Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2004A4 SEDAN (8E2) L4-1.8L TURBO (AMB)REPAIR AND DIAGNOSISDIAGRAMSCONNECTOR VIEWSNAVIGATION SYSTEM
2004 Audi A4 Sedan (8E2) L4-1.8L Turbo (AMB)
Navigation System
2004 Audi A4 Sedan (8E2) L4-1.8L Turbo (AMB)SECTION Navigation System
Connectors At Rear Of Control Module For Navigation With CD-mechanism -J401-
1 - GPS antenna connection
2 - Retainer bar for antenna connection
3 - Multi-pin connector I, 20-pin, consists of
Partial connector, 6-pin, yellow
Partial connector, 6-pin, green
Partial connector, 8-pin, blue
4 - Fuse
5 - Multi-pin connector II, 8-pin, brown
6 - Multi-pin connector III, 8-pin, black
7 - Multi-pin connector IV, 10-pin, red
Contact assignment of multi-pin connectors I, II, III, and IV on rear side of Control module for navigation with CD-mechanism -J401-
NOTE: Connector contacts not listed have not been assigned.
Multi-pin connector I, 20-pin
2 - CAN high display
5 - CAN low display
13 - Low frequency + (speech messages)
14 - Radio mute(output)
15 - Low frequency - (speech messages)
16 - Telephone low frequency (+)
17 - Telephone mute (input)
19 - Telephone low frequency (-)
Multi-pin connector II, 8-pin, brown
Not used
Multi-pin connector III, 8-pin, black
1 - Gala (speed signal)
2 - Reversing light switch
3 - L diagnostic
4 - Terminal 15
7 - Terminal 30
8 - Terminal 31
Multi-pin connector IV, 10-pin, red
Not used
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.