On-vehicle Inspection
ON-VEHICLE INSPECTION
CAUTION / NOTICE / HINT
CAUTION:
Do not remove the radiator cap sub-assembly 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 radiator cap sub-assembly 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 radiator cap sub-assembly.
(b) Fill the radiator assembly with engine coolant, and then install a radiator cap tester. |
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(c) Warm up the engine.
(d) Pump the radiator cap tester to 122 kPa (1.2 kgf/cm2, 18 psi), and then check that the pressure does not drop.
(e) Remove the radiator cap tester.
(f) Install the radiator cap sub-assembly.
2. INSPECT ENGINE COOLANT LEVEL IN RESERVOIR TANK
(a) Check that the engine coolant level is between the L line and F line when the engine is cold. If the engine coolant level is low, check for leaks and add engine coolant to the F line. NOTICE: Do not substitute plain water for engine coolant. |
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3. INSPECT ENGINE COOLANT QUALITY
CAUTION:
Do not remove the radiator cap sub-assembly 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 radiator cap sub-assembly.
(b) Check if there are any excessive deposits of rust or scale around the radiator cap sub-assembly and water filler hole. Also, the engine coolant should be free of oil.
If excessively dirty, replace the engine coolant.
(c) Install the radiator cap sub-assembly.
Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Ground (P011011). Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Battery or Open (P011015). Engine Coolant Temperature Sensor 1 Circuit
Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Ground (P011011) DESCRIPTION The intake air temperature sensor, mounted on the mass air flow meter sub-assembly, monitors the intake air temperature. The intake air temperature sensor has a built-in thermistor with a resistance that varies acco ...