A19 Monitor The A4Wd Clutch Relay Pid 4Wdclst; A20 Check Circuit 976 (O) For Short To Power - Ford Expedition 1998 Workshop Manual

1998 Expedition/Navigator Workshop Manual

A19 MONITOR THE A4WD CLUTCH RELAY PID 4WDCLST

A20 CHECK CIRCUIT 976 (O) FOR SHORT TO POWER

GEM C241
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C201-2, circuit 772 (LB), and ground. If the front Hall effect sensor is not indicating properly, measure the voltage
between transfer case assembly C201-4, circuit 435 (Y/LB), and ground.
Is any voltage indicated?
Yes
REPAIR circuit 435 (Y/LB)/772 (LB). CLEAR the DTCs. TEST the system for normal operation.
No
REPLACE the inoperative Hall effect sensor(s). CLEAR the DTCs. TEST the system for normal operation. If
concern still exists, REPLACE the GEM; REFER to
Monitor the PID 4WDCLST.
Place the mode switch in the A4WD position.
Does the PID 4WDCLST indicate ON--- when in the A4WD mode?
Yes
GO to A27.
No
If the PID 4WDCLST indicates OFFO-G, GO to
Measure the voltage between GEM C241-15, circuit 976 (O), and ground.
Is any voltage indicated?
Yes
REPLACE the GEM; REFER to Section 419-10. CLEAR the DTCs. TEST the system for normal operation.
Section 419-10. TEST the system for normal operation.
A20 .
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8/30/2010