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Volkswagen Beetle A4 (1997-2005) nca Wiring diagrams

This page contains all the electrical diagrams for the component. nca, in which he is found in the car Volkswagen Beetle A4 (1997-2005). You can view various wiring diagrams where this component is used, as well as go to more detailed diagrams to see the complete connection and interaction in the system. All diagrams have links to quickly jump to the corresponding section with the component for easy viewing..

nca wiring diagram (1 of 43)

Volkswagen Beetle A4 (1997-2005) nca wiring diagram (1 of 43)

A/C CLUTCH A/C CUT-OUT THERMAL SWITCH (IN COOLANT FLANGE, REAR OF CYLINDER HEAD) AFTER-RUN COOLANT PUMP BLK WIRE BLK/BLU WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/WHT WIRE COOLANT FAN COOLANT FAN CONTROL (FC) THERMAL SWITCH (ON BOTTOM LEFT SIDE OF RADIATOR) FUSE 16 FUSE 164 FUSE 180 FUSE 5 FUSE BRACKET (ON BATTERY COVER) FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/BLK WIRE GRN/WHT WIRE HEATER-A/C CONTROL PANEL HIGH PRESSURE SENSOR HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT CLUSTER MOTRONIC ENGINE CONTROL MODULE (ECM) (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE RED WIRE RED/BLK WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RIGHT COOLANT FAN THIRD SPEED COOLANT FAN CONTROL RELAY (ON THIRTEEN POSITION AUX RELAY PANEL) VIO/YEL WIRE WHT (OR BLK) WIRE WHT WIRE WHT/BLK WIRE

Go to component -> 1.8l turbo, cooling fan circuit -> NCA WIRE

nca wiring diagram (2 of 43)

Volkswagen Beetle A4 (1997-2005) nca wiring diagram (2 of 43)

A/C CLUTCH A/C CUT-OUT THERMAL SWITCH (FRONT OF ENGINE COMPARTMENT) A/C SWITCH AFTER- BLK WIRE BLK/BLU WIRE BLU WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/WHT WIRE COOLANT FAN COOLANT FAN CONTROL (FC) THERMAL SWITCH (ON BOTTOM LEFT SIDE OF RADIATOR) COOLANT PUMP FRESH AIR BLOWER (BEHIND RIGHT SIDE OF DASH, FORWARD OF GLOVE BOX) FRESH AIR BLOWER SWITCH FRESH/ RECIRC SWITCH FUSE 16 FUSE 164 FUSE 180 FUSE 25 FUSE 5 FUSE BRACKET (ON BATTERY COVER) FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY/BLU WIRE HEATER-A/C CONTROL PANEL HIGH PRESSURE SENSOR HOT AT ALL TIMES HOT IN ON HOT IN ON OR START INSTRUMENT CLUSTER MOTRONIC ENGINE CONTROL MODULE (ECM) (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE RED WIRE RED/BLK WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RIGHT COOLANT FAN RUN WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE

Go to component -> 1.8l turbo, manual a/c circuit -> NCA WIRE

nca wiring diagram (3 of 43)

Volkswagen Beetle A4 (1997-2005) nca wiring diagram (3 of 43)

2.0L A/C CLUTCH BLK WIRE BLK/BLU WIRE BLU WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE COOLANT FAN COOLANT FAN CONTROL (FC) THERMAL SWITCH (ON BOTTOM LEFT SIDE OF RADIATOR) FUSE 16 FUSE 164 FUSE 180 FUSE 5 FUSE BRACKET (ON BATTERY COVER) FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/BLK WIRE HEATER-A/C CONTROL PANEL HIGH PRESSURE SENSOR HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT CLUSTER MOTRONIC ENGINE CONTROL MODULE (ECM) (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE RED WIRE RED/BLK WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RIGHT COOLANT FAN TRANSMISSION CONTROL MODULE (TCM) (BELOW RIGHT SIDE OF DASH) VIO/YEL WIRE WHT WIRE

Go to component -> 1.9l turbo diesel, cooling fan circuit -> NCA WIRE

nca wiring diagram (4 of 43)

Volkswagen Beetle A4 (1997-2005) nca wiring diagram (4 of 43)

A/C CLUTCH A/C SWITCH BLK WIRE BLK/BLU WIRE BLU WIRE BLU/GRN WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE COOLANT FAN COOLANT FAN CONTROL (FC) THERMAL SWITCH (ON BOTTOM LEFT SIDE OF RADIATOR) DIESEL FRESH AIR BLOWER (BEHIND RIGHT SIDE OF DASH, FORWARD OF GLOVE BOX) FRESH AIR BLOWER SWITCH FRESH/ RECIRC SWITCH FUSE 16 FUSE 164 FUSE 180 FUSE 25 FUSE 5 FUSE BRACKET (ON BATTERY COVER) FUSE PANEL (BEHIND LEFT SIDE OF DASH) GASOLINE GRN WIRE GRN/BLK WIRE GRY/BLU WIRE HEATER-A/C CONTROL PANEL HIGH PRESSURE SENSOR HOT AT ALL TIMES HOT IN ON HOT IN ON OR START INSTRUMENT CLUSTER MOTRONIC ENGINE CONTROL MODULE (ECM) (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE RED WIRE RED/BLK WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RIGHT COOLANT FAN TRANSMISSION CONTROL MODULE (TCM) (BELOW RIGHT SIDE OF DASH) VIO/YEL WIRE W/A/T ONLY WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE

Go to component -> 1.9l turbo diesel, manual a/c circuit -> NCA WIRE

nca wiring diagram (5 of 43)

Volkswagen Beetle A4 (1997-2005) nca wiring diagram (5 of 43)

A/C CLUTCH BLK WIRE BLK/BLU WIRE BLU WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE COOLANT FAN COOLANT FAN CONTROL (FC) THERMAL SWITCH (ON BOTTOM LEFT SIDE OF RADIATOR) FUSE 16 FUSE 164 FUSE 180 FUSE 5 FUSE BRACKET (ON BATTERY COVER) FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE HEATER-A/C CONTROL PANEL HIGH PRESSURE SENSOR HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT CLUSTER MOTRONIC ENGINE CONTROL MODULE (ECM) (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE RED WIRE RED/BLK WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RIGHT COOLANT FAN VIO/YEL WIRE WHT WIRE

Go to component -> 2.0l, cooling fan circuit, convertible -> NCA WIRE

nca wiring diagram (6 of 43)

Volkswagen Beetle A4 (1997-2005) nca wiring diagram (6 of 43)

2.0L A/C CLUTCH BLK WIRE BLK/BLU WIRE BLU WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE COOLANT FAN COOLANT FAN CONTROL (FC) THERMAL SWITCH (ON BOTTOM LEFT SIDE OF RADIATOR) FUSE 16 FUSE 164 FUSE 180 FUSE 5 FUSE BRACKET (ON BATTERY COVER) FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/BLK WIRE HEATER-A/C CONTROL PANEL HIGH PRESSURE SENSOR HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT CLUSTER MOTRONIC ENGINE CONTROL MODULE (ECM) (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE RED WIRE RED/BLK WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RIGHT COOLANT FAN TRANSMISSION CONTROL MODULE (TCM) (BELOW RIGHT SIDE OF DASH) VIO/YEL WIRE WHT WIRE

Go to component -> 2.0l, cooling fan circuit, except convertible -> NCA WIRE

nca wiring diagram (7 of 43)

Volkswagen Beetle A4 (1997-2005) nca wiring diagram (7 of 43)

A/C CLUTCH A/C SWITCH BLK/BLU WIRE BLU WIRE BLU/GRN WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE COOLANT FAN COOLANT FAN CONTROL (FC) THERMAL SWITCH (ON BOTTOM LEFT SIDE OF RADIATOR) FRESH AIR BLOWER (BEHIND RIGHT SIDE OF DASH, FORWARD OF GLOVE BOX) FRESH AIR BLOWER SWITCH FRESH/ RECIRC SWITCH FUSE 16 FUSE 164 FUSE 180 FUSE 25 FUSE 5 FUSE BRACKET (ON BATTERY COVER) FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRY/BLU WIRE HEATER-A/C CONTROL PANEL HIGH PRESSURE SENSOR HOT AT ALL TIMES HOT IN ON HOT IN ON OR START INSTRUMENT CLUSTER MOTRONIC ENGINE CONTROL MODULE (ECM) (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE RED WIRE RED/BLK WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RIGHT COOLANT FAN VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE

Go to component -> 2.0l, manual a/c circuit, convertible -> NCA WIRE

nca wiring diagram (8 of 43)

Volkswagen Beetle A4 (1997-2005) nca wiring diagram (8 of 43)

A/C CLUTCH A/C SWITCH BLK WIRE BLK/BLU WIRE BLU WIRE BLU/GRN WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE COOLANT FAN COOLANT FAN CONTROL (FC) THERMAL SWITCH (ON BOTTOM LEFT SIDE OF RADIATOR) DIESEL FRESH AIR BLOWER (BEHIND RIGHT SIDE OF DASH, FORWARD OF GLOVE BOX) FRESH AIR BLOWER SWITCH FRESH/ RECIRC SWITCH FUSE 16 FUSE 164 FUSE 180 FUSE 25 FUSE 5 FUSE BRACKET (ON BATTERY COVER) FUSE PANEL (BEHIND LEFT SIDE OF DASH) GASOLINE GRN WIRE GRN/BLK WIRE GRY/BLU WIRE HEATER-A/C CONTROL PANEL HIGH PRESSURE SENSOR HOT AT ALL TIMES HOT IN ON HOT IN ON OR START INSTRUMENT CLUSTER MOTRONIC ENGINE CONTROL MODULE (ECM) (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE RED WIRE RED/BLK WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RIGHT COOLANT FAN TRANSMISSION CONTROL MODULE (TCM) (BELOW RIGHT SIDE OF DASH) VIO/YEL WIRE W/A/T ONLY WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE

Go to component -> 2.0l, manual a/c circuit, except convertible -> NCA WIRE

nca wiring diagram (9 of 43)

Volkswagen Beetle A4 (1997-2005) nca wiring diagram (9 of 43)

ALARM SYSTEM ANTI- THEFT ENGINE DISABLE FUSE BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CENTRAL LOCKING WARNING LIGHT (SAFE) CENTRAL LOCKING, ANTI-THEFT WARNING SYSTEM ANTENNA CENTRAL LOCKING/ ANTI- THEFT WARNING SYSTEM FUSE CIRCUIT BREAKER COMPUTER DATA LINES SYSTEM CONTROL MODULE DEFOGGERS SYSTEM DRIVER'S SIDE CENTRAL LOCKING UNIT DRIVER'S SIDE DOOR CONTROL MODULE (IN DRIVER'S DOOR, INTEGRAL WITH WINDOW MOTOR) DRIVER'S SIDE INTERIOR LOCK SWITCH FUSE FUSE FUSE FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE GRN WIRE GRN/BRN WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START IGNITION SWITCH KEY IN IGNITION INSTRUMENT CLUSTER NCA WIRE ORG/ WIRE ORG/BRN WIRE ORG/GRN WIRE POWER TOPS SYSTEM POWER WINDOW CIRCUIT BREAKER (IN RELAY PANEL) REAR LID UNLOCKED WARNING LIGHT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/WHT WIRE RED/YEL WIRE SUPPLEMENTAL RESTRAINTS SYSTEM TRUNK LOCK ALARM/ CENTRAL LOCKING SWITCH VIO WIRE VIO/BLU WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE

Go to component -> Anti-theft circuit, convertible (1 of 2) -> NCA WIRE

nca wiring diagram (10 of 43)

Volkswagen Beetle A4 (1997-2005) nca wiring diagram (10 of 43)

ALARM SYSTEM ANTI- THEFT ENGINE DISABLE FUSE BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CENTRAL LOCKING WARNING LIGHT (SAFE) CENTRAL LOCKING, ANTI-THEFT WARNING SYSTEM ANTENNA CENTRAL LOCKING/ ANTI- THEFT WARNING SYSTEM FUSE CIRCUIT BREAKER COMPUTER DATA LINES SYSTEM CONTROL MODULE DEFOGGERS SYSTEM DRIVER'S SIDE CENTRAL LOCKING UNIT DRIVER'S SIDE DOOR CONTROL MODULE (IN DRIVER'S DOOR, INTEGRAL WITH WINDOW MOTOR) DRIVER'S SIDE INTERIOR LOCK SWITCH FUSE FUSE FUSE FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE GRN WIRE GRN/BRN WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START IGNITION SWITCH KEY IN IGNITION INSTRUMENT CLUSTER NCA WIRE ORG/ WIRE ORG/BRN WIRE ORG/GRN WIRE POWER TOPS SYSTEM POWER WINDOW CIRCUIT BREAKER (IN RELAY PANEL) REAR LID UNLOCKED WARNING LIGHT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/WHT WIRE RED/YEL WIRE SUPPLEMENTAL RESTRAINTS SYSTEM VIO WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE

Go to component -> Anti-theft circuit, except convertible (1 of 2) -> NCA WIRE

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