Toyota Corolla Cross: Cooling System
On-vehicle Inspection
ON-VEHICLE INSPECTION
CAUTION / NOTICE / HINT
CAUTION:
Do not remove the reserve tank cap and air release valve while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.
PROCEDURE
1. INSPECT FOR COOLANT LEAK
CAUTION:
Do not remove the reserve tank cap and air release valve while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.
(a) Remove the reserve tank cap.
| (b) Add engine coolant to the FULL line of the radiator reserve tank assembly. |
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(c) Install a radiator cap tester.
(d) Warm up the engine.
(e) Pump the radiator cap tester to 122 kPa (1.2 kgf/cm2, 18 psi), and then check that the pressure does not drop.
- If the pressure drops, check the hoses, radiator assembly and engine water pump assembly for leaks.
- If there are no signs of external engine coolant leaks, check the heater core, cylinder block sub-assembly and cylinder head sub-assembly.
(f) Remove the radiator cap tester.
(g) Install the reserve tank cap.
2. INSPECT RADIATOR RESERVE TANK ENGINE COOLANT LEVEL
| (a) Check that the engine coolant level is between the LOW line and FULL line when the engine is cold. If the engine coolant level is low, check for leaks and add engine coolant to the FULL line. NOTICE:
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3. INSPECT ENGINE COOLANT QUALITY
CAUTION:
Do not remove the reserve tank cap and air release valve while the engine or radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.
(a) Remove the reserve tank cap.
(b) Check that there are no excessive deposits of rust or scale around the reserve tank cap and water filler hole. Also, the engine coolant should be free of oil.
If excessively dirty, clean the engine coolant passage and replace the engine coolant.
(c) Install the reserve tank cap.
READ NEXT:
Flow Shutting Valve
InspectionINSPECTION PROCEDURE
1. INSPECT FLOW SHUTTING VALVE (WATER VALVE) (a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
On-vehicle Inspection
ON-VEHICLE INSPECTION CAUTION / NOTICE / HINT
CAUTION: Do not remove the reserve tank cap and air release valve while the engine and radiator assembly are still hot. Pressurized, hot engine coolant
SEE MORE:
Parts Location
PARTS LOCATION
ILLUSTRATION
*1
BRAKE ACTUATOR ASSEMBLY
- SKID CONTROL ECU
*2
ECM
*3
NO. 1 ENGINE ROOM RELAY BLOCK
- ABS NO. 2 FUSE
*4
TCM
ILLUSTRATION
*1
PARKING
Blower Motor Circuit
DESCRIPTION The blower motor with fan sub-assembly is operated by signals from the air conditioning amplifier assembly. Blower motor speed signals are transmitted in accordance with changes in the duty ratio.
If the airflow volume is low or the blower speed cannot be changed, the following factors
