3 Series E46 318d (M47TU) SAL
VS-23/Hillemeier
Baugruppe/Group: 11
11 08 02 (922)
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Datum/Date:
11/2002
Update: 08/2004
Update: 09/2005
Turbocharger failure
E46 / M47TU
Complaint:
Noise and smoke generated in engine compartment.
No output from engine.
Cause:
Turbocharger failure. Individual turbine blades overloaded due to vibrations and centrifugal
forces.
Affected vehicles:
E46/M47TU
Manufacturing period: from the start of series production up to November 2003
Procedure:
In case of customer complaint, the turbocharger should be replaced as follows and the
DDE control unit reprogrammed.
Replacing exhaust turbocharger
Important:
To prevent repeat repairs, after installing a new exhaust turbocharger and before
flange-mounting the exhaust system, make sure that:
•
Primary and main catalytic converter are not soiled or blocked
•
Crankcase ventilation system (vent unit) is not coked or damaged.
Replace the exhaust turbocharger as described in the Repair Instructions.
(Do not fit the exhaust system!).
Remove the crankcase ventilation system for checking and replace if it shows signs of
coking or damage.
Perform the following steps with the engine at operating temperature:
•
Pull vacuum hose from exhaust gas recirculation valve (EGR).
•
Measure air flow in accordance with test specifications
-
at idling speed
-
at approx. 3500 rpm
•
Make a note of the values and fit the exhaust system.
•
Repeat the air flow measurement in accordance with test specifications.
•
Compare the values from the two measurements and derive the following measures
from the result:
1.
Values identical
Exhaust system and crankcase ventilation system OK
2.
Values not identical
Replace primary catalytic converter and main catalytic converter as necessary as
described in the Repair Instructions.
As a precaution, also replace the crankcase ventilation system.
Fit the exhaust system and reassemble the vehicle.
Reprogramming DDE control unit
SI Turbocharger failure E46 M47TU
BMW AG - TIS
11.02.2013 10:35
Issue status (12/2007) Valid only until next DVD is issued
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