Auto Repair Manual Free Download and ReviewsFree download ebook pdf files automotive manual

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Test 1 Test secondary air injection (function chain). (only (USA), EURO 3) Test 2 Check component M33 (electric air pump). (only (USA), EURO 3) Test 3 Check component Y32 (Air pump switchover valve). (only (USA), EURO 3) 1 Test secondary air injection (function chain). (only (USA), EURO 3) Test sequence Ignition ON Test secondary air injection (function chain).(Actuate with key F2.) Note: Component M4/3 (engine/AC electric suction fan) runs with an on/off ratio of 50 % during the actuations for safety reasons. Note! Communication with ECU required. 2 Check component M33 (electric air pump). (only (USA), EURO 3) Test 2-1 Test actuation of component M33 (electric air pump) Test 2-2 Test voltage supply of component M33 (electric air pump) Test 2-3 Check component K40/7kN (Air pump relay) 2-1 Test actuation of component M33 (electric air pump) Test requirement Engine at idle speed Actuate component M33 (electric air pump).(Actuate with key F2.)

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Design 10 B11 B17 B28 B28/3 CAN K40 L5/6 N3/7 Inline injection pump Coolant temperature sensor Intake air temperature sensor Pressure sensor EGR lift sensor Data bus Relay module Crankshaft position sensor IFI control module Glow output stage ETC control module Accelerator pedal position sensor Cruise control switch IFI electrohydraulic shutoff Fuel temperature sensor Resonance intake manifold switch over valve Resonance intake line switchover valve IFI fuel metering control EGR vacuum transducer Pressure regulating flap vacuum transducer N14/2 N15/3 R25/2 S40 Y1/1 Y1/1b1 Y22/6 Y22/7 Y23/1 Y23/1I1 Fuel rack position sensor Y31/1 Y31/2 NOTE: The on board diagnosis II (OBD II) functions are stored in the IFI control module (N3/7). Task Recognizing and storing faults in the fuel injection system. In addition, the ambient conditions when the fault occurs are also stored. Function Fault path tests In certain operating states, fault paths are tested e.g. for short circuit, open circuit, implausible signals and illogical combinations. Notes refault memory Fault memory: fault readout current faults

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The electro-hydraulic actuator is bolted to the side of the fuel distributor. It consists of a plate valve fastened between two electromagnets. By varying the electric current to the electro-hydraulic actuator and changing the strength of the magnets, the plate valve can be moved. The varying position of the plate valve controls the quantity of fuel allowed into the lower chamber of the fuel distributor, causing the differential pressure to vary. The operating range is from -50 to +150mA. Differential pressure will be from 0 bar to about 1.6 bar (24 PSI) less than system pressure. The electro-hydraulic actuator is constructed so that without any operating current, such as in an electrical failure, the plate valve would deflect enough under system pressure to maintain a differential pressure of about 0.4 bar. This combined with the 0.2 bar difference caused by the pressure regulating springs in the fuel distributor will result in a difference of 0.2 bar between the upper and lower chambers in the fuel distributor. Since this pressure difference is the same as on the earlier CIS system, the car will still be driveable in the event of an electrical failure. However, it will run roughly because of the resultant lean air/fuel mixture.

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the engine fan running constantly with code P2073(004) Electric fan for engine & AC, open circuit; this may be caused by the wiring harness between the ECU and the engine fan or the engine control unit fan end stage malfunctioning. To resolve, perform the below procedure. Only vehicles as outlined in Service Campaign Bulletin No. 2003110006 are affected, see vehicle range shown. When performing Service Campaign Bulletin No. 2003110006 only, the engine ECU does not need to be exchanged. All engine ECUs exchanged under warranty for the above condition must be accompanied by the freeze frame data for the respective DTC. Claims submitted without this information will be debited back to the dealer.

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Knock-in radial sealing ring with 65 mm OD by means of installer, until installer is flush with bearing cap. Note: Coat radial sealing ring together with rubber-coated sheet-metal jacket on OD with rubber sliding compound “napthalene H or hypoid gear oil”. Attention! On vehicles with large rear axle center piece there are 2 versions of bearing caps for radial sealing rings with 65 mm dia . On 1st version, push radial sealing ring inwards until punch rests against lug for dirt labyrinth of bearing cap. On 2nd version, push radial sealing ring inward until punch is flush with lower edge of chamfer (lug for dirt labyrinth is made shorter) of bearing cap. To avoid excessive pressure, use spacing ring made according to drawing. Radial Sealing Ring Correctly Inserted