Volkswagen CJDA, Workshop Manual

Page: 102 / 553

Indicated on display Possible cause of fault Possible effects Fault remedy
◆
Open circuit or short-
circuit in line
◆
Warning lamp defec-
tive
– Check warning lamp
⇒
Page 89 , final
control diagnosis
– Check electrical con-
nection to lamp, if OK
=> lamp defective
⇒
Page 486 , current
flow diagrams
09744/P2610
Control unit defective
◆
Internal defect in en-
gine control unit
-J623-
◆
ESI4, calculation limi-
ted and validation of
temperature sensors
on cold start locked
– -J623- Renew
⇒
Page 418
09778/P2632
Electric fuel pump 2 relay
-J49-
Open circuit
◆
Open circuit in wire
◆
-J49- defective
◆
Supplementary fuel
pump -V393- fails
◆
Pressure in low-pres-
sure fuel system too
low
– Check -J49-
⇒
Page 89 , final
control diagnosis
– Check wiring to -J49-
⇒
Page 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-
⇒
Page 418
09779/P2633
Electric fuel pump 2 relay
-J49-
Short to earth
◆
Wiring short to earth
◆
-J49- defective
◆
Inline fuel pump
-V393- runs continu-
ously when terminal
15 ON
– Check -J49-
⇒
Page 89 , final
control diagnosis
– Pull off relay, and read
event memory again --
if in addition PSPInli-
neOL--> renew relay
– Check wiring to -J49-
⇒
Page 486 , current
flow diagrams
– If OK, renew -JJ623-
⇒
Page 418
3
Industriemotoren - Industrial Engines 2009
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Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
86 Repair Group 01 - Vehicle self-diagnosis