Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001H97W |
Model Year Start: 2020 |
Model: Corolla |
Prod Date Range: [01/2019 - 09/2022] |
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): Blower Motor does not Operate; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022] |
Blower Motor does not Operate
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DESCRIPTION
If air does not flow from the front registers after the blower switch on the air conditioning control assembly is operated, the following factors may be the cause.
Symptom
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Factor
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Blower motor does not operate at all
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(Air does not blow from registers)
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Air conditioning amplifier assembly malfunction
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Blower motor with fan sub-assembly malfunction
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Warm-up control
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Engine coolant temperature sensor malfunction
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Harness or connector
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PROCEDURE
1.
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CHECK AIR CONDITIONING SYSTEM (MANUAL MODE)
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(a) Turn off the AUTO switch, operate the blower switch and check that the blower motor with fan sub-assembly can be operated manually.
OK:
The blower motor with fan sub-assembly operates normally.
OK
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2.
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READ VALUE USING TECHSTREAM
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(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Data List.
(e) Read the Data List according to the display on the Techstream.
Powertrain > Engine > Data List
Tester Display
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Measurement Item
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Range
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Normal Condition
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Diagnostic Note
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Coolant Temperature
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Engine coolant temperature
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Min.: -40°C (-40°F), Max.: 140°C (284°F)
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75 to 100°C (167 to 212°F): After warming up
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This is the engine coolant temperature.
HINT:
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After warming up the engine, the engine coolant temperature will be 75 to 100°C (167 to 212°F).
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After a long soak, the engine coolant temperature, intake air temperature and ambient air temperature will be approximately equal.
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If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted.
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Check if the engine overheats if the value indicated is higher than 135°C (275°F).
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Powertrain > Engine > Data List
Tester Display
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Coolant Temperature
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OK:
After warming up the engine, the temperature value displayed is within the range specified in the normal condition column.
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