knock sensor testing, see ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article.
For MAP sensor testing, see ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING - 4-CYLINDER article.
ECHO
| Temperature - °F (°C) | Ohms |
|---|---|
| 77 (25) | 4800-5200 |
| 104 (40) | 2550-2850 |
| 212 (100) | 260-340 |
PTC HEATER RESISTANCE
THROTTLE POSITION (TP) SENSOR
For terminal identification and testing procedures, see ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article.
Avalon, Camry, Camry Solara, Celica, Corolla, ECHO, RAV4, Sienna, Tacoma, Tundra 3.4L V6 & 4Runner
| Application | Throttle Position | ECM Terminals | Ohms |
|---|---|---|---|
| Camry CNG & Gasoline Models, & Camry Solara (1) | Fully Closed | VTA & E2 | 200-5700 |
| Fully Open | VTA & E2 | 2000-10,200 | |
| VC & E2 | 2500-5900 | ||
| Celica, Corolla & ECHO | Fully Closed | VTA & E2 | 200-5700 |
| Fully Open | VTA & E2 | 2000-10,200 | |
| VC & E2 | 2500-5900 | ||
| RAV4, Tacoma & 4Runner (1) | Fully Closed | VTA & E2 | 200-5700 |
| Fully Open | VTA & E2 | 2000-10,200 | |
| VC & E2 | 2500-5900 | ||
| (1) Apply vacuum to throttle opener before checking TP sensor. | |||
| (1) | Apply vacuum to throttle opener before checking TP sensor. |
THROTTLE POSITION SENSOR RESISTANCE (4-CYLINDER)
| Application | Throttle Position | ECM Terminals | Ohms |
|---|---|---|---|
| Avalon, Camry, Camry Solara & Sienna | Fully Closed | VTA & E2 | 200-6300 |
| Fully Open | VTA & E2 | 2000-10,200 | |
| VC & E2 | 2500-5900 | ||
| Tacoma & Tundra 3.4L V6 | Fully Closed | VTA & E2 | 200-5700 |
| Fully Open | VTA & E2 | 2000-10,200 | |
| VC & E2 | 2500-5900 | ||
| 4Runner | Fully Closed | VTA & E2 | 280-6400 |
| Fully Open | VTA & E2 | 2000-11,600 | |
| VC & E2 | 2700-7700 | ||
| (1) Apply vacuum to throttle opener before checking TP sensor. | |||
| (1) | Apply vacuum to throttle opener before checking TP sensor. |
THROTTLE POSITION SENSOR RESISTANCE (V6 & V8) (1)
For testing of throttle control motor, See THROTTLE BODY under IDLES CONTROL SYSTEM in SYSTEM & COMPONENT TESTING - V6 & V8 article.
VAPOR PRESSURE SENSOR
For vapor pressure sensor testing, see ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article.
VARIABLE VALVE TIMING (VVT) SENSOR
Note. VVT sensor may also be referred to as camshaft position sensor.
Avalon, Celica, Corolla & ECHO
For VVT sensor testing, see CAMSHAFT POSITION SENSOR RESISTANCE under IGNITION SYSTEMS in appropriate BASIC DIAGNOSTIC PROCEDURES article.
VEHICLE SPEED SENSOR
For vehicle speed sensor testing, see ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article.