B54 Check Circuit 763 (O/W) For Short To Ground; B55 Check Circuit 763 (O/W) For Open; B56 Check Circuit 763 (O/W) For Short To Power - Ford Expedition 1998 Workshop Manual

1998 Expedition/Navigator Workshop Manual

B54 CHECK CIRCUIT 763 (O/W) FOR SHORT TO GROUND

GEM C241

B55 CHECK CIRCUIT 763 (O/W) FOR OPEN

B56 CHECK CIRCUIT 763 (O/W) FOR SHORT TO POWER

GEM C241
http://www.fordtechservice.dealerconnection.com/pubs/content/~WSWJ/~MUS~LEN/21/...
Does the PID PLATE_D indicate CLOSED?
Yes
RECONNECT the transfer case assembly and GEM C241. GO to
No
GO to B55.
Measure the resistance between transfer case assembly C201-13, circuit 763 (O/W), and ground.
Is the resistance greater than 10,000 ohms?
Yes
REPLACE the GEM; REFER to Section 419-10. CLEAR the DTCs. TEST the system for normal operation.
No
REPAIR circuit 763 (O/W). CLEAR the DTCs. CYCLE the ignition to OFF, then ON. TEST the system for normal
operation.
Measure the resistance between transfer case assembly C201-13, circuit 763 (O/W), and GEM C241-18, circuit
763 (O/W).
Is the resistance less than 5 ohms?
Yes
GO to B56.
No
REPAIR circuit 763 (O/W). CLEAR the DTCs. TEST the system for normal operation.
Measure the voltage between transfer case assembly C201-13, circuit 763 (O/W), and ground.
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8/30/2010