Initial Inspection and Diagnostic Overview

1. Verify the customer concern.

2. WARNING: Never remove the radiator cap under any conditions while the engine is operating. Failure to follow these instructions could result in personal injury and/or damage to the cooling system or engine. To avoid having scalding hot coolant or steam blow out of the radiator, use extreme care when removing the radiator cap from a hot radiator. Wait until the engine has cooled, then wrap a thick cloth around the radiator cap and turn it slowly to the first stop. Step back while the pressure is released from the cooling system. When you are certain all the pressure has been released, press down on the radiator cap (with a cloth), turn and remove

Visual Inspection Char:

Visually inspect for obvious signs of mechanical and electrical damage.
3. If the concern is not visually evident, verify the symptom and refer to the Symptom Chart.Symptom Related Diagnostic Procedures