Audi A8 D2 facelift (1999-2002) nca Wiring diagrams

AIR QUALITY SENSOR BLK WIRE BLK/RED WIRE BLOWER FAN FUSE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE CENTRAL ELECTRIC PANEL COOLANT FAN COOLANT FAN CONTROL RELAY COOLANT FAN CONTROL SERIES RESISTANCE (LOWER LEFT FRONT OF ENGINE COMPT) COOLANT FAN CONTROL THERMAL SWITCH (LOWER RIGHT SIDE OF RADIATOR) COOLANT FAN FUSE FUSE FUSE PANEL (RIGHT FRONT FOOT- WELL) GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GRY BRN/ WIRE HOT AT ALL TIMES HOT W/ LOAD REDUCTION RELAY ENERGIZED LEFT CENTER VENT SWITCH (BEHIND UPPER LEFT CENTER OF DASH, ON VENT) NCA WIRE RED WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE SECOND SPEED COOLANT FAN CONTROL RELAY (BELOW LEFT SIDE OF DASH) SOLAR CELLS SOLAR OPERATION CONTROL MODULE SOLID STATE THIRD SPEED COOLANT FAN CONTROL RELAY (BELOW LEFT SIDE OF DASH) VIO/RED WIRE WHT/RED WIRE YEL/GRN WIRE

-1 +2 A/C CLUTCH A/C CLUTCH RELAY (ON RIGHT FRONT FOOTWELL E-BOX RELAY PANEL) A/C CONTROL HEAD A/C PRESSURE SWITCH BLK WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CENTER VENT POSITION SENSOR (BEHIND UPPER CENTER OF DASH, ON HVAC ASSEMBLY) COMPUTER DATA LINES SYSTEM COOLANT PUMP (LEFT REAR OF ENGINE COMPT) DATA LINK CONNECTOR FUSE FUSE PANEL (RIGHT FRONT FOOTWELL) FUSE GRN WIRE GRN/BLU WIRE GRN/RED WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT IN RUN AND START INSTRUMENT CLUSTER COMBINATION PROCESSOR LEFT HEAT REGULATING VALVE NCA WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT CENTER VENT SWITCH (BEHIND UPPER RIGHT CENTER OF DASH, ON VENT) RIGHT HEAT REGULATING VALVE SOLID STATE VIO/RED WIRE WHT/BRN WIRE WHT/VIO WIRE WIPER/WASHER SYSTEM YEL/BLU WIRE YEL/RED WIRE

BLK WIRE BLK/WHT WIRE BLU WIRE BOARD COMPUTER FUNCTION SELECTOR SWITCH BOARD COMPUTER FUNCTION SELECTOR SWITCH II BRN WIRE BRN/BLK WIRE BRN/YEL WIRE FUSE FUSE PANEL GRN WIRE GRN/RED WIRE GRY WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT IN RUN AND START HOT WITH HIGH BEAMS ON IGNITION SWITCH KEY SWITCH LEFT BRAKE PAD WEAR INDICATOR ELEMENT NCA WIRE OIL LEVEL THERMAL SENSOR (SRI) PLENUM CHAMBER E-BOX RELAY & FUSE PANEL (IN PLENUM CHAMBER E-BOX) RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT BRAKE PAD WEAR INDICATOR ELEMENT VIO WIRE VIO/BLU WIRE WHT WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/GRY WIRE

BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BLU/YEL WIRE BOARD COMPUTER FUNCTION SELECTOR SWITCH II BRN WIRE BRN/RED WIRE BRN/YEL WIRE COMBINATION PROCESSOR DATA LINK CONNECTOR (RAPID DATA TRANSFER) (BELOW LEFT SIDE OF DASH) FUSE FUSE PANEL GRN WIRE GRN/RED WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT IN RUN OR START INSTRUMENT CLUSTER MULTI- FUNCTION TRANSMISSION RANGE SWITCH (ON LEFT SIDE OF TRANSMISSION) NAVIGATION CONTROL UNIT NAVIGATION SYSTEM ANTENNA NCA WIRE ORG/BRN WIRE ORG/VIO WIRE RADIO RED WIRE RED/YEL WIRE TELEPHONE TRANSCEIVER (IF EQUIPPED) VIO/BLU WIRE WHT WIRE WHT/BLU WIRE YEL WIRE YEL/BLU WIRE YEL/GRY WIRE

ANTENNA LEAD BLK/BLU WIRE BRN WIRE FUSE 92 HOT AT ALL TIMES HOT IN START AND RUN FUSE PANEL (AT RIGHT FRONT FOOTWELL) FUSE NCA WIRE POWER ANTENNA RADIO RED/GRN WIRE RED/YEL WIRE RELAY & FUSE PANEL (AT RIGHT SIDE OF LUGGAGE COMPT) SOLID STATE WHT WIRE

2002-03 ALARM HORN ANTENNA BATTERY BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE DATA LINK CONNECTOR DRIVER'S SIDE DOOR LOCK SWITCH DRIVER'S SIDE LOCK CYLINDER LOCK SWITCH FUSE FUSE PANEL GRN WIRE GRN/BLU WIRE GRN/RED WIRE HOOD ALARM SWITCH (ON RIGHT REAR OF ENGINE COMPT) HOT AT ALL TIMES HOT IN RUN IGNITION SWITCH INSTRUMENT CLUSTER COMBINATION PROCESSOR INTERIOR LIGHTS SYSTEM, POWER WINDOWS SYSTEM KEY SWITCH MEMORY SYSTEMS NCA WIRE OFF POWER WINDOWS SYSTEM RADIO RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE RIGHT FOOTWELL E-BOX AUXILIARY FUSE, RELAY PANEL STARTER STARTING INTERLOCK RELAY SUPPLEMENTAL RESTRAINTS SYSTEM TELEPHONE/ TELEMATIC CONTROL MODULE TRUNK LID ALARM SWITCH (IN TRUNK LID LATCH) TRUNK LOCK ALARM/ CENTRAL LOCKING SWITCH (ON TRUNK LOCK CYLINDER HOUSING) TRUNK RELEASE SYSTEM VIO/BLU WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/YEL WIRE YEL WIRE YEL/VIO WIRE

AIR CONDITIONING SYSTEM BLK WIRE BLK/GRY WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BRAKE LIGHT SWITCH (ABOVE BRAKE PEDAL, ON BRACKET) BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DATA LINK CONNECTOR (RAPID DATA TRANSFER) FUSE FUSE PANEL (AT RIGHT FRONT OF FOOT- WELL) GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT IN START AND RUN INSTRUMENT CLUSTER SYSTEM MASS AIR FLOW SENSOR (INSIDE UPPER AIR CLEANER HOUSING) MOTRONIC ENGINE CONTROL MODULE (IN PLENUM CHAMBER E-BOX) NCA WIRE PLENUM CHAMBER E-BOX RELAY & FUSE PANEL (IN PLENUM CHAMBER E-BOX) RED WIRE RED/BLK WIRE RED/GRN WIRE RED/YEL WIRE SECONDARY AIR INJECTION PUMP MOTOR SECONDARY AIR INJECTION PUMP RELAY THROTTLE POSITION SENSOR (ON THROTTLE BODY) TRANSMISSION CONTROL MODULE (TCM) (IN PLENUM CHAMBER E-BOX) VIO WIRE VIO/GRY WIRE WHT WIRE WHT/BRN WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/VIO WIRE

BLK WIRE BLK/GRY WIRE BLK/RED WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/WHT WIRE BRN/YEL WIRE CAMSHAFT ADJUSTMENT VALVE 1 CAMSHAFT POSITION SENSOR (CMP) (ON REAR OF LEFT CYLINDER HEAD) CAMSHAFT POSITION SENSOR (CMP) 2 ENGINE COOLANT TEMPERATURE SENSOR (ON REAR OF RIGHT CYLINDER HEAD) GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/WHT WIRE GRY/YEL WIRE HEATED OXYGEN INTAKE MANIFOLD TUNING VALVE 2 LEAK DETECTION PUMP (LDP) LEFT ELECTRO- HYDRAULIC ENGINE SOLENOID VALVE NCA WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT ELECTRO- HYDRAULIC ENGINE SOLENOID VALVE SECONDARY AIR INJECTION SOLENOID VALVE VIO WIRE WHT WIRE WHT/YEL WIRE YEL WIRE YEL/GRN WIRE YEL/VIO WIRE YEL/WHT WIRE

BLK WIRE BLK/GRY WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/VIO WIRE CAMSHAFT ADJUSTMENT VALVE 2 CENTRAL ELECTRIC PANEL DTI FUEL GAUGE SENDER FUEL PUMP (IN RIGHT SIDE OF FUEL TANK, ACCESSIBLE FROM RIGHT FRONT OF TRUNK) FUEL PUMP RELAY FUSE FUSE PANEL (AT RIGHT FRONT OF FOOT- WELL) GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE GRY/YEL WIRE HARNESS) HOT AT ALL TIMES IGNITION COIL 1 IGNITION COIL 2 IGNITION COIL 3 IGNITION COIL 4 IGNITION COIL 5 IGNITION COIL 6 IGNITION COIL 7 IGNITION COIL 8 NCA WIRE PLENUM CHAMBER E-BOX RELAY & FUSE PANEL (IN PLENUM CHAMBER E-BOX) RED WIRE RED/BLK WIRE RED/WHT WIRE SPARK PLUG VIO WIRE WHT WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE YEL/VIO WIRE YEL/WHT WIRE

ANTI-LOCK BRAKES SYSTEM CRUISE CONTROL SYSTEM BLK WIRE BLK/GRN WIRE BLK/GRY 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 ENGINE SPEED SENSOR (ON LEFT FRONT OF TRANSMISSION) FUEL INJECTORS FUSE GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BRN WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES CENTRAL ELECTRIC PANEL INSTRUMENT CLUSTER INSTRUMENT CLUSTER COMBINATION PROCESSOR KNOCK SENSOR 1 (UNDER INTAKE MANIFOLD, BELOW RIGHT CYLINDER HEAD) KNOCK SENSOR 2 (ON LEFT SIDE OF ENG BLOCK) MOTRONIC ENGINE CONTROL MODULE (IN PLENUM CHAMBER E-BOX) NCA WIRE OIL LEVEL THERMAL SENSOR PLENUM CHAMBER E-BOX RELAY & FUSE PANEL (IN PLENUM CHAMBER E-BOX) RED WIRE RED/BLK WIRE RED/GRY WIRE RED/VIO WIRE SUPPLEMENTAL RESTRAINTS, ANTI-THEFT, DOOR LOCKS, EXTERIOR LIGHTS SYSTEM THROTTLE VALVE CONTROL MODULE VIO WIRE VIO/RED WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE YEL/VIO WIRE YEL/WHT WIRE