Does the GEM PID indicate 2WD?
Yes
GO to
B9
.
No
GO to
B11
.
B9
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
B10
.
No
GO to
B11
.
B10
CHECK THE 4WD MODE SELECT SWITCH — MONITOR THE GEM PID 4WDSGEM (4L)
Place the mode switch in the 4L position.
Does the GEM PID indicate 4WDLOW?
Yes
GO to
B20
.
No
GO to
B11
.
B11
CHECK THE 4WD MODE SWITCH — 2H
Mode Switch C230
Place the mode switch in the 2H position.
Page 33 of 74
1998 F-150/250 Workshop Manual
1/11/2011
http://www.fordtechservice.dealerconnection.com/pubs/con...
