Insufficient Cooling (Performance Test)
TROUBLE DIAGNOSIS PROCEDURE FOR INSUFFICIENT COOLINGSYMPTOM:
- Insufficient cooling
INSPECTION FLOW
Part 1 Of 2:
Part 2 Of 2:
PERFORMANCE TEST DIAGNOSES
PERFORMANCE CHART
Test Condition
Testing must be performed as follows:
Test Reading
Recirculating-to-discharge Air Temperature Table
Ambient Air Temperature-to-operating Pressure Table
TROUBLE DIAGNOSES FOR ABNORMAL PRESSURE
Whenever system's high and/or low side pressure is abnormal, diagnose using a manifold gauge. The marker above the gauge scale in the following tabies indicates the standard (normal) pressure range. Since the standard (normal) pressure, however, differs from vehicle to vehicle, refer to ("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.