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Checking cooling output of air conditioner (not for vehicles with a high-voltage system) > < Removing and installing supply air duct for drive batteryA2

A4 Mk3

Removing and installing left and right air ducts at drive batteryA2
Removing and installing left and right air ducts at drive battery -A2-
Vehicles with a high-voltage system (hybrid vehicles)
For all work on vehicles with a high-voltage system, pay attention to the additional warnings for such vehicles → Chapter and → Electrical system; Rep. gr.93.
As work in the vicinity of high-voltage system components is necessary for the following sequence of operations, perform „Visual inspection of high-voltage components and cables for damage“ → Chapter and heed the „General warnings for working on high-voltage system“ → Electrical system; Rep. gr.93
  WARNING
Danger from unexpected engine starting
When performing general work on vehicles with a high-voltage system, switch off the ignition and remove the ignition key from the passenger compartment.
  WARNING
Working on vehicles with high-voltage wiring:
l  Do not support yourself or tools on high-voltage wiring or associated components --> this can damage the insulation.
l  High-voltage wiring must not be excessively bent or kinked --> this can damage the insulation.
l  The round high-voltage connectors are colour-coded with an external coloured ring and are provided with mechanical coding or guide lugs. It is important to observe this coding when joining up the round high-voltage connectors, otherwise the connectors can be damaged.
  DANGER!
Risk of fatal injury if high-voltage components are damaged.
Observe the following when working in the vicinity of high-voltage components or wiring:
t  It is not permitted to use cutting or forming tools, other sharp-edged tools or heat sources such as welding, brazing, soldering, hot air or thermal bonding equipment.
t  Before starting work, visually inspect the high-voltage components in the areas involved.
t  Before working in the engine compartment, visually inspect the power electronics -JX1-, electric drive motor -V141-, air conditioner compressor -V470- and high-voltage wiring.
t  Before working on the vehicle underbody, visually inspect the high-voltage wiring and covers.
t  Before working on the rear section of the vehicle, visually inspect the high-voltage wiring and the electro-box with the maintenance connector for high-voltage system - TW -.
t  Visually inspect all potential equalisation lines.
Check the following when making the visual inspection:
t  There must be no external damage on any component.
t  The insulation of the high-voltage wiring and potential equalisation lines must not be damaged.
t  There must be no unusual deformation of the high-voltage wiring.
t  All high-voltage components must be identified by a red warning sticker.
Removing
   
–  Switch off the ignition.
  Note
Removal of the air ducts involves taking out the drive battery on vehicles provided with the additional bolted joints -1- and -3-.
Vehicles with additional bolted joints for air ducts:
–  Remove the drive battery → Electrical system; Rep. gr.93.
–  Screw out the bolts -1, 2, 3- and detach the air ducts.
Vehicles without additional bolted joints for air ducts:
–  Remove the relevant front holder for the luggage compartment floor → General body repairs, interior; Rep. gr.70.
–  Screw out the bolts -2- and carefully unclip the air ducts from the fasteners.
  A87-11136
Installing
Install in reverse order; paying attention to the following:
  Caution
If the air duct fasteners no longer hold, the air ducts must be secured with additional bolts -1, 3-. This involves removing the drive battery → Electrical system; Rep. gr.93.
  A87-11136

Checking cooling output of air conditioner (not for vehicles with a high-voltage system) > < Removing and installing supply air duct for drive batteryA2