Can a vacuum be pulled on the function selector switch vacuum source line?
selector switch vacuum source line. TEST
the system for normal operation.
No
GO to
H9
.
H9 CHECK THE FUNCTION SELECTOR SWITCH VACUUM SOURCE LINE FOR LEAKS
Plug the function selector switch vacuum source line at the function selector switch connection.
Leak test the function selector switch vacuum source line using the vacuum pump.
Does the function selector switch vacuum source line leak?
Yes
REPAIR or INSTALL a new function
selector switch vacuum source line. TEST
the system for normal operation.
No
INSTALL a new function selector switch
(19B888). REFER to
Section 412-04
. TEST
the system for normal operation.
H10 CHECK THE FUNCTION SELECTOR SWITCH FOR BLOCKAGE
Disconnect: Function Selector Switch Vacuum Harness.
Connect a vacuum pump to the function selector switch vacuum supply port and try to pull a vacuum in each function selector
switch position. If the vacuum pump can pull and hold a vacuum, the switch is plugged. If the vacuum pump pulls a vacuum
that slowly decays, the hose is restricted.
Is the switch plugged or restricted?
Yes
INSTALL a new function selector switch
(19B888). REFER to
Section 412-04
. TEST
the system for normal operation.
No
GO to
H11
.
H11 LEAK TEST THE FUNCTION SELECTOR SWITCH
Connect a vacuum pump to the function selector switch vacuum supply port and plug each control port.
At each function selector switch position apply 51 kPa (15 in-Hg) of vacuum.
Does the vacuum drop exceed 3.37 kPa (1 in-Hg) per minute?
Yes
INSTALL a new function selector switch
(19B888). REFER to
Section 412-04
. TEST
the system for normal operation.
No
GO to
H12
.
H12 CHECK THE VACUUM HOSE
Disconnect the suspect hose.
Connect a vacuum pump to each hose and attempt to pull and hold a vacuum.
Yes
GO to
H13
.
No
GO to
H14
.
Page 22 of 47
2003 Taurus/Sable Workshop Manual
11/22/2011
http://www.fordtechservice.dealerconnection.com/pubs/content/~WS3H/~MUS~LEN/19/...
