Description
Errors 30 through 33 all indicate
the loss of communications or erratic communications between the microprocessors in the upper PCA
and the lower PCA. The trouble shooting procedures for all of the are essentially the same.
Error 30 is defined as upper PCA not receiving from lower
PCA. Error 31 is defined as faulty
data received from lower PCA. Error 32 is defined as lower
PCA not receiving from upper PCA.
Error 33 is defined as faulty data received from upper PCA
Possible
Causes
1. An upper PCA to lower PCA
interconnect cable is bad.
2. The interconnect cable at the
upper PCA was mistakenly plugged into the CSAFE connector.
3. A 5.17 EFX equipped with version
1.01 upper and lower software.
4. A 5.17 with mismatched upper and
lower software.
5. A defective lower PCA.
6. A defective upper PCA.
Possible
Remedies
1. Substitute a know good
interconnect cable between the upper and lower PCAs to determine
if the interconnect cable is
defective.
2. Remove the interconnect cable
from the CSAFE connector and insert it in the correct upper
PCA connector.
3. Replace the 5.17 upper and lower
software with the most current software versions.
4. If only one of the upper or lower
software is version 1.01, replace the version 1.01 software
with the most current version of
software.
5. Substitute a known good lower PCA
to determine if the lower PCA is defective.
6.
Substitute a known good upper PCA determine if the upper PCAs defective.