Operation
0850−1/A1
Winterthur Gas & Diesel Ltd.
33/ 39
Failure Text
ME Inj. Quantity Piston, No Movement (slowdown) (ID 91)
FCM−20 No. LED Failure ID Display
Indication #01 to #09 InjQ 91 91
Cause The fuel quantity piston moves less than 4% during the injection.
Remark: This alarm is first transmitted after three revolutions.
Procedure Remark: If the engine operates at very low load, this failure usually occurs because of the
small fuel quantity.
⇒ Do a check of the rail valve.
⇒ Make sure that the fuel viscosity is in the permitted range.
⇒ Make sure that the hydraulic piston in the exhaust valve drive moves freely.
Remark: If the vessel operates in rough sea, this failure can occur during fast load changes.
Failure Text ME Inj. Quantity Piston, Stuck In Max. Pos. (Inj.cut−off+SLD) (ID 92)
FCM−20 No. LED Failure ID Display
Indication #01 to #09 None 92 92
Cause Sensor signal is more than 18 mA. The fuel quantity piston makes a fuel stroke because the
return command is not transmitted correctly.
Procedure ⇒ Do a check of the rail valve position.
⇒ If the rail valve stays in the inject position, do a check of the injection control valve.
⇒ If the injection control valve stays in the open position, make sure that the oil return pipe is not
clogged or closed.
⇒ Make sure that the fuel viscosity is in the permitted range.
⇒ Examine the fuel injectors and pipes for leaks.
Failure Text ME injection quantity piston fail. cylinder #nn (ID 93)
FCM−20 No. LED Failure ID Display
Indication #01 to #09 InjQ 93 93
Cause The injection quantity piston is defective.
Procedure ⇒ The cause of this failure is related to failure 90, 91 or 92. For more data, see the related failure
ID.
Failure Text WECS module FCM−20 #nn fail. (ID 95 to 0.8)
FCM−20 No. LED Failure ID Display
Indication #01 to #nn Fail 95 to 103 95 to 0.3
Cause Missing communication on Can S1 and S2 bus on FCM #nn. Remaining FCM−20 received no
heartbeat signal from this FCM−20 (failure signal is released after 12 seconds)
Procedure ⇒ Do a check of the related LED on the FCM−20 #nn.
⇒ If the red LED comes on, do a check of the cables on the related FCM−20 and the plugs X22
and X23 for for correct connections and / or damage.
⇒ Do a check of the terminating resistor on FCM−20 #01 and the FCM−20 on the last cylinder (or
the on-line spare FCM−20 #00) plug X22 between terminals 49/59 and plug X23 terminals
57/58.
⇒ If the terminating resistors are serviceable, repair or replace damaged cables.
⇒ if the failure occurs on one module only, replace the related FCM−20 with the online spare.
Failure Text ME manual injection cutoff cylinder #nn
FCM−20 No. LED Failure ID Display
Indication #01 to #09 None None None
Cause Indication of a manually selected cut off. No failure.
2014
Failures and Defects of WECS Components
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