NHTSA ID Number: 10118334
Manufacturer Communication Number: SSP 970563 A
TSB/Document Date: 2017-10-04
Summary
This Self-Study Program helps answer where the fuse and relay panels are located in the Audi
A4, what locations are electrical components installed on the car, which bus systems are used in the car, what the tasks are for the control modules, what are the versions of the exterior lighting and how the individual light functions are implemented in the vehicle.
ABS
Control Module
J104
Power Steering
Control Module
J500
Steering Column
Electronics Control Module
J527
Engine
Control Module
J623
Transmission
Control Module
J217
Driver Assistance
Systems Front
Camera
R242
Drivetrain
Control Module
J775
Branch 1
Branch 2
Branch 3
Data Bus On Board Diagnostic Interface
J533
Branch 5
Branch 4
Airbag
Control Module
J234
Branch 8
Distance Regulation Control
Module 2
J850
Active Steering
Control Module
J792
Distance
Regulation
Control Module
J428
All Wheel Drive
Control Module
J492
646_052
A control module from the vehicle's standard specification
is always connected at the end of a branch. This ensures
that there is a resistance of 94 Ω at the end of each branch.
Two optional control modules, which are integrated in
other models as center control modules, are connected to
branch 8 in the Audi A4. The FlexRay line is routed back to
J533. The resistance here is 94 Ω - the value required for
the termination of branch 8.
In configuring of the control modules, a distinction is made
between the bus positive cable (pink) and the bus negative
cable (green).
Two resistors each having a resistance of 47 Ω (94 Ω in
total) are always connected at the beginning and end of a
branch. Each of the center control modules has two resistors with a resistance of 1.3 Ω, i.e. 2.6 Ω in total.
J500
J104
47 Ω
47 Ω
47 Ω
J527
47 Ω
47 Ω
47 Ω
J623
J217
R242
1.3 kΩ 1.3 kΩ
1.3 kΩ 1.3 kΩ
1.3 kΩ 1.3 kΩ
J775
1.3 kΩ 1.3 kΩ
Branch 1
47 Ω
47 Ω
47 Ω
47 Ω
Branch 4
47 Ω
47 Ω
J234
Branch 2
J533
47 Ω
47 Ω
47 Ω
47 Ω
Branch 5
Branch 3
47 Ω
47 Ω
47 Ω
47 Ω
47 Ω
47 Ω
Branch 8
1.3 kΩ 1.3 kΩ
1.3 kΩ 1.3 kΩ
J850
J792
47 Ω
47 Ω
J428
1.3 kΩ 1.3 kΩ
J492
646_053
13
Control units
Brief descriptions
Vehicle Electrical System Control Module J519
646_012
Connector C (54-pin)
to cockpit wiring harness
14
Connectors A and B (each 73-pin)
to vehicle / engine compartment
Designation
Vehicle Electrical System Control Module J519 /
also referred to as BCM1 (Body Control Module 1)
Equipment
Always installed
Installation location
On left ‘A’ pillar above the hood release lever
Tasks
Exterior lighting master
Interior lighting master
Diagnostic gateway for the light control modules
A/C functions
• Activation of seat heater and front seat ventilation
• Activation of A/C Compressor Regulating Valve N280
Integration functions
• Parking
• Parking aid
• Ambient lighting
• Activation and supply of LIN interior light modules
• Headlight range adjustment
• Calculation of headlight range adjustment
• Activation of headlight range adjustment via the left and right control modules for light
control J1018 and J1023.
• Reading input of the signals from the inclination sensor via the CAN line
Other functions
• Reading input from (senders/sensors/switches)
• Ambient temperature
• Engine coolant, windshield washer fluid, brake fluid
• Brake pad wear
• Hood contact
• Seater heater temperature
• Activation (actuators/control elements)
• Relay for sockets
• Signal horn
• Headlight washer system
• Windshield washer pump (dual pump)
• Heating the windshield washer jets
• Seat heater, front
Address Word
09
Data bus communication
• Convenience CAN participant
• J519 is the LIN master for
• LIN 1: Light Switch E1, Wiper Motor Control Module J400, Rain/Light Recognition
Sensor G397, and Humidity Sensor G355
• LIN 2: Garage Door Opener Control Head E284, Garage Door Opener Control Module J530,
Automatic Dimming Interior Rearview Mirror Y7, Roof Electronics Control Module J528
• LIN 3: Left Front Seat Backrest Fan 1 V512, Left Front Seat Cushion Fan 1 V514, Right
Front Seat Backrest Fan 1 V516, Right Front Seat Cushion Fan 1 V518
• LIN 4: Control Unit 1 for Driving And Convenience Functions E791
• LIN 5: Interior light module
• LIN 6: Interior light module
• Communicates via a sub-bus system with Left and Right Light Control Modules J1018 and
J1023, and Left and Right LED Headlamp Power Output Modules A31 and A27 and left and
right LED headlight power modules 1 A31 and A27
Special feature
Fault finding notes:
J519 has duplicated pins at the LIN slave connection. For example, LIN 1 is distributed to
3 pins (A22, A23,C50), which, however, are connected internally within the control module.
This means that the control modules connected to pin A23 and C50 are also affected in the
event of a short circuit to positive or negative at pin A22 and vice versa.
15
Gateway
Designation
Data Bus On Board Diagnostic Interface J533
Equipment
Always installed
Installation location
Under the rear seat, on the floor pan
Tasks
•
•
•
•
•
Address Word
19
Data bus communication
• Hybrid CAN, Convenience CAN, Infotainment CAN, CAN-Extended and FlexRay user
• LIN master of Battery Monitoring Control Module J367 and alternator C
• LIN master for Multifunction Steering Wheel Control Module J453
Special features
• Not a user of the Modular Infotainment Platform (MIB) CAN
• Not a user of the MOST bus
• Additional variant as "Connected Gateway"
Network system Gateway
Controller for FlexRay bus
Diagnostic master
Energy management control
Interface for various connect services
646_011
Data Bus On Board Diagnostic Interface
J533
16
Comfort System Central Control Module
Designation
Comfort System Central Control Module J393 /
also referred to as BCM2 (Body Control Module 2)
Equipment
Always installed
Installation location
In luggage compartment on left hand side, behind luggage compartment side trim, under
fuse and relay panel
Tasks
Central locking system master
Integration functions
• Terminal management system
• Entry and start authorization
• Immobilizer (master)
• Anti-theft alarm system
Other functions
• Reading input (senders/sensors/switches)
• Brake light switch
• Ignition starter button
• P signal
• Soft touch button on rear hatch
• Rear hatch contacts (pre-lock and full lock)
• Capacitive sensors of door handles
• Entry and start authorization aerials
• Fuel tank sender
• Inclination sensors for headlight range adjustment
• Activation (actuators/control elements)
• Rear hatch lock motor
• Luggage compartment release
• Fuel tank flap lock
• Terminal 15 relay
• Heated rear window relay
• Luggage compartment lights
• Rear lighting
Address Word
46
Data bus communication
• Convenience CAN participant
• J393 is the LIN master for:
• LIN 1: Anti-Theft Alarm System Sensor G578
• LIN 2: Alarm Horn H12
• LIN 3:
Special features
• J393 is the immobilizer system master in the Audi A4
• Central locking antenna is integrated in control module
Comfort System Central Control Module
J393
646_013
17
Door control modules
Designation
Driver Door Control Module J386
Equipment
Always installed
Installation location
In driver's door
Tasks
Controlling the electrical and electronic components in and on the driver's door
• Reading input (senders/sensors/switches)
• Switches/buttons, for example, power windows, rear hatch release, child lock button,
door mirror, central locking, seat memory etc.
• Activation (actuators/control elements)
• Lights and components in and on the door trim, locking motor, turn signals in door
mirror
Address Word
42
Data bus communication
• Convenience CAN participant
• LIN master for Driver Side Rear Door Control Module J926
Special feature
J926 has its own Address Word "BB" although it is a LIN slave of J386.
Driver Door Control Module
J386
646_014
Designation
Front Passenger Door Control Module J387
Equipment
Always installed
Installation location
In front passenger's door
Tasks
Controlling the electrical and electronic components in and on the front passenger's door
• Reading input (senders/sensors/switches)
• Switches/buttons, for example, power windows, rear hatch release, child lock button,
electrical door mirror, central locking, seat memory etc.
• Activation (actuators/control elements)
• Lights and components in and on the door trim, locking motor, turn signals in door
mirror
Address Word
52
Data bus communication
• Convenience CAN participant
• LIN master for Passenger Side Rear Door Control Module J927
Special feature
J927 has its own Address Word "BC" although it is a LIN slave of J386.
18
Seat adjustment
Designation
Memory Seat/Steering Column Adjustment Control Module J136
Equipment
Optional equipment (PR no.: PV3)
Installation location
Below the driver's seat
Tasks
Activation (actuators/control elements)
• Seat adjustment (memory function)
Address Word
36
Data bus communication
Convenience CAN participant
Memory Seat/Steering Column
Adjustment Control Module
J136
646_015
19
Steering column lock control
Designation
Electronic Steering Column Lock Control Module J764
Equipment
• Always installed
Installation location
On steering column
Task
Locking and unlocking the steering column
Address Word
2B
Data bus communication
Convenience CAN participant
Special features
• Immobilizer user
• Can be replaced separately from the steering column
Electronic Steering Column Lock Control Module
J764
646_017
Power sunroof control
Designation
Power Sunroof Control Module J245
Equipment
Always installed
Installation location
On sliding sunroof frame at front
Tasks
Controlling the functions of the glass sunroof
• Reading input (senders/sensors/switches)
• Controller for sliding sunroof adjustment
• Activation (actuators/control elements)
• Motors for Sunroof Motor V1
Address Word
CA
Data bus communication
Convenience CAN participant
Power Sunroof Control Module
J245
646_018
20
Instrument cluster
Designation
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TSB/Document ID: SSP 970563 A
Replacement Service Bulletin Number:
MFR Communication Date: 2015-01-12
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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