Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001HBGT
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 -           ]
Title: 2ZR-FXE (COOLING): THERMOSTAT: INSPECTION; 2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]

INSPECTION

PROCEDURE

1. INSPECT WATER INLET WITH THERMOSTAT SUB-ASSEMBLY

CAUTION:

  • Do not put your hands into the water that has been heated for the inspection.
  • Touching the heated water could result in burns.

(a) Immerse the water inlet with thermostat sub-assembly in water and then gradually heat the water.

(b) Check that the valve of the water inlet with thermostat sub-assembly opens at the specified temperature.

Standard Valve Opening Temperature:

80 to 84°C (176 to 183°F)

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

(c) Check the valve lift.

Standard Valve Lift:

Compression Spring Shape

Condition

Specified Condition

Tapered

95°C (203°F)

10 to 14 mm (0.394 to 0.551 in.)

Straight

8 mm (0.315 in.) or more

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

*A

Compression Spring Shape: Tapered

*B

Compression Spring Shape: Straight

*a

Valve Lift

*b

Compression Spring

(d) Check that the valve is fully closed when the water inlet with thermostat sub-assembly is at low temperatures (below 77°C (171°F)).

If it is not fully closed, replace the water inlet with thermostat sub-assembly.