Lexus ES: Cooling System
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.
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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 103 kPa (1.1 kgf/cm2, 15 psi), and then check that the pressure does not drop.
- If the pressure drops, check the hoses, radiator assembly and engine water pump assembly (water inlet housing) 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.
(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.
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Inspection
INSPECTION PROCEDURE 1. INSPECT FLOW SHUTTING VALVE (NO. 1 WATER BY-PASS HOSE) (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Con
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Installation
INSTALLATION PROCEDURE 1. INSTALL TRANSMISSION FLOOR SHIFT ASSEMBLY (a) Engage the clamp to connect the wire harness to the transmission floor shift assembly. (b) Connect the shift lock control ECU connector. (c) Engage the clamp to connect the wire harness to the transmission floor shift assembly.
Airbag Signal Signal Plausibility Failure (B15C464)
DESCRIPTION If the DCM (telematics transceiver) detects an error in communication between the DCM (telematics transceiver) and the airbag ECU assembly as a result of the DCM (telematics transceiver) self check, this DTC will be set. DTC No. Detection Item DTC Detection Condition Trouble Are
