Ford 2003 Mustang Workshop Manual page 3075

E2 CHECK FOR NORMAL DISCHARGE PRESSURE
Use the recorded data from the refrigerant system tests
to plot a vertical line for ambient temperature and a
horizontal line for compressor discharge (high) pressure.
Is the intersection of the two lines within the upper
and lower limits?
E3 EVALUATE THE SYSTEM LOW PRESSURE
PERFORMANCE
Use the recorded data from the refrigerant system tests
to plot a vertical line for ambient temperature and a
horizontal line for compressor suction (low) pressure.
Is the intersection of the two lines within the upper
and lower limits?
E4 CHECK FOR A SLOW OR CONTINUOUS RUN A/C
CLUTCH CYCLE RATE
Use the recorded data from the refrigerant system tests
to plot a vertical line for ambient temperature and a
horizontal line for total A/C clutch cycle time (time ON
plus time OFF) in seconds.
Is the intersection of the two lines above the upper
limit?
E5 CHECK FOR A LONG OR CONTINUOUS A/C CLUTCH
OFF TIME
Use the recorded data from the refrigerant system tests
Yes
GO to E3 .
No
GO to E8 .
Yes
GO to E4 .
No
GO to E6 .
Yes
GO to E5 .
No
INSTALL a new A/C
evaporator core due to a
partially restricted or plugged
condition. REFER to Section
412-02 . TEST the system for
normal operation.
Yes