15-372 X PIO Initialization Failure 3
Communication Failure.
Procedure
Switch the power off then on. The problem continues.
Y
N
Return to Service Call Procedures.
Check the connectors on the IIT/IPS PWB (PL 18.3) and the ESS PWB (PL 13.1). If the check
ia OK, replace the ESS PWB (PL 13.1). If the problem continues, replace the IIT/IPS PWB (PL
18.3).
Prelaunch Training/Review
DC1632/2240
15-375 X PIO Before Scan Failure
Communication Failure.
Procedure
Switch the power off then on. The problem continues.
Y
N
Return to Service Call Procedures.
Check the connectors on the IIT/IPS PWB (PL 18.3) and the ESS PWB (PL 13.1). If the check
ia OK, replace the ESS PWB (PL 13.1). If the problem continues, replace the IIT/IPS PWB (PL
18.3).
6/02
2-253
Status Indicator RAPs
15-372, 15-375