Volkswagen CJDA Workshop Manual page 102

3
Industriemotoren - Industrial Engines 2009 ▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
Indicated on display
09744/P2610
Control unit defective
09778/P2632
Electric fuel pump 2 relay
-J49-
Open circuit
09779/P2633
Electric fuel pump 2 relay
-J49-
Short to earth
86 Repair Group 01 - Vehicle self-diagnosis
Possible cause of fault Possible effects
◆ Open circuit or short-
circuit in line
◆ Warning lamp defec-
tive
◆ Internal defect in en-
gine control unit
-J623-
◆ Open circuit in wire
◆ -J49- defective
◆ Wiring short to earth
◆ -J49- defective
◆ ESI4, calculation limi-
ted and validation of
temperature sensors
on cold start locked
◆ Supplementary fuel
pump -V393- fails
◆ Pressure in low-pres-
sure fuel system too
low
◆ Inline fuel pump
-V393- runs continu-
ously when terminal
15 ON
Fault remedy
– Check warning lamp
⇒ P age
89, final
control diagnosis
– Check electrical con-
nection to lamp, if OK
=> lamp defective
⇒ P age
486, current
flow diagrams
– -J623- Renew
⇒ P age 418
– Check -J49-
⇒ P age
89, final
control diagnosis
– Check wiring to -J49-
⇒ P age
486, current
flow diagrams
– Check terminal 15 On
and +12V on relay +
(KL85). Pull off relay
connector, and check
wiring between relais/
ECU. Measure resist-
ance on relay.
– If no continuity ⇒ re-
new -JJ623-
⇒ P age 418
– Check -J49-
⇒ P age
89, final
control diagnosis
– Pull off relay, and read
event memory again --
if in addition PSPInli-
neOL--> renew relay
– Check wiring to -J49-
⇒ P age
486, current
flow diagrams
– If OK, renew -JJ623-
⇒ P age 418