Page 1 of 8 Audi A4 Current Flow Diagram No. 50 / 1 Edition 12.2003 5-speed automatic gearbox with Tiptronic From model year 2002 Main fuse On battery Fuse box Dash panel, driver's side Fuse colours 30 A - green
Page 2 of 8 25 A - white 20 A - yellow 15 A - blue 10 A - red 7.5 A - brown 5 A - beige Note: From fuse number 23 upwards the fuses in the fuse box are designated as 223 etc. in the Current Flow Diagram. Connector point with screw connection In electronics box, 1-10-pin connector, black (T10) 2-10-pin connector, brown (T10a) 3-17-pin connector, red (T17d) 6-17-pin connector, white (T17e) 4-point relay carrier
Page 3 of 8 In electronics box, 3 - Terminal 30 voltage supply relay (J317) 4 - Automatic gearbox relay (J60) A - Engine control unit fuse (S102) Fuse colours 15 A - blue 4-point relay carrier with screw connection Dash panel, driver's side
Page 4 of 8 Audi A4 Current Flow Diagram No. 50 / 2 Voltage supply A - Battery D - Ignition/starter switch S88 - Strip fuse T10a - 10-pin connector, brown, connector point, electronics box, T17e - 17-pin connector, white, connector point, electronics box, - Earth point, in battery box 11 12 83 500 501 A2 - Earth point, in engine compartment, left - Earth connection -1-, in front right wiring harness - Screw connection -1- (30), on relay plate - Screw connection -2- (30), on relay plate - Positive (+) connection (15), in dash panel wiring harness A32 A98 - Positive (+) connection (30), in dash panel wiring harness - Positive (+) connection -4- (30), in dash panel wiring harness D50 - Positive (+) connection (30), in engine compartment wiring harness F33 - Positive (+) connection (30), in diesel direct injection system wiring harness * - Only applies to models with diesel engine ** - Only applies to models with petrol engine Audi A4 Current Flow Diagram No. 50 / 3
Page 5 of 8 Automatic gearbox control unit, Tiptronic switch F189 - Tiptronic switch J519 - Onboard power supply control unit N110 - Selector lever lock solenoid S5 - Fuse in fuse box/relay plate S231 - Fuse in fuse box T10j - 10-pin connector, black, on Tiptronic switch T17e - 17-pin connector, white, connector point, electronics box, T32b - 32-pin connector, grey, on onboard power supply control unit - Earth connection -1-, in interior wiring harness 238 A19 A70 A74 B132 - Connection (58d), in dash panel wiring harness - Connection (15a, fuse 231), in dash panel wiring harness - Connection (15a, fuse 5), in dash panel wiring harness - Connection (number plate light), in interior wiring harness * - As of model year 2003 no longer fitted
Page 6 of 8 Audi A4 Current Flow Diagram No. 50 / 4 Automatic gearbox control unit, solenoid valves G93 - Gearbox oil temperature sender G182 - Gearbox input speed sender G195 - Gearbox output speed sender N88 - Solenoid valve 1 N89 - Solenoid valve 2 N90 - Solenoid valve 3 N215 - Automatic gearbox pressure control valve -1- N216 - Automatic gearbox pressure control valve -2- N217 - Automatic gearbox pressure control valve -3- N218 - Automatic gearbox pressure control valve -4- T16g - 16-pin connector, black, on gearbox Audi A4 Current Flow Diagram No. 50 / 5
Page 7 of 8 Automatic gearbox control unit, multi-function switch B - Starter F125 - Multi-function switch J60 - Automatic gearbox relay M16 - Reversing light bulb, left M17 - Reversing light bulb, right T1 - Single connector, black, engine compartment, right T10a - 10-pin connector, brown, connector point, electronics box, T17d - 17-pin connector, red, connector point, electronics box, - Earth connection -1-, in front right wiring harness 83 A87 D51 U2 - Connection (RF (reversing light)), in dash panel wiring harness - Positive (+) connection -1- (15), in engine compartment wiring harness - Connection -1- (15), in automatic gearbox wiring harness * - For 1.8 litre and 2.0 litre engine: connector T1d ** - Only applies to models with petrol engine *** - Only applies to models with diesel engine **** - Phased-in modification
Page 8 of 8 Audi A4 Current Flow Diagram No. 50 / 6 Automatic gearbox control unit, dash panel insert J... - Engine control units J285 - Control unit with display in dash panel insert J317 - Terminal 30 voltage supply relay T10a - 10-pin connector, brown, connector point, electronics box, T16-16-pin connector, black, diagnostic connector T17d - 17-pin connector, red, connector point, electronics box, T32a - 32-pin connector, green, on dash panel insert S102 - Engine control unit fuse V274 - Fan for control unit - Earth connection -1-, in front right wiring harness 83 A76 A121 A122 - Connection (diagnosis wire K), in dash panel wiring harness - Connection (high bus), in dash panel wiring harness - Connection (low bus), in dash panel wiring harness D103 D173 D159 D160 - Connection -3-, in engine compartment wiring harness - Connection (87), in engine wiring harness - Connection (high bus), in engine compartment wiring harness - Connection (low bus), in engine compartment wiring harness * - Only applies to models with petrol engine ** - Only applies to models with diesel engine (2.5 litre - TDI) - Data bus wire (CAN bus)