Jetta L4-1.8L Turbo (AWD) (2000)
Throttle Body: All Technical Service Bulletins
Engine Controls - Idle Dip/Fluctuation/MIL ON/DTC's Set
Condition
24 07 05 Feb. 2, 2007 2010583 Supersedes T. B. Group 24 number 04-03 dated July 12, 2004 due to inclusion into ElsaWeb, with Self Diagnosis
Function update according to Base 10.01 update.
Engine, Fluctuating Idle or Idle Speed Too Low
Idle fluctuates or is too low at times, poor throttle response, engine bucking, cold start driving concerns, Malfunction Indicator lamp (MIL) ON.
Technical Background
May be caused by contaminants (dirt, oil) on interior surfaces of throttle valve control module -J338-.
Contaminants may cause bucking due to wrong airflow recognition.
DTC's which may be associated with condition:
In conjunction with the above listed DTCs, the following DTC's which may also be stored:
Production Solution
No production change required.
Service
NOTE: Always review and follow Cautions and Warnings listed in the Repair Manual regarding the use of the VAS 5051 and VAS 5052 during any
road test.
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Connect the VAS 5051/5052 Diagnostic tool.
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Switch ignition ON.
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Select "Vehicle Self Diagnosis".