audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Removing and installing temperature sensor -G756 upstream of evaporator and -G757 downstream of evaporator for hybrid battery > < Air ducts at battery cooling module
Components of battery cooling module
Components of battery cooling module
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.
  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.
  Note
The add-on components are actuated by the battery regulation control unit -J840- → "Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051
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
   
1 - Condensation drain
q   Checking, removing and installing → Chapter
2 - Bonded rubber bush
3 - Nut
q   9 Nm
4 - Battery cooling module
q   Moving to service position → Chapter
q   Removing and installing → Chapter
5 - Bolt
q   Tightening torque 10 Nm → Chapter „Removing and installing expansion valve with refrigerant shut-off valve 2 for hybrid battery -N517-“
6 - Expansion valve with refrigerant shut-off valve 2 for hybrid battery -N517-
q   Removing and installing → Chapter
7 - O-rings
q   Replace
8 - Retaining clip
9 - Bolt
q   1.5 Nm
10 - Control motor for air recirculation flap 1 for hybrid battery -V479-
q   Removing and installing → Chapter
11 - Bolt
q   1.5 Nm
12 - Control motor for air recirculation flap 2 for hybrid battery -V480-
q   Removing and installing → Chapter
13 - Temperature sensor upstream of evaporator for hybrid battery -G756-
q   Removing and installing → Chapter
14 - Battery fan 1 -V457-
q   Removing and installing → Chapter
15 - Bolt
q   1.5 Nm
16 - Temperature sensor downstream of evaporator for hybrid battery -G757-
q   Removing and installing → Chapter

   
Bonded rubber bush - installation position
l  The collar -arrow- at the bonded rubber bush -1- faces upwards.
  A87-11138

Removing and installing temperature sensor -G756 upstream of evaporator and -G757 downstream of evaporator for hybrid battery > < Air ducts at battery cooling module