09/03
2-30
DC 3535/2240/1632, WC M24
3-337, 3-340
Initial issue
Status Indicator RAPs
3-337 IIT-ESS Communication Failure 18
Controller received check code error (reception aborted after header received).
Procedure
Switch the power off then on. The problem continues.
YN
Return to Service Call Procedures.
Reinstall the software. If the problem continues, check the IIT/IPS PWB connectors (P/J Loca-
tions, Figure 30). If the check is OK, replace the IIT/IPS PWB (PL 18.3).
3-340 IOT-ESS Communication Failure 1
Controller received check code error (incorrect parameter instruction).
Procedure
Switch the power off then on. The problem continues.
YN
Return to Service Call Procedures.
Reinstall the software. If the problem continues, check the MCU PWB connectors (P/J Loca-
tions, Figure 15). DC 3535 only: Replace the VSEL PWB (PL 13.1). If the problem persists,
replace the MCU PWB (PL 13.1).
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