1. Inspect the heater core for damage, cracks, and water leakage.
If there is any malfunction, replace the heater core.
2. Visually inspect the fins for bending.
If there is any bending, use the end of a flathead screwdriver to straighten the fins.
3. Visually inspect the heater hose for deformation.
Repair with pliers if there is deformation. If there is any malfunction, replace the heater core.
Heater Core
Heater Hose Removal/InstallationOne Way Clutch [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
The one-way clutch operates in 1GR and suppresses the counterclockwise rotation
of the front internal gear (as viewed from torque converter side).
Construction
The one-way clutch consists of a mechanical diode-type one-way clutch, inner
plate, and outer pla ...
Evaporative Emission (Evap) Control System
Purpose, Outline
Prevents release of evaporative gas into the atmosphere.
The intake manifold vacuum introduces evaporative gas to the intake manifold
via the charcoal canister and the purge solenoid valve.
System Diagram
U.S.A. and CANADA
Except U.S.A. and CANADA
...
Tire Pressure Warning Alarm
Purpose
The tire pressure warning alarm warns the user that a tire pressure has decreased
or notifies the user that the tire pressure warning alarm has been reset.
Function
If the instrument cluster receives a tire pressure warning alarm request
signal sent from the D ...