Designations on the diagrams of fuses, relays and wire colors (Skoda Yeti 5L)

Contents: The most important terminals ⬇ Colour coding of compact fuses ⬇ Designations of cross-section and…⬇ Color coding of maxi fuses ⬇ Location of relays and fuses ⬇

Note: Due to the variety of configuration options for the vehicles in question, only control system diagrams for the most common engines are provided below.

1. 1.2L petrol engine management system (CBZB), from 11.2010 — 377-382

2. Control system for 1.8 l petrol engines (CDAA and CDAB), since 05.2010 — 382-387

The most important terminals

Terminal 15 (Ignition Switch "ON" Position) Receives power through the ignition switch. The wires only supply power when the ignition is on and in most cases are green or green with a stripe of another color.

Terminal 30 ("+" battery) Power from the battery is supplied to this terminal; is in most cases red in color or red with a stripe of another color.

Terminal 31 ("-" battery) Leads to ground. Wires are usually black.

Terminal X is energized when the ignition key is turned from the "LOCK" position to the "OFF" position and is de-energized when the key is turned to the "START" position.

Colour coding of compact fuses

FOR	violet
5A	beige or light brown
7.5A	brown
10A	red
15A	blue
20A	yellow
25A	white or transparent
30A	green
35A	green-blue
40A	orange
50A	red

1. Location of fuse box mounting blocks 1. Fuse holder maxi A "SA" on the mounting block in the engine compartment (see illustration For); 2. Relay and fuse holder B "SB" in the mounting block in the engine compartment (see illustration 3b); 3. Fuse holder C "SC" behind the left end trim panel of the instrument panel (see illustration 4); 4. Thermal fuse in the relay holder under the "J519" block (see illustration 5a)

Designations of cross-section and colors of wire insulation

The wire designation on the diagrams consists of three parts and has the form 1.5 bl/gn.

The first part (1.5) means the cross-section of the wire (mm²); the second/third parts (bl/gn) mean the main color/color of the wire insulation stripe:

ws	white
sw	black
ro	red
br	brown
gn	green
bl	blue
gr	grey
li	violet
ge	yellow
or	orange
rs	pink

Color coding of maxi fuses

30A	orange
40A	green
50A	red
60A	yellow
70A	brown
80A	white
100A	blue
125A	pink
150A	grey
200A	violet

2. Location of relay mounting blocks 1. Relay and fuse holder B "SB" in the mounting block in the engine compartment (see illustration 3b); 2. Relay and thermal fuse holder under block "J519" (see illustration 5a); 3. Relay holder above block "J519" (see illustration 5b); 4. Relay holder under the mounting block in the engine compartment (see illustration 3c)

3a. Fuses maxi "SA" (terminal 30a) in holder A SA1. Generator fuse greater than 140A (150A) or generator fuse 140-180A (200A); SA2. Power steering control unit "J500" fuse, 80A; SA3. Fuse for radiator fan control unit "J293", 50A; SA4. Fuse for relay "J360" high heat output and additional electric heater "Z35", 80A; SA5. Fuse for power supply of consumers in the passenger compartment, 80A; SA6. Fuse for relay "J359" low heat output and additional electric heater "Z35", 40A; SA7. Not used

3b. Relay and fuse holder B "SB"

R1 — Main relay "J271" (on petrol models) or relay "J322" of the direct injection system (on diesel models)
R2 — Relay "J757" for power supply to consumers in the engine compartment, relay "J496" for additional coolant pump, or plug-in bridge "TV23"
SB1 - Not used
SB2 — Fuse of the control unit "J743" "Mechatronic" DSG, 30A, terminal 30A
SB3 — Fuse for the "J519" on-board power supply control unit, 5A, terminal 30A
SB4 — Fuse for ABS control unit "J104", 20A, terminal 30A
SB5 — Fuse for control unit "J743" "Mechatronic" DSG, 15A, terminal 30A
SB6 — Fuse for control unit "J285" in the instrument cluster and control unit "J527" of the steering column electronics, 5A, terminal 30A
SB7 — Fuse relay "J329" power supply terminal 15, 40A, terminal 30A
SB8 — Fuse for audio unit "R", audio preparation or unit "J503" control with display of audio/navigation system 15A, terminal 30A
SB9 — Fuse for the "J412" control unit for the mobile phone control electronics, 5A, terminal 30A
SB10 - Fuse for main relay "J271" and ECM (cBZB engines/other gasoline, - 10/5A, terminal 30A), or fuse relay "J322" direct injection and ECM diesel models (5A, terminal 30A)
SB11 — Fuse for additional heater control unit "J364" (up to 05.2010, 20A, terminal 30A) or fuse for additional heater control unit (since 05.2010, 30A)
SB12 — Fuse of the diagnostic interface unit "J533", 5A, terminal 30A
SB13 - ECM fuse "J623", 15A (for petrol models) or 30A (for diesel models) terminal 87a
SB14 - Ignition coil fuse (N70, N127, N₂91, N₂92) or ignition module "N152" of petrol models, or fuse for fuel pressure regulation valves "N276" and fuel metering valves "N290" (on diesel engines), 20A, terminal 87a
SB15 — Fuse for fuel pump relay "J17", pre-glow control unit "J179" and auxiliary fuel pump relay "J832" (on diesel models, 5A, terminal 87a), or lambda probe fuse "G39" and "G130" (on CBZB engines, 10A, terminal 87a)
SB16 — Fuse for the "J519" on-board power supply control unit (right headlight, right rear combination light), 30A, terminal 30A
SB17 — Fuse for relay "J4" 2-tone horn, 15A, terminal 30A
SB18 — Fuse for the J525 digital audio control unit, 30A, terminal 30A
SB19 — Fuse for block "J400" of windshield wiper electric motor control, 30A, terminal 30A
Fuel pressure regulation valve "N276" fuse (petrol engines, except CBZB, 20A, terminal 87a), or the coolant circulation pump fuse "V50" (10A, terminal 87a)
SB21 — Lambda probe fuse "G39" and "G130" (petrol engines, except CBZB, 15A, terminal 87a), or vacuum pump fuse "V192" (cBZB engine with DSG, 20A, terminal 87a), or lambda probe fuse "G39" diesel models (10A, terminal 87a)
SB22 — Fuse for clutch position sensor "G476", 5A, terminal 87a
SB23 — Circulation pump fuse "1/5/" (petrol models, except CBZB, 5A, terminal 87a), or fuse of valve "N276" of fuel pressure regulation (cBZB motor, 15A, terminal 87A), or fuse: solenoid valve "N75" of the boost pressure regulation, switching valve "N345" of the EGR radiator and air flow sensor "G70" (diesel models, 10A, terminal 87a)
SB24 — Fuse for radiator fan control unit "J293" (petrol and diesel models), solenoid valve #1 EVAP "N80", Solenoid valve #1 "N205" for adjusting the timing phases, Valve "N316" of the intake manifold flap, Solenoid valve "N75" for adjusting the boost pressure, Valve "N249" of the turbocharger bypass, Valve "N428" for adjusting the oil pressure, Solenoid valve "N492" of the coolant circuit, Relay "J757" for supplying voltage to components in the engine compartment (petrol engines except CBZB), relay "J496" additional water pump (cBZB engine) and circulation pump No. 2 "V178" (diesel engines), 10A, terminal 87a
SB25 — Fuse for ABS control unit "J104", 40A, terminal 30A
SB26 — Fuse for the "J519" on-board power supply control unit (left headlight, left rear combination light), 30A, terminal 30a
SB27 — Fuse for block "J179" of preheating control of diesel models, 50A, terminal 30A
SB28 - Not used
SB29 — Fuse for supplying voltage to components in the passenger compartment, 50A, terminal 30A
SB30 — Fuse relay "J59" terminal X unloader, 50A, terminal 30A

3c. Relay under the mounting block in the engine compartment1. Not used; 2. Block "J179" control preheating diesel models

4. Fuse holder C "SC"

SC1 Fuse for heating resistor PCV "N79" or Mechatronic unit "J743" DSG (10A, terminal 15A);
SC2 Fuse for trailer connection recognition unit "J345", 20A, terminal 30A;
SC3 Fuse for trailer connection recognition unit "J345", 15A, terminal 30A;
SC4 Not used, or instrument cluster and steering column switch fuse, 5A;
SC5 Fuse for the "L26" fresh air supply fan control unit (terminal 30a) and switch "E9" of the fresh air supply fan (terminal 75a), 40A;
SC6 Fuse for electric motor "V12" of rear window wiper, 15A, terminal 75A;
SC7 Not used, or phone fuse, 5A;
SC8 Fuse for trailer connection recognition unit "J345", 15A, terminal 30A;
SC9 Fuse for the "J519" control unit for on-board power supply, 10A, terminal 30A;
SC10 Fuse DLC "T16b", light switch "E1" and light/rain sensor "G397", 10A, terminal 30A;
SC11 Fuse for ignition unit "J667" left headlight, 10A, terminal 15A;
SC12 Fuse for ignition unit "J668" right headlight, 10A, terminal 15A;
SC13 Fuse for audio unit, portable navigation converter, or audio preparation, 15A, terminal 15A;
SC14 Fuse for trailer connection recognition unit "J345", 5A, terminal 15A;
SC15 Light switch fuse "E1", 5A, terminal 75A;
SC16 Fuse for heating elements "Z20" and "Z21" of windshield washer fluid supply nozzles, 5A, terminal 75A;
SC17 Fuse for electric motors "V48" and "V49" for headlight range adjustment and regulator "E102" for headlight range adjustment, 5A, terminal 15A;
SC18 Fuse DLC "T16b", ECM "J623" and D/W "F" brake lights, 10A, terminal 15a;
SC19 Fuse for ABS control unit "J104", ESP switch "E132", tire inflation pressure monitoring switch "E226", hill descent control system switch "E618", system switch "Start-stop", parking assistance control unit "J446" and parking autopilot control unit "J791", 5A, terminal 15A;
SC20 Fuse for SRS control unit "J234" and K/L "K145" for disabling front passenger airbag, 5A, terminal 15A;
SC21 Fuse D/W "F4" for reversing lights, air flow sensor "G70", engine oil level and temperature sensor "G266", high pressure sensor "G65", air quality sensor "G238", fresh air blower relay "J13", climate control unit "J162", interior mirror "Y7" with automatic dimming, voltage converter "A25" and mobile phone preparation, 5A, terminal 15A;
SC22 Fuse for power steering control unit "J500", data bus diagnostic interface "J533", instrument cluster control unit "J285" and all-wheel drive control unit "J492", 5A, terminal 15A;
SC23 Fuse for the "J519" on-board power supply control unit (single lock) and control units in the doors (J386-J389, lock control), 15A, terminal 30A;
SC24 Rear door control unit fuse (J388 and J389, window lift control), 30A, terminal 30A;
SC25 Fuse for relay "J9" for heated rear window (25A, terminal 30A), or fuse for auxiliary heater relay "J485" and relay "J9" (30A, terminal 30A);
SC26 Fuse for socket "U5" 12 Volt in luggage compartment, 20A, terminal 30A;
SC27 Fuse for sunroof drive control unit "J386" and sunroof sunblind drive control unit "J394", 30A, terminal 30A;
SC28 Fuse for relay "J17" of fuel pump, unit "J538" of fuel pump control and relay "J832" of additional fuel pump, 15A, terminal 30A;
SC29 Front door control unit fuse (J386 and J387, window lift control), 30A, terminal 30A;
SC30 Front and rear cigarette lighter fuse "U1", 20A, terminal 30A;
SC31 Fuse for relay "J39" headlight washer, 20A, terminal 30A;
SC32 Fuse for front seat heating control unit "J774", 20A, terminal 30A;
SC33 Climate control unit fuse (J162, J301 or J255), 7.5A, terminal 30A;
SC34 Siren fuse "H12" and tilt sensor "G384" for anti-theft alarm, 5A, terminal 30A;
SC35 Fuse for selector lever sensor control unit "J587", 10A, terminal 30A;
SC36 Not used or DVD fuse (5A)

5a. Thermal fuse (A) and relay under block "J519" A. Thermal fuse No. 1 "S44" of the driver's seat adjustment drive, 30A; 1. Relay "J329" power supply terminal 15; 2. Relay "J9" rear window heating; 3. Relay "J682" supplying power to terminal 50; 4. Relay "J17" of the fuel pump; 5. Relay "J59" terminal X unloading

5b. Relay above block "J519" 1. Not used; 2. Relay "J4" 2-tone horn; 3. Relay "J13" of the fresh air supply fan or relay "J359" of low heat output; 4a. Relay "J151" of the coolant circulation pump or relay "J749" of the additional heater fuel pump; 4b. Relay "J832" additional fuel pump; 5. Relay "J485" additional heater; 6. Relay "J360" high heat output; 7, 8. Not used; 9. Relay "J39" headlight washers