Toyota Yaris: Heating / Air Conditioning / Ambient Temperature Sensor
Components
COMPONENTS
ILLUSTRATION
*1 | THERMISTOR ASSEMBLY | - | - |
Removal
REMOVAL
PROCEDURE
1. REMOVE FRONT BUMPER ASSEMBLY
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2. REMOVE THERMISTOR ASSEMBLY
(b) Disconnect the connector to remove the thermistor assembly.
Inspection
INSPECTION
PROCEDURE
1. INSPECT THERMISTOR ASSEMBLY
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the table below. Standard resistance: Tester Connection | Condition | Specified Condition | A52-1 (SO-) - A52-2 (SO+) | 10°C (50°F) | 3.00 to 3.73 kΩ | A52-1 (SO-) - A52-2 (SO+) | 15°C (59°F) | 2.45 to 2.88 kΩ | A52-1 (SO-) - A52-2 (SO+) | 20°C (68°F) | 1.95 to 2.30 kΩ | A52-1 (SO-) - A52-2 (SO+) | 25°C (77°F) | 1.60 to 1.80 kΩ | A52-1 (SO-) - A52-2 (SO+) | 30°C (86°F) | 1.28 to 1.47 kΩ | A52-1 (SO-) - A52-2 (SO+) | 35°C (95°F) | 1.00 to 1.22 kΩ | A52-1 (SO-) - A52-2 (SO+) | 40°C (104°F) | 0.80 to 1.00 kΩ | A52-1 (SO-) - A52-2 (SO+) | 45°C (113°F) | 0.65 to 0.85 kΩ | A52-1 (SO-) - A52-2 (SO+) | 50°C (122°F) | 0.50 to 0.70 kΩ | A52-1 (SO-) - A52-2 (SO+) | 55°C (131°F) | 0.44 to 0.60 kΩ | A52-1 (SO-) - A52-2 (SO+) | 60°C (140°F) | 0.36 to 0.50 kΩ | NOTICE: -
Hold the sensor only by its connector. Touching the sensing portion may change the resistance value.
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When measuring, the sensor temperature must be the same as the ambient temperature.
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Use a thermometer to detect the ambient temperature of the installation area around the thermistor assembly.
HINT: As the temperature increases, the resistance decreases (see the graph). If the specified condition is not met, replace the thermistor assembly. |
| *a | Component without harness connected (Thermistor Assembly) | *b | Sensing Portion | *c | Resistance (kΩ) | *d | Temperature (°C (°F)) | *e | Allowable Range | | |
Installation
INSTALLATION
PROCEDURE
1. INSTALL THERMISTOR ASSEMBLY
(a) Connect the connector. | |
(b) Engage the clamp to install the thermistor assembly.
2. INSTALL FRONT BUMPER ASSEMBLY
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INSTALLATION PROCEDURE 1. TEMPORARILY INSTALL AIR CONDITIONER UNIT ASSEMBLY (a) Temporarily install the air conditioner unit assembly to the instrument panel reinforcement assembly with the 3 bolts...
Other information:
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HOW TO PROCEED WITH TROUBLESHOOTING OPERATION FLOW HINT: Perform troubleshooting in accordance with the procedure below. The following is an outline of basic troubleshooting procedure. Confirm the troubleshooting procedure for the circuit you are working on before beginning troubleshooting...
Categories
WARNING
Never allow a person to ride in the luggage compartment/trunk
Allowing a person to ride in the luggage compartment/trunk is
dangerous.
The person in the luggage compartment/trunk could be seriously injured or
killed during sudden braking or a collision.
Do not drive with the liftgate/trunk lid open
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