Volkswagen CJDA Workshop Manual page 49

Indicated on display
Electrical fault
00145/P0091
Fuel metering valve
-N290-
Short to earth
00146/P0092
Fuel metering valve
-N290-
Short to positive
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
Possible cause of fault Possible effects
◆ Open circuit or line
short-circuit
◆ -N290- defective
◆ Wiring short to earth
◆ -N290- defective
◆ Wire has short to
positive
◆ -N290- defective
Industriemotoren - Industrial Engines 2009 ▶
◆ Failure of metering
unit
◆ Failure of metering
unit and engine
◆ Failure of metering
unit
3
Fault remedy
– Check fuel metering
valve -N290-
⇒ P age 388
– Check electrical con-
nection to metering
unit
– Check terminal 15 ON
and +12V on actuator
+ (A2). No voltage ⇒
open circuit between
Vbat and actuator
– Pull connector off ac-
tuator, and check wir-
ing between actuator/
ECU
– Measure resistance
on actuator. If no con-
tinuity ⇒ renew ECU
– Check fuel metering
valve -N290-
⇒ P age 388
– Pull connector off ac-
tuator, and read event
memory again. If in
addition MeUnOL ⇒
renew actuator - oth-
erwise check wiring
between actuator/
ECU - if OK ⇒ renew
ECU
– Check fuel metering
valve -N290-
⇒ P age 388
– Pull connector off ac-
tuator, and read event
memory again. If in
addition MeUnOL ⇒
renew actuator - oth-
erwise check wiring
between actuator/
ECU - if OK ⇒ renew
ECU
3 List of fault codes 33