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Home >> Toyota >> 2021 >> Corolla SE Apex >> Repair and Diagnosis >> Engine Mechanical >> Cooling Fan >> Engine Cooling Fan System (M20A-FKS) (W/ Cooling Fan Ecu) - Diagnostics & Circuit Tests >> COOLING FAN SYSTEM (w/ Cooling Fan ECU) >> Problem Symptoms Table [09/2022 - ] >> Problem Symptoms Table [09/2022 - ]

Problem Symptoms Table [09/2022 - ]

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COOLING FAN SYSTEM

Symptom Suspected Area Link
Cooling fans do not operate Engine coolant temperature sensor Refer to INSPECTION [06/2018 - ]
Cooling fan circuit Refer to Cooling Fan Circuit [09/2022 - ] 
Cooling fan motor Refer to ON-VEHICLE INSPECTION [09/2022 - ]
FAN NO. 1 relay Refer to ON-VEHICLE INSPECTION [09/2022 - ]
ECM Refer to REMOVAL [09/2022 - 11/2022] , or refer to REMOVAL [11/2022 - 03/2023] , or refer to REMOVAL [03/2023 - 09/2024] , or refer to REMOVAL [09/2024 - ]
Cooling fan ECU Refer to ON-VEHICLE INSPECTION [09/2022 - ]
Cooling fans do not stop Engine coolant temperature sensor Refer to INSPECTION [06/2018 - ]
Cooling fan circuit Refer to Cooling Fan Circuit [09/2022 - ] 
Cooling fan ECU Refer to ON-VEHICLE INSPECTION [09/2022 - ]
ECM Refer to REMOVAL [09/2022 - 11/2022] , or refer to REMOVAL [11/2022 - 03/2023] , or refer to REMOVAL [03/2023 - 09/2024] , or refer to REMOVAL [09/2024 - ]
Cooling fan speed does not change Cooling fan circuit Refer to Cooling Fan Circuit [09/2022 - ] 
ECM Refer to REMOVAL [09/2022 - 11/2022] , or refer to REMOVAL [11/2022 - 03/2023] , or refer to REMOVAL [03/2023 - 09/2024] , or refer to REMOVAL [09/2024 - ]
Cooling fan ECU Refer to ON-VEHICLE INSPECTION [09/2022 - ]