Operation
0850−1/A1
Winterthur Gas & Diesel Ltd.
21/ 39
Failure Text
ME servo oil pump #2 fail. (ID 26)
FCM−20 No. LED Failure ID Display
Indication #04 PWM 26 26
Cause The setpoint pressure controller of the servo oil pump actuator CV7222C is > 100 mA (failure
signal is released after 30 seconds)
Procedure ⇒ In E85, set the FCM−20 #04 to off
⇒ Do a check of the connection on the servo oil pump actuator CV7222C
⇒ If necessary, replace the cables and connections
⇒ Make sure that the cables and connections between pump #2 and E95.04 is correct
⇒ If necessary, replace the pressure controller CV7222C
⇒ Set the FCM-20 #04 to on
Failure Text ME fuel rail pressure sensor #1+#2 meas. fail. (ID 28)
FCM−20 No. LED Failure ID Display
Indication #03 and #04 AI1 28 28
Cause The two sensor signals of PT3461C and PT3462C are less than 2 mA or more than 22 mA
(failure signal is released after 3 seconds).
Procedure ⇒ On the fuel rail, do a check of the pressure transmitters PT3461C and PT3462C for damage.
⇒ Use a multimeter to do a check of the 24 VDC supply on the plugs (X25, terminal 79 and
ground) and the cables to E95.03 and E95.04 and on the transmitter plugs (2+ / 1−).
⇒ If there is a power supply, do a check of the the cables for damage between the pressure trans-
mitters and E95.03 and E95.04.
⇒ Repair or replace damaged cables.
⇒ Replace a minimum of one pressure transmitter immediately.
FCM−20 No. LED Failure ID Display
Indication #03 and #04 AI2 28 28
Cause The sensor power supply has a short circuit (red LED)
Procedure ⇒ Disconnect the pressure transmitters PT 3461C and PT3462C and the plugs X25
Remark: ID failure 33 on FCM−20 #03 and #04 will be shown
⇒ Use a multimeter to do a check between each of the cables on plug X25 terminals 79 and 80
and ground for a short circuit or ground fault.
⇒ Replace damaged cables or temporarily repair with insulation tape until spares are available.
⇒ Do a check of the transmitters for a ground fault. If necessary, replace the pressure transmit-
ter(s).
⇒ If the red LED stays on when the plug X25 is disconnected, replace the related FCM−20.
2014
Failures and Defects of WECS Components
To Next Page
