HEATER CORE INSPECTION
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.