Insufficient Cooling

INSUFFICIENT COOLING

Component Function Check

SYMPTOM: Insufficient cooling

INSPECTION FLOW

Step 1-8:

Step 8 (Continued)-13:

Performance Test









Performance Chart

Test Condition






Test Reading






Ambient Air Temperature-to-operating Pressure Table






Trouble diagnosis for Unusual Pressure
Whenever system's high and/or low side pressure is unusual, diagnose using a manifold gauge. The marker above the gauge scale in the following tables indicates the standard (usual) pressure range. Since the standard (usual) pressure, however, differs from vehicle to vehicle, refer to above table (Ambient air temperature-to-operating pressure table).

Both High- and Low-pressure Sides are Too High






High-pressure Side is Too High and Low-pressure Side is Too Low






High-pressure Side is Too Low and Low-pressure Side is Too High






Both High- and Low-pressure Sides are Too Low






Low-pressure Side Sometimes Becomes Negative






Low-pressure Side Becomes Negative