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Diagnostic Code
P1754
CCS circuit failure.
P1760
EPC signal intermittent short.
P1780
TCS not cycled during the On-Board
Diagnostics or the circuit is open or shorted.
P1781
4X4 Low switch circuit failure.
P1783
Transmission Fluid Temperature has
exceeded 270°F.
Technical Service Information
FORD 4R100
Diagnostic Trouble Code Chart
Description
Figure 22
AUTOMATIC TRANSMISSION SERVICE GROUP
Symptom
Failed Off: No third gear engine
braking in O.D. cancel.
Failed On: Third gear engine
braking in O.D. range. Coast clutch
may be damaged causing eventual
failure.
Short circuit causes minimum EPC
pressure.
No overdrive cancel when switch is
cycled.
Early or delayed shift schedule.
Slight increase in EPC pressure.
May flash TCIL.
19
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