A8 Lim.


A8 Lim. (BSM) Heated Oxygen Sensor    G39 , Checking

A8 Lim. (BSM) Heated Oxygen Sensor G39 , Checking

Heated Oxygen Sensor G39 , Checking A8 Lim. General Description The Heated Oxygen Sensor G39 does not actually measure oxygen concentration, but rather the difference between the amount of oxygen in the exhaust gas and the amount of oxygen in air. Rich mixture causes an oxygen demand. This demand causes a voltage to build up, due to transportation of oxygen ions through the Heated Oxygen Sensor G39 layer. Lean mixture causes low voltage, since there is an oxygen excess..

A8 Lim. (BSM) Heated Oxygen Sensor 2   G108 , Checking

A8 Lim. (BSM) Heated Oxygen Sensor 2 G108 , Checking

Heated Oxygen Sensor 2 G108 , Checking A8 Lim. General Description The Heated Oxygen Sensor 2 G108 does not actually measure oxygen concentration, but rather the difference between the amount of oxygen in the exhaust gas and the amount of oxygen in the air. Rich mixture causes an oxygen demand. This demand causes a voltage to build up, due to transportation of oxygen ions through the Heated Oxygen Sensor 2 G108 layer. Lean mixture causes low voltage, since there is an oxy..

A8 Lim. (BSM) Heated Oxygen Sensor 3   G285 , Checking

A8 Lim. (BSM) Heated Oxygen Sensor 3 G285 , Checking

Heated Oxygen Sensor 3 G285 , Checking A8 Lim. General Description The Heated Oxygen Sensor 3 G285 does not actually measure oxygen concentration, but rather the difference between the amount of oxygen in the exhaust gas and the amount of oxygen in air. Rich mixture causes an oxygen demand. This demand causes a voltage to build up, due to transportation of oxygen ions through the Heated Oxygen Sensor 3 G285 layer. Lean mixture causes low voltage, since there is an oxygen ..

A8 Lim. (BSM) Heated Oxygen Sensor 4   G286 , Checking

A8 Lim. (BSM) Heated Oxygen Sensor 4 G286 , Checking

Heated Oxygen Sensor 4 G286 , Checking A8 Lim. General Description The Heated Oxygen Sensor 4 G286 does not actually measure oxygen concentration, but rather the difference between the amount of oxygen in the exhaust gas and the amount of oxygen in air. Rich mixture causes an oxygen demand. This demand causes a voltage to build up, due to transportation of oxygen ions through the Heated Oxygen Sensor 4 G286 layer. Lean mixture causes low voltage, since there is an oxygen ..

A8 Lim. (BSM) Ignition Coils With Power Output Stage, Checking

A8 Lim. (BSM) Ignition Coils With Power Output Stage, Checking

Ignition Coils With Power Output Stage , Checking A8 Lim. General DescriptionThe ignition coil must transform the relatively low 12 V on-board vehicle voltage to the high ignition voltage required and supply the energy stored in that voltage to the spark plug. The functional principle of the ignition coil is relatively simple. It has a primary winding (small number of turns) and a secondary winding (lots of turns). The turn ratio between the number of primary and secondary winding turns d..

A8 Lim. (BSM) Intake Air Switch-Over Valve   N335 , Checking

A8 Lim. (BSM) Intake Air Switch-Over Valve N335 , Checking

Intake Air Switch-Over Valve N335 , Checking A8 Lim. General DescriptionThis procedure is used to diagnose the Intake Air Switch-Over Valve N335 , which is controlled by the Engine Control Module J623 . Special tools and workshop equipment required Multimeter. Wiring Diagram. Scan Tool. Test requirements Fuses OK. Battery voltage OK Switch OFF All electrical and electronic accessories Vehicles with Auto. Transmission, ensure Selector Lever liition is in “P”. Vehicl..

A8 Lim. (BSM) Intake Flap Motor   V157 , Checking

A8 Lim. (BSM) Intake Flap Motor V157 , Checking

Intake Flap Motor V157 , Checking A8 Lim. General DescriptionThe Intake Flap Motor V157 is controlled by the Engine Control Module J623 to increase the EGR rate by reducing the overpressure in the intake manifold. Special tools and workshop equipment required Multimeter. Wiring Diagram. Scan Tool. Test requirements Fuses OK. Battery voltage OK Switch OFF All electrical and electronic accessories Vehicles with Auto. Transmission, ensure Selector Lever liition is in..

A8 Lim. (BSM) Intake Manifold Runner Position Sensor   G336 , Checking

A8 Lim. (BSM) Intake Manifold Runner Position Sensor G336 , Checking

Intake Manifold Runner liition Sensor G336 , Checking A8 Lim. General DescriptionThe Intake Manifold Runner liition Sensor G336 monitors the liition of the intake manifold runner flaps. These flaps can be adjusted open or closed to provide longer or shorter intake runners depending on ambient conditions to increase engine efficiency. Special tools and workshop equipment required Multimeter. Wiring Diagram. Scan Tool. Test requirements Fuses OK. Battery voltage OK. Switch OF..

A8 Lim. (BSM) Intake Manifold Runner Position Sensor 2   G512 , Checking

A8 Lim. (BSM) Intake Manifold Runner Position Sensor 2 G512 , Checking

Intake Manifold Runner liition Sensor 2 G512 , Checking A8 Lim. General DescriptionThe Engine Control Module 2 J624 uses the Intake Manifold Runner liition Sensor 2 G512 signal to calculate a correction value for the charge air pressure. Evaluation of the signal gives consideration to the influence of temperature on the density of the charge air. Special tools and workshop equipment required Multimeter. Wiring Diagram. Scan Tool. Test requirements Fuses OK. Battery vo..

A8 Lim. (BSM) Interrogating the Fault Memory

A8 Lim. (BSM) Interrogating the Fault Memory

Interrogating the Fault Memory A8 Lim. Procedure Connect the scan tool. Switch the ignition to the “ON” liition. Select “Diagnostic Mode 03: Interrogating fault memory ”. The stored DTC or DTC's will be displayed on the scan tool screen. The following table is an example of the DTC information that may be displayed on the scan tool screen: Indication example Explanation P0444 SAE Diagnostic Trouble Code (DTC) Evaporative Emission (EVAP) CanisterPurge Regulator Valve Malfunctioning wi..




Showing 51 to 60 of 134 (14 Pages)