 |
abs0zw00000268
THERMISTOR INSPECTION
id074000830400
Without Heater
1. Disconnect the negative battery cable.
2. Remove the cooling unit. (See COOLING UNIT REMOVAL/INSTALLATION.)
3. Remove the thermistor. (See COOLING UNIT DISASSEMBLY/ASSEMBLY.)
4. Connect the negative battery cable.
5. Connect the thermistor connector to the wiring harness connector.
6. Turn the ignition switch to on position.
7. Turn the A/C switch on.
8. Turn the fan switch on.
9. Immerse the sensor part of thermistor in a container of ice water.
10. Verify that magnetic clutch operate as shown below.
|
Water temperature |
Differential |
Magnetic clutch |
|---|---|---|
|
0—3°C
{32—37°F}
|
3—5°C
{38—41°F}
|
OFF
|
|
13—17°C
{34—62°F}
|
2—6°C
{36—42°F}
|
OFF
|
With Heater
To determine if the switch is functioning
1. Remove the glove compartment. (See GLOVE COMPARTMENT REMOVAL/INSTALLATION.)
2. Start the engine.
3. Turn the fan switch on.
4. Turn the A/C switch on.
5. Connect the positive (+) probe of the voltmeter to terminal B of the thermistor connector and the negative (-) probe to terminal C. (The wiring harness connector must be connected to the thermistor connector.)
6. Measure the voltage as shown below.
|
Magnetic clutch |
Voltage (V) |
|---|---|
|
On
|
B+
|
|
Off
|
0
|
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7. If not as specified, inspect on/off points of the thermistor.
To inspect on/off points of the thermistor
1. Disconnect the negative battery cable.
2. Remove the cooling unit. (See COOLING UNIT REMOVAL/INSTALLATION.)
3. Remove the thermistor. (See COOLING UNIT DISASSEMBLY/ASSEMBLY.)
4. Connect the negative battery cable.
5. Connect the thermistor connector to the wiring harness connector.
6. Turn the engine switch to ON position.
7. Turn the A/C switch on.
8. Turn the fan switch on.
9. Immerse the sensor part of thermistor in a container of ice water.
10. Connect the positive (+) probe of the voltmeter to terminal B of the thermistor connector and the negative (-) probe to terminal C.
11. Measure the voltage as shown below.
|
Water temperature |
Voltage (V) |
|---|---|
|
3 °C {37 °F} or more
|
B+
|
|
1 °C {34 °F} or less
|
0
|
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12. If not as specified, replace the thermistor. (See COOLING UNIT DISASSEMBLY/ASSEMBLY.)