Inspection Procedure

INSUFFICIENT HEATING

Inspection procedure


1. CHECK COOLING SYSTEM

1.Check engine coolant level and check for leakage. Refer to "Inspection" Inspection.
2.Check radiator cap. Refer to "RADIATOR CAP : Inspection" Service and Repair.
3.Check water flow sounds of engine coolant. Refer to "Refilling" Refilling Engine Coolant.
Is the inspection result normal?
YES- GO TO 2.
NO- Refill the engine coolant and repair or replace the parts according to the inspection results.

2. CHECK OPERATION

1.Turn temperature control dial to full hot position after warming up the engine.
2.Check that warm air blows from outlets.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 3.

3. CHECK AIR MIX DOOR MOTOR

Check the air mix door motor. Refer to "Component Function Check" Manual Air Conditioning.
Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace parts according to the inspection results.

4. CHECK AIR LEAKAGE FROM DUCT

Check duct and nozzle, etc. of A/C system for air leakage.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace parts according to the inspection results.

5. CHECK HEATER HOSE INSTALLATION CONDITION

Check the heater hose installation condition visually (for twist, crush, etc.).
Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace parts according to the inspection results.

6. CHECK TEMPERATURE OF HEATER HOSE

1.Check the temperature of inlet hose and outlet hose of heater core.
2.Check that the inlet side of heater core is hot and the outlet side is slightly lower than/almost equal to the inlet side.

CAUTION:
The temperature inspection should be performed in a short time because the engine coolant temperature is too hot.
Is the inspection result normal?
YES- GO TO 7.
NO- Replace the heater core after performing the procedures after the cooling system inspection again. GO TO 1.

7. REPLACE HEATER CORE

Replace the heater core. Refer to "Exploded View" Exploded View.
Are the symptoms solved?
YES- INSPECTION END
NO- Perform the procedures after the cooling system inspection again. GO TO 1.