Ford Corsar Repair Manual page 809

TROUBLE DIAGNOSES
l
Check coil side circuit of A/C
N.G.
relay.
Do approx. 12 volts exist be-
tween dual-pressure switch
harness terminal No.
@
and
body ground?
Trouble-shooting (Cont'd)
I
O.K.
~ual-pressure
Check voltage for thermo Disconnect dual-pressure switch
switch connector
control amp. harness connector.
Do approx. 12 volts exist be-
tween thermo control amp.
N .G.
body ground?
Ohmmeter
O.K.
Check power supply for thermo
B
O.K.
•
Therrno control amp.
Go to Preliminary Check.
connector
Check dual-pressure switch.
O.K.
Does continuity exist between
Voltmeter
N.G.
Check refrigerant.
O.K.
Connect manifold gauge, then
Replace thermo control amp.
check system pressure.
(Refer to AIC performance test.)
0 .K.
N .G.
leaks.
I
I
Dual-pressure swltch
connector
r
Replace dual-pressure switch.
'Q
Disconnect thermo control amp.
and dual-pressure switch harness
connectors.
Note:
I f the result i s N.G. after checking circuit continuity, repair harness or
connector.