Peugeot 406 – from DAM 8421 – fuse box diagram
Fuse box in passenger compartment (BH28)
| Fuse | Ampere rating [A] | Supply | Circuit protected |
| F1 | Shunt | Ignition + ve | Airbags and seat-belts pre-tensioning ECU, BSI |
| F2 | 5 | Air temperature sensor for passenger compartment, heater panel | |
| F3 | 10 | Instrument panel, brake lights switch, stop lamps, cruise controlsafety switch (brakes), cruise control override switch (clutch), cruise control switch | |
| F4 | 5 | BSI | |
| F5 | — | — | |
| F6 | 10 |
+battery ignition + ve |
Engine management control unit |
| F7 | 15 | Radio amplifier JBL, alarm siren | |
| F8 | 10 | Interior lights, boot light, multifunction display, navigation ECU, control unit for memorising seat and mirror positions, alarm LED | |
| F9 | 5 | BSI | |
| F10 | 15 | Radio | |
| F11 | 10 | Separate fuse | Left brake light, third brake light |
| F12 | 10 | Right brake light | |
| F13 | 20 | + battery | One touch window ECU (driver) |
| F14 | 30 | Rear window lift relay, one touch electric window control unit (front, passenger, coupe) | |
| F15 | 20 | Pre wired supply to towbar | |
| F16 | 20 | Control unit for memorising seat and mirror positions, electric driver’s seat | |
| F17 | 20 | Electric passenger’s seat | |
| F18 | 10 | Separate fuse | BSI. Illumination: switches, heater panel, display unit, automatic transmission selector |
| F19 | 10 | Rear fog lights and warning lights | |
| F20 | — | — | |
| F21 | — | — | |
| F22 | 10 | Acc + ve | Rain sensor, map reading lamp, courtesy lights, window switches (coupe), glove box light, vanity mirror, mirrors control board, electrocrome interior mirror, control unit for memorising seat and mirror positions |
| F23A | 20 | Acc + ve | Cigar lighter |
| F23B | 20 | + battery | Cigar lighter |
| F24A | — | Acc + ve | — |
| F24B | — | + battery | — |
| F25 | 20 | Acc + ve | Wiper stalk, headlamp wash relay, radio |
| F26 | — | — | |
| F27 | 5 | Built-in system interface (BSI), rear window lift relay, key lock (automatic gearbox) | |
| F28 | — | — |
Fuse box in BSI1 (Built-in-system)
| Fuse | Ampere rating [A] | Supply | Circuit protected |
| A | 20 | Battery + ve | Central locking, dead locking |
| B | 20 | Windscreen wiper | |
| C | 40 | Heated rear screen, heated mirrors | |
| D | 15 | Rear wiper | |
| E | 30 | Electric front windows, sun roof | |
| F | 15 | Supply to the multiplexed VAN network |
Fuse box in engine bay (BM 34)
| Fuse | Ampere rating [A] | Supply | Application |
| MF1 | 60 | + Battery | BSI |
| MF2 | 20/40/60 | Engine cooling system | |
| MF3 | 40/60 | Engine cooling system | |
| MF4 | 30 | Engine running relay, heated seats | |
| MF8 | 50 | Fuse box BH28 | |
| MF9 | 60 | BSI | |
| MF10 | 30 | Light switch supply, signaling | |
| MF11 | 50 | ABS control unit | |
| MF12 | 50 | Anty theft contact power supply | |
| MF13 | 50 | Anty theft contact power supply | |
| MF15 | ABS control unit | ||
| MF16 | — | — | |
| MF17 | — | — | |
| F5 | 15 | Horn | |
| F6 | 15 | BSI | |
| F7 | 10 | Termostats, fan relay | |
| F14 | 10 | Headlight wash timer, diagnostic socket | |
| F18 | — | Separate fuse | — |
| F19 | — | — | |
| F20 | 15 | Ignition + ve | Variable power steering ECU, variable suspension ECU |
| F21 | 10 | + battery | — |
| F22 | — | — | |
| F23 | 10 | Ignition +ve | ABS control unit |
| F24 | 10 | Vehicle speed sensor, engine injection double relay, injection ECU, water in diesel sensor | |
| F25 | 10 | +ve after double relay | Inertia switch, fuel pump (except ESJ94 engine) |
| 15 | Fuel pump (ES9J4 engine) | ||
| F26 | 30 | Battery + | Engine injection double relay, engine fuel system, fuses 25 – 28 – 34 (BM34) |
| F27 | 30 | Engine injection double relay, engine fuel system, fuses 25 – 28 – 34 (BM34) | |
| F28 | 10 | +ve after double relay | — |
| F29 | 30 | + battery | Pulsair relay |
| F30 | 10 | Front left fog lamp and warnign light on instrument panel | |
| F31 | 10 | Front right fog lamp | |
| F32 | 10 | Ignition + ve | Pressostat, coolant thermostat, eigine coolant level sensor, diagnostic socket, reversing lamps, fan relay, relay protection switch unit BCP3 (DW10 engine) |
| F33 | 10 | Automatic transmission ECU, selector lever position switch, shift-lock relay | |
| F34 | 10 | +ve after double relay | Oxygen sensor heating resistor, cruise control switch (XU engine) |
| 15 | Engine fuel system, cruise control switch (DW engine) |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.