C38 Check Circuit 764 (Br/W) To The Contact Plate Switch C; C39 Check Circuit 764 (Br/W) For Short To Ground; C40 Check Circuit 764 (Br/W) For Open - Ford Expedition 1998 Workshop Manual

1998 Expedition/Navigator Workshop Manual

C38 CHECK CIRCUIT 764 (BR/W) TO THE CONTACT PLATE SWITCH C

C39 CHECK CIRCUIT 764 (BR/W) FOR SHORT TO GROUND

GEM C241

C40 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 C39.
No
GO to C38.
Connect a jumper wire between transfer case assembly C201-9, circuit 764 (BR/W), and C201-10, circuit 762
(Y/W).
Monitor the PID PLATE_C.
Does the PID PLATE_C indicate CLOSED?
Yes
GO to C42.
No
GO to C40.
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 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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