DTC 2411

CALIFORNIA ONLY

1. With the ignition "OFF", disconnect the Motronic control unit harness connector. The Motronic control unit is located beneath the drip tray, at the left rear (drivers side) of the engine compartment.
2. Connect a suitable volt/ohm meter between terminal 9 and 35 of the Motronic control unit harness connector. Set the volt/ohm meter to ohms.

Special Tools:

CAUTION: Avoid damaging the delicate connectors within the control unit harness connector. A simple set of test leads can be fabricated using flat connectors (part # VW N 17 457 2) or equivalent, and a pair of alligator clips.

Intake Air Temperature Chart (EGR):

^ Refer to the intake air temperature graph for the correct measurement.

3. If the correct measurement is obtained the problem may be intermittent (check the harness and connectors for poor connections), or the EGR system is defective or plugged.

Intake Air Temperature Sensor:

If the correct measurement is not obtained, disconnect the air intake temperature sensor connector and check the resistance through the sensor.

^ Refer to the intake air temperature graph for the correct measurement.

If the correct measurement is not obtained replace the intake air temperature sensor. If the correct measurement is obtained repair or replace the harness as necessary.