Lexus ES manuals

Lexus ES: Inspection

INSPECTION

PROCEDURE

1. INSPECT WATER INLET WITH THERMOSTAT SUB-ASSEMBLY

(a) Check the valve opening.

HINT:

The valve opening temperature is inscribed on the water inlet with thermostat sub-assembly.

(1) Add 15 cc (0.9 cu. in.) of water to the water inlet with thermostat sub-assembly from the inlet pipe side.

*a

Inlet Pipe Side

*b

Valve Side

(2) Confirm that water does not flow out from the valve side of the water inlet with thermostat sub-assembly.

If water flows out from the valve side of the water inlet with thermostat sub-assembly, replace the water inlet with thermostat sub-assembly with a new one.

(3) Immerse the water inlet with thermostat sub-assembly in water that is between 92°C (198°F) and 96°C (205°F) for 5 minutes or more.

NOTICE:

  • Do not allow any water to come into contact with the connector of the water inlet with thermostat sub-assembly.
  • Make sure that the end of the inlet pipe of the water inlet with thermostat sub-assembly is not facing downward.
  • Make sure to immerse the water inlet with thermostat sub-assembly in the water as shown in the illustration.

*a

Connector

*b

Inlet Pipe

Temperature Sensor

(4) Leave the water inlet with thermostat sub-assembly at ambient temperature for 5 minutes so that the valve closes.

NOTICE:

Make sure that the end of the inlet pipe of the water inlet with thermostat sub-assembly is not facing downward.

*a

Inlet Pipe

(5) Check that the water that was added to the water inlet with thermostat sub-assembly has completely flowed out.

If the water that was added to the water inlet with thermostat sub-assembly has not completely flowed out, replace the water inlet with thermostat sub-assembly with a new one.

(b) Check the resistance of the temperature sensor.

(1) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 - 2

Always

10.6 to 14.2 Ω

If the result is not as specified, replace the water inlet with thermostat sub-assembly.

READ NEXT:

 Installation

INSTALLATION PROCEDURE 1. INSTALL WATER INLET WITH THERMOSTAT SUB-ASSEMBLY (a) Install a new gasket to the water inlet with thermostat sub-assembly. (b) Install the water inlet with thermostat sub-ass

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