Electric Drive Output And Control Electronics, Removing And Installing: Installing

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Install in reverse order of removal. Note the following:

WARNING:

Always follow the color coding on the high voltage cables. Interchanging the cables can cause short circuits and damage other high voltage components.

WARNING:

Working with high voltage cables:

Do not support yourself or any tool on the high voltage cables or components. This could damage the insulation.
Do not bend the high voltage cables excessively. This could damage the insulation.
The round high voltage connectors are color-coded by an exterior color ring and are mechanically coded by the guide and code tabs. Always pay attention to the coding when connecting the round high voltage connectors to prevent mechanical damage to the high voltage connectors.

NOTE:

Check the contact surfaces on the potential equalization cable before installation.

The contact surfaces must be clean. There must be no rust or grease on them.

Otherwise, clean the contact surfaces using the Contact Surface Cleaning Set VAS6410. Refer to CONTACT SURFACE CLEANING SET VAS6410 .

-- Connect the high voltage cable according to the color coding. Refer to Figure.

-- Tighten all threaded connections to the tightening specifications.

NOTE:

Connecting and securing the high voltage cables is possible only in the specified sequence.

Connect and secure the connector for the high voltage cables in reverse order of removal.

-- Make sure the red warning label is there and not damaged.

Fig 1: Identifying Electric Drive Power & Control Electronics -Jx1- Has A Red Warning Label

Courtesy of AUDI OF AMERICA, LLC

-- Energize the high voltage system.

Use only "Guided Fault Finding " in the Vehicle Diagnostic Tester to re-energize the high voltage system.

CAUTION:

Extremely dangerous voltage

Electrocution can cause death or very serious personal injury.

Only a qualified Audi high voltage technician can energize the high voltage system.
Use the Vehicle Diagnostic Tester and "Guided Fault Finding " to make sure the system is energized.
The qualified Audi high voltage technician may start the vehicle again.
The Audi high voltage technician should place a sign on the vehicle.

NOTE:

Energizing the high voltage system:

Connect the vehicle diagnostic tester

Press the Guided Fault Finding button.

Select the following menu items using the GO TO button.

Function/component selection

Body

Electrical Equipment

OBD-capable Systems

8C - Hybrid battery management -J840

8C - Hybrid battery management, functions

51 - Energizing the high voltage system (Grp. 93)

-- Bleed the low temperature coolant circuit. Refer to COOLANT, DRAINING AND FILLING, HYBRID VEHICLES .

Always perform the following procedure if the Electric Drive Power and Control Electronics -JX1- is being replaced:

Connect the Vehicle Diagnostic Tester.

-- Select Guided Fault Finding .

-- Using the GO TO button, select the following menu points:

Function/Component Selection
Body
Electrical Equipment
OBD-capable systems
51 - Electrical drive control module -J841
51 - Electric drive, functions
51 - Basic setting (Grp 93)