09/03
2-303
DC 3535/2240/1632, WC M24
15-372, 15-375
Status Indicator RAPs
Initial issue
15-372 X PIO Initialization Failure 3
Communication Failure.
Procedure
Switch the power off then on. The problem continues.
YN
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
is OK, replace the ESS PWB (PL 13.1). If the problem continues, replace the IIT/IPS PWB (PL
18.3).
15-375 X PIO Before Scan Failure
Communication Failure.
Procedure
Switch the power off then on. The problem continues.
YN
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
is OK, replace the ESS PWB (PL 13.1). If the problem continues, replace the IIT/IPS PWB (PL
18.3).