Audi A4 B5 facelift (1999-2001) motronic engine control module (near brake booster in protective case) Wiring diagrams

* - INFORMATION NOT AVAILABLE 8-WAY RELAY CARRIER ABS CONTROL MODULE ABS RETURN FLOW PUMP ABS RETURN FLOW PUMP RELAY ABS SOLENOID VALVE RELAY ABS/EDL HYDRAULIC UNIT (BELOW LEFT SIDE OF REAR SEAT) ANTI-SLIP CONTROL SWITCH BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BRAKE LIGHT SWITCH BRN WIRE BRN/GRN WIRE BRN/RED WIRE COMBINATION PROCESSOR DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) FUSE 13 FUSE 53 FUSE 7 FUSE PANEL FWD ONLY GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/RED WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT CLUSTER LEFT FRONT ABS INLET VALVE LEFT FRONT ABS OUTLET VALVE LEFT FRONT ABS WHEEL SPEED SENSOR LEFT FRONT BRAKE PAD WEAR SENSOR LEFT FRONT TRACTION CONTROL OUTLET VALVE LEFT FRONT TRACTION CONTROL SWITCH-OVER VALVE LEFT REAR ABS INLET VALVE LEFT REAR ABS OUTLET VALVE LEFT REAR ABS WHEEL SPEED SENSOR MOTRONIC ENGINE CONTROL MODULE (NEAR BRAKE BOOSTER IN PROTECTIVE CASE) RED WIRE RED/BLK WIRE RED/BRN WIRE RED/YEL WIRE RIGHT FRONT ABS INLET VALVE RIGHT FRONT ABS OUTLET VALVE RIGHT FRONT ABS WHEEL SPEED SENSOR RIGHT FRONT BRAKE PAD WEAR SENSOR RIGHT FRONT TRACTION CONTROL OUTLET VALVE RIGHT FRONT TRACTION CONTROL SWITCH-OVER VALVE RIGHT REAR ABS INLET VALVE RIGHT REAR ABS OUTLET VALVE RIGHT REAR ABS WHEEL SPEED SENSOR TRACTION CONTROL IND TRANSMISSION CONTROL MODULE (UNDER CARPET, FORWARD OF PASSENGER'S SEAT) VIO/BLK WIRE W/ ANTI-SLIP CONTROL W/ ANTI-SLIP CONTROL OR QUATTRO W/ ANTI-SLIP CONTROL FWD ONLY W/ ANTI-SLIP CONTROL W/ ANTI-SLIP CONTROL WHT WIRE WHT/BLK WIRE WHT/BRN WIRE YEL WIRE YEL/BLU WIRE YEL/RED WIRE

A/C CONTROL HEAD ABS CONTROL MODULE BLK WIRE BLK/BLU WIRE BLU WIRE BRN WIRE DATA LINK CONNECTOR FUSE 12 FUSE 31 FUSE PANEL (ON LEFT END OF DASH) GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/RED WIRE HEADLIGHT LEVELING CONTROL MODULE (UNDER RIGHT SIDE OF REAR SEAT) HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT CLUSTER MOTRONIC ENGINE CONTROL MODULE (NEAR BRAKE BOOSTER IN PROTECTIVE CASE) MULTI-FUNTCION STEERING WHEEL CONTROL MODULE NAVIGTION CONTROL MODULE RADIO RED WIRE RED/BLK WIRE TRANS- MISSION CONTROL MODULE (UNDER CARPET, FORWARD OF PASS SEAT) VIO WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE LIGHT SWITCH BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE CLUTCH VACUUM VENT VALVE SWITCH (ABOVE CLUTCH PEDAL, ON BRACKET) CRUISE CONTROL SWITCH FUSE FUSE 7 FUSE PANEL (ON LEFT END OF DASH) GRN WIRE GRN/VIO (OR BRN/RED) WIRE GRY WIRE GRY/WHT (OR GRY/BRN, OR GRN/RED) WIRE GRY/YEL WIRE HOT IN RUN OR START MOTRONIC ENGINE CONTROL MODULE (NEAR BRAKE BOOSTER IN PROTECTIVE CASE) RED WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE THROTTLE POSITION (TP) SENSOR (ON THROTTLE BODY) THROTTLE VALVE CONTROL MODULE (ON REAR OF ENG, ON INTAKE MANIFOLD) VIO/RED (OR BLK/GRY) WIRE WHT WIRE WHT/RED WIRE WHT/YEL (OR VIO/YEL, OR BLK/BRN) WIRE YEL WIRE YEL/BLU WIRE YEL/VIO WIRE

13-WAY RELAY CARRIER (BEHIND LEFT END OF DASH, ABOVE MICRO CENTRAL ELECTRIC) A/T BATTERY STARTER BLK (OR RED) WIRE BLK WIRE BLU WIRE BRN WIRE CHARGING SYSTEM CLUTCH PEDAL POSITION SWITCH (ABOVE CLUTCH PEDAL, ON BRACKET) IGNITION SWITCH KEY-IN IGN M/T MOTRONIC ENGINE CONTROL MODULE (NEAR BRAKE BOOSTER IN PROTECTIVE CASE) MULTI- FUNCTION TRANS- MISSION RANGE SWITCH (ON LEFT SIDE OF TRANS- MISION) OFF P/N PARK/ NEUTRAL POSITION RELAY RED WIRE RED/GRY WIRE RED/WHT WIRE WHT WIRE

3-WAY RELAY CARRIER A/C SYSTEM ABS SYSTEM, TRANSMISSIONS SYSTEM, INSTRUMENT CLUSTER SYSTEM BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/GRY WIRE BRAKE LIGHT SWITCH (ABOVE BRAKE PEDAL, ON BRACKET) BRN WIRE BRN/GRN WIRE BRN/RED WIRE CLUTCH VACUUM VENT VALVE SWITCH (ABOVE CLUTCH, ON BRACKET) CRUISE CONTROL SYSTEM FUSE 13 FUSE 130 FUSE 7 FUSE PANEL GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE GRY/YEL WIRE GYR/YEL WIRE HEATED OXYGEN SENSOR 1 (RIGHT SIDE OF ENG, ON EXHAUST MANIFOLD) HEATED OXYGEN SENSOR 2 (BEHIND 3-WAY CATALYTIC CONVERTER) HOT AT ALL TIMES HOT IN START OR RUN M/T MASS AIRFLOW (MAF) SENSOR (INSIDE AIR CLEANER HOUSING) MICRO CENTER ELECTRONIC SECONDARY AIR INJECTION (AIR) PUMP RELAY MOTRONIC ENGINE CONTROL MODULE (NEAR BRAKE BOOSTER IN PROTECTIVE CASE) NCA WIRE RED WIRE RED/BLK WIRE RED/BRN WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE SECONDARY AIR INJECTION PUMP MOTOR (LOWER RIGHT FRONT CORNER OF ENG COMPT) THROTTLE POSITION (TP) SENSOR (ON THROTTLE BODY) VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/RED WIRE YEL/VIO WIRE

A/C SYSTEM BACK-UP LIGHT SWITCH BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BRAKE LIGHT SWITCH (ABOVE BRAKE PEDAL, ON BRACKET) BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/RED WIRE CLUTCH VACUUM VENT VALVE SWITCH (ABOVE CLUTCH PEDAL, ON BRACKET) CRUISE CONTROL SYSTEM FUSE 13 FUSE 7 FUSE PANEL FUSE 231 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE GRY/YEL WIRE GYR/YEL WIRE HEATED OXYGEN SENSOR 1 (BEHIND RIGHT CYLINDER HEAD, ON EXHAUST MANIFOLD) HEATED OXYGEN SENSOR 2 (BEHIND RIGHT CYLINDER HEAD, ON EXHAUST MANIFOLD) HOT AT ALL TIMES IGNITION SWITCH INSTRUMENT CLUSTER SYSTEM M/T MASS AIRFLOW (MAF) SENSOR (IN AIR CLEANER ASSEMBLY) MOTRONIC ENGINE CONTROL MODULE (NEAR BRAKE BOOSTER IN PROTECTIVE CASE) NCA WIRE OFF OXYGEN SENSOR 1 (BEHIND 3-WAY CATALYTIC CONVERTER) OXYGEN SENSOR 2 (BEHIND 3-WAY CATALYTIC CONVERTER) RED WIRE RED/BLK WIRE RED/BRN WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RUN WIRE THROTTLE POSITION (TP) SENSOR (ON THROTTLE BODY) VIO WIRE WHT WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/RED WIRE YEL/VIO WIRE

ANTI-LOCK BRAKES SYSTEM BATTERY BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/WHT WIRE CAMSHAFT ADJUSTMENT VALVE 1 (ON REAR OF RIGHT CYLINDER HEAD) CAMSHAFT ADJUSTMENT VALVE 2 (ON FRONT OF LEFT CYLINDER HEAD) CAMSHAFT POSITION (CMP) SENSOR 1 (REAR OF LEFT CYLINDER HEAD) CAMSHAFT POSITION (CMP) SENSOR 2 (FRONT OF RIGHT CYLINDER HEAD) CRUISE CONTROL SYSTEM DISTRIBUTOR IGNITION CAPACITOR DTI FUEL INJECTORS FUEL PUMP (IN FUEL TANK) FUEL PUMP RELAY FUSE 228 FUSE 234 FUSE PANEL FUSE 229 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE GRY/YEL WIRE HOT IN START OR RUN MICRO CENTRAL ELECTRIC IGNITION COIL MOTRONIC ENGINE CONTROL MODULE (NEAR BRAKE BOOSTER IN PROTECTIVE CASE) NCA WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE THROTTLE VALVE CONTROL MODULE (ON REAR OF ENG, ON INTAKE MANIFOLD) TO SPARK PLUGS TURN SIGNAL SWITCH, AIR BAG CONTROL MODULE VIO WIRE VIO/BLU WIRE VIO/RED WIRE WHT WIRE WHT/YEL WIRE YEL WIRE YEL/VIO WIRE YEL/WHT WIRE