Lexus NX: Battery Thermometer Sensor
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT THERMISTOR ASSEMBLY
| (a) Disconnect the thermistor assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 1 - 2 | 10°C (50°F) | 3.00 to 3.73 kΩ |
| 1 - 2 | 15°C (59°F) | 2.45 to 2.88 kΩ |
| 1 - 2 | 20°C (68°F) | 1.95 to 2.30 kΩ |
| 1 - 2 | 25°C (77°F) | 1.60 to 1.80 kΩ |
| 1 - 2 | 30°C (86°F) | 1.28 to 1.47 kΩ |
| 1 - 2 | 35°C (95°F) | 1.00 to 1.22 kΩ |
| 1 - 2 | 40°C (104°F) | 0.80 to 1.00 kΩ |
| 1 - 2 | 45°C (113°F) | 0.65 to 0.85 kΩ |
| 1 - 2 | 50°C (122°F) | 0.50 to 0.70 kΩ |
| 1 - 2 | 55°C (131°F) | 0.44 to 0.60 kΩ |
| 1 - 2 | 60°C (140°F) | 0.36 to 0.50 kΩ |
NOTICE:
- Hold the sensor only by its connector. Touching the sensor may change the resistance value.
- When measuring, the sensor temperature must be the same as the ambient temperature.
HINT:
As the temperature increases, the resistance decreases (see the graph).
If the resistance is not as specified, replace the thermistor assembly.
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Precaution
PRECAUTION CAUTION:
Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated g
System Diagram
SYSTEM DIAGRAM
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Removal
REMOVAL PROCEDURE 1. PRECAUTION Click here 2. REMOVE FRONT BUMPER COVER (a) for Sport Pacakge: Click here (b) except Sport Pacakge: Click here 3. REMOVE NO. 3 ENGINE ROOM WIRE (a) for Sport Pacakge: Click here (b) except Sport Pacakge: Click here 4. REMOVE FRONT CORNER ULTRASONIC SENSOR
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE:
Recognition code registration is necessary when replacing the main body ECU (multiplex network body ECU).
If the main body ECU (multiplex network body ECU) is replaced, refer to Registration.
When replacing the combination meter assembly, always replace it with
