Volkswagen CJDA Workshop Manual page 364

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Industriemotoren - Industrial Engines 2009 ▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
Indicated on display:
– Check exhaust gas temperature value from exhaust gas
temperature sender 3 -G495- (exhaust gas temperature
sender ahead of diesel particulate filter) in display zone 1
and from exhaust gas temperature sender 4 -G648- (ex-
haust gas temperature sensor downstream from diesel par-
ticulate filter) in display zone 2.
Note
◆ The exhaust gas temperature value in display zone 2 of dis-
play group 99 must be higher than the exhaust gas tempera-
ture values in display zones 1 and 2 of display group 100.
◆ In addition, the exhaust gas temperature value in display
zone 1 of display group 100 must be higher than the exhaust
gas temperature value in display zone 2 of display group
100.
– If the value in display zone 2 of display group 100 is higher
than the value in display field 1, the two senders have been
interchanged.
– If the value in display zone 2 of display group 99 is not plau-
sible, check exhaust gas temperature sender 1 -G235- (ex-
haust gas temperature sender ahead of turbocharger) and
wiring to sender as follows:
– Exit diagnosis function.
– Switch off ignition.
Checking resistance
– Disconnect 2-pin connector from exhaust gas temperature
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sender 1 -G235-
– Connect multimeter to contacts on connector for sender us-
ing test leads from -V.A.G 1594- to measure resistance.
Specification: 170.0...850.0 Ω
If the specification is not attained:
– Renew exhaust gas temperature sender 1 -G235-
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321, Assembly overview - turbocharger with attach-
ments.
– Then, read event memory of engine control unit, and clear
event memory if necessary
If specification is attained:
– Check wiring of exhaust gas temperature sender 1 -G235-
as follows:
– Using adapter cable -V.A.G 1598/39-2-, connect test box
-V.A.G 1598/42- to wiring harness of control unit
The engine control unit is not connected by this action.
348 Repair Group 21 - Turbocharging/supercharging
321.
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26, read event memory.
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Display group 100
xxx°C xxx°C
24.
xxx mbar xxx mbar