Audi-Resource - Central Electrics 11

Coding the control unit

The code is composed as follows:

0 X X X X X X : Blank

0 X X X X X : Footwell light fitted as lamp

1 X X X X X : Footwell light fitted as LED

0 X X X X : Halogen headlights or halogen headlights without LED daylight driving lights

1 X X X X : Bi-xenon headlights*

2 X X X X : Bi-xenon headlights without LED daylight driving lights

3 X X X X : Bi-xenon headlights with LED daylight driving lights and AFS

4 X X X X : Bi-xenon headlights with separate 21W halogen daylight driving lights and AFS

0 X X X: Without automatic driving lights (AUTO)

1 X X X: With automatic driving lights (AUTO) with light sensor -G399**

3 X X X: With automatic driving lights (AUTO) with rain and light sensor -G397

0 X X: Without daytime running lights

1 X X: With daylight driving lights

0 X: Daylight driving lights not selectable via MMI

1 X: Daylight driving lights selectable*** via MMI (default: Off)

2 X: Daylight driving lights selectable*** via MMI (default: On)

1 : Rest of the World

2 : Nordic countries (Finland, Sweden, Norway, Denmark)

3 : USA

4 : Canada

5 : Vacant

6 : Vacant

7 : Special-purpose vehicles

*Applies only to vehicles up to and including part number index E

**Sensor -G399 is coded in the roof electronics control unit -J528

***Only if daylight driving lights coded (3rd digit from right = 1)

Abbreviations:

MMI: Multi Media Interface

AUTO: Automatic driving lights (identifiable by light switch) with light sensor

AFS = AdvancedFrontlightingSystem

Coding example: 0000001

Blank, footwell light fitted as lamp, halogen headlights / halogen headlights without automatic driving lights, without daytime running lights (AUTO), without daytime running lights, daytime running lights not selectable via MMI, Rest of the World

Reading measured value block

The following measured values are displayed:

Input signals:

Measured value block 001:

Voltage supply terminal 30 (in V)

Vacant

Rotary light switch (off, stage 1*, stage 2**, stage 3***, stage 4****, stage 5*****)

Hazard warning indicator button****** (pressed/unpressed)

* Automatic driving light

** Side lights

*** Dipped beam

**** Fog light

***** Fog tail light

****** Hold button pressed down

Measured value block 002:

Steering column adjustment -axial-*

Steering column adjustment -Vertical-**

Steering column adjustment -Memory-***

Steering column adjustment -Status-****

* A Hall sender counts the pulses of the steering column adjuster motor in axial direction

** A Hall sender counts the pulses of the steering column adjuster motor in vertical direction

*** Memory locations of steering column adjustment motor 1/2/3/4/5/6/7/8

**** Storage mode 0/1 (Bit7)

Memory mode 0/1 (Bit6)

Manual adjustment 0/1 (Bit5)

Standby 0/1 (Bit4)

Out 0/1 (Bit3)

In 0/1 (Bit2)

Down 0/1 (Bit1)

Up 0/1 (Bit0)

Measured value block 003:

Bonnet contact switch (off/on)

Vacant

Output signals:

Measured value block 004:

Side light, left (off/on)

Side light, right (off/on)

Dipped beam, left (off/on)

Dipped beam, right (off/on)

Measured value block 005:

Main beam, left (off/on)

Main beam, right (off/on)

Fog light, left (off/on)

Fog light, right (off/on)

Measured value block 006:

Front left turn signal indicator (off/on)

Front right turn signal indicator (off/on)

Left side turn signal indicator (off/on)

Right side turn signal indicator (off/on)

Measured value block 007:

Footwell light front left (off/on/duty cycle*)

Footwell light front right (off/on/duty cycle*)

Xenon shutter (off/on)

Vacant

*Duty cycle in %

Measured value block 008:

Terminal 58 (off/on)

Hazard warning indicator button -LED- (off/on/dimming*)

Lamp for daylight driving light, left -L174** (on/off/dimming value*)

Lamp for daylight driving light, right -L175** (on/off/dimming value*)

*Dimming value in %

**LED

Measured value block 009:

Horn (off/on)

Vacant

Input signals from Group convenience system data bus:

Measured value block 010:

Main beam from SMLS* (off/on/no communication)

Headlight flash from SMLS* (off/on/no communication)

Left turn indicator from SMLS* (off/on/no communication)

Right turn indicator from SMLS* (off/on/no communication)

*J527 - Steering column electronics control unit

Measured value block 011:

Road speed signal (no communication/km/h)

Collective bit door (door c.ON/door c.OFF/no communication)

Vacant

Measured value block 012:

Wipe from SMLS** (off/touch/stage int./stage 1*/stage 2/no communication)

Wash from SMLS** (/off/on/no communication)

Intermittent*** from SMLS**(0/1/5/9/13)

Service setting from MMI**** (off/on/no communication)

*Single-wipe is also indicated here

**J527 - Steering column electronics control unit

***Potentiometer setting on wiper switch -E22 (speeds are indicated when wiper switch is in intermittent mode)

1 = Stage 1

5 = Stage 2

9 = Stage 3

13 = Stage 4

****MMI = Multi Media Interface

Measured value block 013:

Vacant

Terminal 15 (off/on/no communication)

Terminal X (off/on/no communication)

Terminal 50 (off/on/no communication)

Output signals to Group convenience system data bus:

Measured value block 014:

Coming Home (time in s)

Leaving Home (disabled/activated*)

Vacant

*When the Leaving Home function has been triggered (vehicle's fog headlights, rear lights and number plate lighting on)

LIN devices:

Measured value block 015:

LIN1 Slave1* (Slave_One 0/Slave_One 1)

LIN1 Slave2** (Slave_Two 0/Slave_Two 1)

Vacant

*J400 - Wiper motor control unit

**G397 - Rain and light sensor

LIN input signals:

Measured value block 016:

Communication error bit, wipe angle control (off/on*/no communication)

Vacant

*On means a fault has occurred

Measured value block 017:

Lights on/off (off/on/no communication)

Brightness (0 to 7)

Rain sensor gush (off/on/no communication)

Rainfall (0 to 7)

Measured value block 018:

Wiper on (off/on/error/no communication-LIN passive)

Washer on (off/on/error/no communication-LIN passive)

Parked (off/on/no communication-LIN passive)

Reverse position (off/on/no communication-LIN passive)

CAN users:

Measured value block 125:

Gateway* (Gateway 0/Gateway 1)

FPI** (F-Ident 0/F-Ident 1)

DAS*** (El.ign.lock 0/El.ign.lock 1)

Vacant

*J533 – Data bus diagnostic interface

**J589 - Driver identification control unit

***J518 - Access and start authorisation control unit for convenience system CAN

Measured value block 126:

ILM-rear* (Central 0/Central 1)

DCU-D** (D.door 0/D.door 1)

SMLS*** (Steering wheel 0/Steering wheel 1)

Vacant

*J393 - Convenience system central control unit

**J386 - Door control unit, driver side

***J527 - Steering column electronics control unit

Measured value block 127:

Seat memory* (MemorySteer 0/MemorySteer 1)

Roof module** (roof elec. 0/Roof elec. 1)

Battery Manager*** (Batt.Manager 0/Batt.Manager 1)

Data bus IPM-driver**** (one-wire/two-wire/no communicationABus-Off)

*J136 - Control unit for seat adjustment with memory

**J528 - Roof electronics control unit

***J644 - Energy management control unit

****Status of Group convenience system data bus

Reading measured value block

When the ignition is switched on the following input signal for terminal 15 is generated by the Group convenience system data bus in the onboard power supply control unit -J519:

Measured value block 013:

Display zone 2:

Terminal 15 (off/on/no communication)

Basic setting

Procedure:

After replacing the vehicle voltage control unit -J519, the steering column adjustment mechanism and steering column adjustment components*, a basic setting of the two steering column adjuster motors -V123 (vertical) and -V124 (horizontal) must be carried out.

To do so, choose the basic setting function 04 and then channel 001 and activate the basic setting.

* When replacing the steering column adjuster or components of it, be sure to approach its four end positions (up, down, forward and back) with the steering column adjustment switch -E167 before performing the basic setting.

Interrogating control unit version

The readout signifies:

J 4E0 907 279...:

Part number of onboard power supply control unit -J519

J ILM driver:

Component designation for onboard power supply control unit -J519

J H10:

Hardware status of the control unit

J 0040:

Software status of the control unit

In the event of changes to the software or hardware the respective status is counted up

J Coding 0010011:

Code of onboard power supply control unit -J519

J Workshop code:

Dealership number of the workshop

Additional readout on Audi A8:

LIN device 1

J 4E1 910,113 :

Subsystem recognition* - wiper motor control unit -J400

J Wiper WWS D3:

Component designation for wiper motor control unit -J400

J H30:

Hardware status of the control unit

J 0310:

Software status of the control unit

In the event of changes to the software or hardware the respective status is counted up

J Code 31:

Code of wiper motor control unit -J400 for new vehicles

J Workshop code:

Dealership number of the workshop

if fitted

LIN device 2

J 4E0 910 557:

Subsystem recognition* - rain and light sensor -G397

J RAIN/LIGHT SENSOR:

Component designation for rain and light sensor -G397

JH07:

Hardware status of sensor

J 0310:

Software status of sensor

In the event of changes to the software or hardware the respective status is counted up

J Code 139548:

Coding of rain and light sensor -G397 referred to fitted windscreen

J Workshop code:

Dealership number of the workshop

*LIN bus