3.5 Checking exhaust gas temperature
sender 1 -G235- (exhaust gas tempera-
ture sender ahead of turbocharger)
Special tools and workshop equipment required
◆ Hand multimeter -V.A.G 1526- or multimeter -V.A.G 1715-
◆ Auxiliary measuring set -V.A.G 1594D-
◆ Test box -V.A.G 1598/42- with adapter cable
-V.A.G 1598/39-2-
◆ Current flow diagram
Test prerequisites
● Fuses must be OK.
● The battery voltage must be at least 11.5 V.
● All electrical consumers must be switched off.
● Earth connections OK
● Engine must be cold
Test procedure
Note
Only gold-plated contacts may be used when repairing the con-
tacts in the connectors of the exhaust gas temperature 1.
– Start engine and run at idling speed.
– Connect vehicle diagnostic tester, and select engine control
unit. ⇒ Page 23
– Select diagnosis function “011-Read measured value block”.
– Select “Display group 99”.
Indicated on display:
Note
The display zones may be shown one below the other or next to
each other on the display of the vehicle diagnostic tester.
– Increase engine speed to 2400...2800 rpm.
– Check exhaust gas temperature value from exhaust gas
temperature sender 1 -G235- (exhaust gas temperature
sender ahead of turbocharger) in display zone 2. The tem-
perature value must increase evenly and continuously.
– Keep engine speed at 2400...2800 rpm for approx. 3 mi-
nutes.
Note
Make a note of temperature value in display zone 2.
– Press ← button.
– With the engine speed being increased, select “Display
group 100”.
Display group 99
880 rpm 114.0°C xxx.x°C xxx.x°C
Industriemotoren - Industrial Engines 2009 ▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
3
3 Checking components and functions
347
To Next Page
Loading...
