Operation0850−1/A1
Winterthur Gas & Diesel Ltd.
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Failure Text
ME injection quantity sensor #nn meas. fail. (ID 80)
FCM−20 No. LED Failure ID Display
Indication #01 to #09 InjQ 80 80
Cause The sensor power supply has a short circuit (red LED).
Procedure ⇒ Disconnect the fuel quantity sensor and the plug X26.
Remark: CA sensor failure ID 57 or 58 if FCM−20 # is the last cylinder, or last but one
cylinder.
⇒ Use a multimeter to do a check between each of the cables on the plug X26 terminals 86 and
87 and ground (terminal 88) for short circuit or ground fault.
⇒ Replace damaged cables or temporarily repair with insulation tape until spares are available.
⇒ If necessary, replace the fuel quantity sensor.
⇒ If failure ID 80 stays on when the plug X26 is disconnected, replace the related FCM−20.
Failure Text ME Inj. Time Too Short (ID 87)
FCM−20 No. LED Failure ID Display
Indication #01 to #09 InjQ 87 87
Cause Injection timing failure (injection time is less than 60% of the set time)
Procedure ⇒ Make sure that the rail valve is serviceable.
⇒ If the rail valve is serviceable, do a check of the opening pressure of the injector valve.
⇒ If the opening pressure is correct, make sure that the injection nozzle is not defective.
⇒ If the injection nozzle is serviceable, examine the injector pipes for leaks.
Failure Text ME Inj. Time Too Long (ID 88)
FCM−20 No. LED Failure ID Display
Indication #01 to #09 InjQ 88 88
Cause Injection timing failure (injection time is more than 150% of the set time)
Procedure ⇒ Make sure that the rail valve is serviceable.
⇒ If the rail valve is serviceable, make sure that the injectors are not blocked.
⇒ If the injectors are not blocked, do a check of the opening pressure of the injector valve.
⇒ Make sure that all injectors operate correctly.
Remark: This failure can occur during fast load changes when the engine operates in rough
sea.
Failure Text ME injection timing fail. cylinder #nn (ID 89)
FCM−20 No. LED Failure ID Display
Indication #01 to #09 None 89 89
Cause Injection timing failure
Procedure ⇒ The cause of this failure is the failure 87 or 88. For more data, see the related failure ID 87 and
ID 88 above.
2014
Failures and Defects of WECS Components
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