B48 Check Circuit 764 (Br/W) To The Contact Plate Switch C; B49 Check Circuit 764 (Br/W) For Short To Ground; B50 Check Circuit 764 (Br/W) For Open - Ford Expedition 1998 Workshop Manual

1998 Expedition/Navigator Workshop Manual

B48 CHECK CIRCUIT 764 (BR/W) TO THE CONTACT PLATE SWITCH C

B49 CHECK CIRCUIT 764 (BR/W) FOR SHORT TO GROUND

GEM C241

B50 CHECK CIRCUIT 764 (BR/W) FOR OPEN

http://www.fordtechservice.dealerconnection.com/pubs/content/~WSWJ/~MUS~LEN/21/...
Does the PID PLATE_C not indicate OPEN?
Yes
GO to B49.
No
GO to B48.
Connect a jumper wire between transfer case assembly C201-10, circuit 762 (Y/W), and C201-9, circuit 764
(BR/W).
Monitor the PID PLATE_C.
Does the PID PLATE_C indicate CLOSED?
Yes
GO to B52.
No
GO to B50.
Measure the resistance between transfer case assembly C201-9, circuit 764 (BR/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 764 (BR/W). CLEAR the DTCs. CYCLE the ignition switch to OFF, then ON. TEST the system for
normal operation.
Measure the resistance between transfer case assembly C201-9, circuit 764 (BR/W), and GEM C241-19, circuit
764 (BR/W).
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8/30/2010