Operation0850−1/A1
Winterthur Gas & Diesel Ltd.
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Failure Text
WECS CAN S1-bus fail. (ID 1.2)
FCM−20 No. LED Failure ID Display
Indication #01 to #09 S1 112 1.2
Cause CAN system bus #1 monitoring / CAN failure (failure signal is released after 3 seconds).
Procedure ⇒ On the related FCM−20 (plug X22, terminals 49/50), make sure that the cable connections
have no damage and are connected correctly.
⇒ Make sure that the S1-bus with 120 ohm resistors on first and last FCM−20 (plug X22) is con-
nected correctly (refer to electrical drawings).
⇒ On the related FCM−20, repair the cable connection / cables.
⇒ If the failure shows on one module only, replace the related FCM−20.
Failure Text WECS CAN S2-bus fail. (ID 1.3)
FCM−20 No. LED Failure ID Display
Indication #01 to #09 S2 113 1.3
Cause CAN system bus #2 monitoring / CAN failure (failure signal is released after 3 seconds).
Procedure ⇒ On the related FCM−20 (plug X23, terminals 57/58), make sure that the cable connections
have no damage and are connected correctly.
⇒ Make sure that the S2-bus with 120 ohm resistors on first and last FCM−20 plug X23 is con-
nected correctly (refer to electrical drawings).
⇒ On the related FCM−20, repair the cable connection / cables.
⇒ If the failure shows on one module only, replace the related FCM−20.
Failure Text ME start pilot valve #nn loop fail. (ID 1.4)
FCM−20 No. LED Failure ID Display
Indication #01 to #09 Start Vlv 114 1.4
Cause Broken connection or short circuit between FCM−20 and start pilot solenoid valve
Procedure ⇒ At the cylinder cover, make sure that the plug in the terminal box E95.41 to E95.49 has no
damage and is correctly connected.
⇒ Make sure that the cables between the related solenoid valve and the FCM−20 (plug X15,
terminals 33/34) have no damage and are connected correctly.
⇒ Repair the cables and connections between the related solenoid valve and the FCM−20 (plug
X15).
2014
Failures and Defects of WECS Components
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