Monitor the GEM PID 4WDSGEM.
Place the mode switch in the 2H position.
Does the GEM PID indicate 2WD?
Yes
GO to
A9
.
No
GO to
A11
.
A9
CHECK THE 4WD MODE SWITCH — MONITOR THE GEM PID 4WDSGEM (4H)
Place the mode switch in the 4H position.
Does the GEM PID indicate 4WDHGH?
Yes
GO to
A10
.
No
GO to
A11
.
A10
CHECK THE 4WD MODE SWITCH — MONITOR THE GEM PID 4WDSGEM (4L)
Place the mode switch in the 4L position.
Does the GEM PID indicate 4WDLOW?
Yes
GO to
A20
.
No
GO to
A11
.
A11
CHECK THE 4WD MODE SWITCH — 2H
Page 9 of 74
1998 F-150/250 Workshop Manual
1/11/2011
http://www.fordtechservice.dealerconnection.com/pubs/con...
