B9 Check Circuit 780 (Db) For Short To Ground; B10 Check Circuit 780 (Db) For Short To Power; B11 Check Circuit 682 (Db) For Open - Ford Expedition 1998 Workshop Manual

1998 Expedition/Navigator Workshop Manual

B9 CHECK CIRCUIT 780 (DB) FOR SHORT TO GROUND

B10 CHECK CIRCUIT 780 (DB) FOR SHORT TO POWER

B11 CHECK CIRCUIT 682 (DB) FOR OPEN

GEM C239
http://www.fordtechservice.dealerconnection.com/pubs/content/~WSWJ/~MUS~LEN/21/...
Is the resistance less than 5 ohms?
Yes
GO to B9.
No
REPAIR circuit 780 (DB). CLEAR the DTCs. TEST the system for normal operation.
Measure the resistance between mode switch C230-3, circuit 780 (DB), and ground.
Is the resistance greater than 10,000 ohms?
Yes
GO to B10.
No
REPAIR circuit 780 (DB). CLEAR the DTCs. TEST the system for normal operation.
Measure the voltage between mode switch C230-3, circuit 780 (DB), and ground.
Is any voltage indicated?
Yes
REPAIR circuit 780 (DB). CLEAR the DTCs. TEST the system for normal operation.
No
GO to B11.
Measure the resistance between mode switch C230-2, circuit 682 (DB), and GEM C239-21, circuit 682 (DB).
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8/30/2010