Toyota Corolla Cross: Problem Symptoms Table
Toyota Corolla Cross (2022-2025) Service Manual / Engine & Hybrid System / M20a-fxs (cooling) / Cooling Fan System / Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses related to this system before inspecting the suspected areas below.
|
Symptom | Suspected Area |
Link |
|---|---|---|
| Cooling fans do not operate |
Engine coolant temperature sensor |
- |
| Cooling fan motor LH |
| |
|
Cooling fan motor RH |
| |
|
FAN NO. 1 relay |
| |
|
FAN NO. 2 relay |
| |
|
FAN NO. 3 relay |
| |
|
Cooling fan circuit |
| |
|
ECM | - | |
|
Cooling fans do not stop (continue to operate) |
Engine coolant temperature sensor |
- |
| Cooling fan circuit |
| |
|
FAN NO. 1 relay |
| |
|
FAN NO. 2 relay |
| |
|
FAN NO. 3 relay |
| |
|
Cooling fan motor LH |
| |
|
Cooling fan motor RH |
| |
|
ECM | - | |
|
Cooling fans speed does not change | FAN NO. 2 relay |
|
|
Cooling fan circuit |
| |
|
ECM | - |
.gif)
READ NEXT:
On-vehicle Inspection
ON-VEHICLE INSPECTION CAUTION / NOTICE / HINT
CAUTION:
When working near the engine room while the engine has started or the power source mode is ignition switch to ON, do not touch the rotating
Cooling Fan Circuit
DESCRIPTION The ECM turns on or off the fan relays using signals calculated from the engine coolant temperature, air conditioning switch (on/off), air conditioning refrigerant pressure, engine speed a
Cooling System
On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE
1. INSPECT FOR COOLANT LEAK (for Engine)
CAUTION:
When engine assembly and radiator assembly are hot, do not remove the radiator cap sub-as
SEE MORE:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column of the
table. Check each symptom
Terminals Of Ecu
TERMINALS OF ECU
REAR TELEVISION CAMERA ASSEMBLY
(a) Disconnect the rear television camera assembly connector.
(b) Measure the voltage on the wire harness side connector according
to the value(s) in the table below.
Terminal No. (Symbol)
Terminal Description
© 2020-2025 Copyright www.tcorollacross.com
