Description
This error is associated with the
5.17 EFX. This error indicates that at some time after the initial start up sequence was successfully
completed, the gear motor was instructed to move and no
response was seen from the motors
revolution sensor.
Possible
Causes
1. The F2 fuse is blown
2. Damaged or Intermittent gear
motor wiring.
3. Bad gear motor
4. Damaged gear motor target
5. Bad lower PCA
Possible
Remedies
1. Remove power from the 5.17. Remove
the F2 fuse from the lower PCA. Measure the fuse
with an ohmmeter. The fuse should
measure 1 ohm or less. If the reading is significantly high,
replace the fuse. If the F2 fuse was
blown there may have been a reason that will cause the
fuse to blow again such as; damaged
gear motor wiring or a bad gear motor.
2. Carefully inspect the gear motor
wiring for intermittent or damaged wiring or connections.
replace or repair the wiring or
connections as appropriate.
3. With power removed from the 5.17,
remove both wires from the gear motor. Measure the
gear motor resistance with an
ohmmeter, it should read approximately 9 ohms. If the reading
is significantly low or
significantly high, replace the gear motor.
4. Visually inspect the gear motor
target, if it is ripped, torn or badly scratched, replace the
target.
5. Measure the voltage at the gear
motor during the start up sequence, it should measure
approximately 12 V.D.C. The voltage
would only be present between the time the sequence
was initiated and an error was
displayed.. If the voltage is significantly low or absent and the
F2
fuse is good (see step 1), replace the lower PCA.