Table of Contents
The Volkswagen Caddy is a light commercial vehicle produced in two body styles: panel van and passenger MPV (minivan). It has been manufactured across four generations since 1980. This reference manual provides fuse and relay box diagrams and descriptions for the third-generation Caddy (chassis code 2K, 2C; A5 (PQ35) platform), produced from 2003 through 2015. It includes location guides, photos, and component layouts, with specific identification of the cigarette lighter fuse.
Because the Volkswagen Caddy was manufactured with various body styles, trim levels, and electrical configurations—and underwent a major facelift in 2010—there is no single universal wiring diagram for all models. The most common configuration layouts are detailed below for reference.
General Layout of Fuse and Relay Blocks
- Fusible links in main fuse holder (A -SA-), auxiliary relay carrier under E-box
- Fuses and relays in electronics box/switching unit (B -SB-)
- Fuse and relay panel under instrument panel, driver side (C -SC-)
- Driver footwell relay carrier
Engine Compartment
Main Engine Compartment Fuse and Relay Box
Located adjacent to the battery. Contains high-amp fusible links directly connected to the battery, along with a secondary compartment housing standard fuses and relays.
Type 1 Configuration
General view.
| Diagram | |
|---|---|
|
|
| No. | Rating / Circuit Assignment |
| SB1 | - |
| SB2 | 30 A DSG direct-shift gearbox mechatronic unit |
| SB3 | 5 A Battery monitoring control unit Onboard supply control unit |
| SB4 | 20 A ABS control unit ABS hydraulic pump unit |
| SB5 | 15 A DSG direct-shift gearbox mechatronic unit |
| SB6 | 5 A Instrument cluster control unit Steering column electronics control unit |
| SB7 | 40 A Terminal 15 power supply relay Fuse panel C -SC- |
| SB8 | 15 A Radio/Navigation display control unit Head unit Voltage regulator Radio/Navigation display unit Fuses 57, 58 on fuse panel C -SC- |
| SB9 | 5 A Mobile phone operating electronics control unit |
| SB10 | 5 A Main power supply relay Engine Control Module (ECM) Engine electronics power supply relay |
| SB11 | 30 A Auxiliary heater control unit |
| SB12 | 5 A Data bus diagnostic interface (Gateway) |
| SB13 | 15 A Engine Control Module (ECM) (Petrol) 30 A Engine Control Module (ECM) (Diesel) |
| SB14 | 15 A Fuel pressure regulator valve (Diesel) 20 A Ignition coils |
| SB15 | 5 A Fuel heating relay Fuel pump relay Electric fuel pump relay 2 Glow plug control module 10 A Lambda sensor heater, CNG supply valve 15 A High-pressure valve, CNG supply valve |
| SB16 | 30 A Onboard supply control unit (Battery, ABS, headlights, turn signals) |
| SB17 | 15 A Horn relay |
| SB18 | 30 A Special vehicle control unit |
| SB19 | 30 A Windscreen wiper motor control unit |
| SB20 | 10 A Fuel tank shut-off valve Coolant recirculation pump |
| SB21 | 10 A Oxygen (Lambda) sensor heater (Diesel) 15 A Fuel pump control module, Oxygen sensor heater |
| SB22 | 5 A Clutch pedal position sensor Brake light switch |
| SB23 | 5 A Auxiliary coolant pump relay 10 A Mass Air Flow (MAF) sensor (Diesel) Boost pressure control solenoid valve (Diesel) EGR cooler bypass valve (Diesel) CNG control unit Shut-off valve relay CNG high-pressure shut-off valve 15 A Fuel pressure regulator valve |
| SB24 | 10 A Radiator fan control unit Secondary air injection (SAI) pump relay Auxiliary cooling system pump relay EVAP canister solenoid valve 1 Coolant control valve, Intake manifold flap changeover valve Coolant recirculation pump 2 Fuel injectors |
| SB25 | 40 A ABS hydraulic unit ABS pump Control unit |
| SB26 | 30 A Onboard supply control unit, headlights, turn signals |
| SB27 | 40 A Secondary air injection (SAI) pump motor 50 A Glow plug control module |
| SB28 | - |
| SB29 | 30 A / 50 A Supply to fuse panel C -SC- |
| SB30 | 50 A Supply to fuse panel C -SC- |
| A1 | Main power supply relay, Engine component power supply relay |
| A2 | Secondary Air Injection (SAI) pump relay, Auxiliary coolant pump relay, CNG shut-off valve relay, Jumper link |
Type 2 Configuration
General view.
| Diagram | |
|---|---|
|
|
| No. | Rating / Description |
| SB1 | 30 A ABS control unit |
| SB2 | |
| SB3 | Unassigned |
| SB4 | 5 A Onboard supply control unit |
| SB5 | 20 A Horn relay, dual-tone horn |
| SB6 | 20 A Ignition coils |
| SB7 | 5 A Brake pedal switch, Engine Control Module (ECM), clutch pedal position sensor |
| SB8 | 10 A Exhaust Gas Recirculation (EGR) valve, EVAP canister purge valve 1, radiator fan control unit, intake manifold flap motor |
| SB9 | 10 A Fuel pump relay (BDJ, BJB engine codes) |
| SB10 | 10 A Exhaust Gas Recirculation (EGR) valve, boost pressure control solenoid valve, EGR cooler changeover valve |
| SB11 | 25 A / 30 A Motronic control module (BCA, 8GU), direct diesel injection control module (BDJ, BJB) |
| SB12 | 10 A Oxygen (Lambda) sensor (BCA), downstream oxygen sensor (BCA) |
| SB13 | Unassigned |
| SB14 | Unassigned |
| SB15 | 40 A Starter motor (Terminal 50 circuit) |
| SB16 | 15 A Steering column electronics control unit |
| SB17 | 10 A Instrument cluster control unit |
| SB18 | Unassigned |
| SB19 | 15 A Radio, display unit, radio-navigation system |
| SB20 | 10 A Mobile phone operating electronics control unit |
| SB21 | Unassigned |
| SB22 | Unassigned |
| SB23 | Unassigned |
| SB24 | 10 A Data bus diagnostic interface (Gateway) |
| SB25 | 25 A Spare / 10 A Motronic control unit |
| SB26 | 5 A Terminal 30 power supply relay |
| SB27 | 10 A Crankcase ventilation heating element |
| SB32 | 40 A Glow plugs 1, 2, 3 |
| SB33 | 15 A Glow plug 4, fuel pump |
| SB34 | Unassigned |
| SB35 | Unassigned |
| SB35 | Unassigned |
| SB37 | Unassigned |
| SB38 | 10 A Headlight range control actuators |
| SB39 | 5 A Oil level and temperature sensor, instrument cluster control unit |
| SB40 | 20 A Passenger compartment fuse panel power supply |
| SB41 | 5 A Fuel pump relay |
| SB42 | 10 A Glow plug relay, Mass Air Flow (MAF) meter |
| SB43 | Unassigned |
| SB44 | Unassigned |
| SB45 | 15 A Oxygen (Lambda) sensor |
| SB46 | Unassigned |
| SB47 | 40 A Onboard supply control unit, left headlight (models with central locking) |
| SB48 | 40 A Onboard supply control unit, right headlight (models with central locking) |
| SB49 | Unassigned |
| SB50 | 50 A Glow plug system |
| SB51 | 40 A Glow plugs, Secondary Air Injection (SAI) pump relay, SAI pump motor |
| SB52 | Unassigned |
| SB53 | 25 A Driver door control unit, front passenger door control unit |
| SB54 | 50 A Radiator fan control unit |
| Note: The glow plug control module is located directly underneath the box assembly. | |
High-Current Fusible Links
General view.
| Diagram | |
|---|---|
|
|
| No. | Rating / Circuit Assignment |
| SA1 | 150 A / 200 A - Alternator |
| SA2 | 50 A / 80 A - Power steering control unit |
| SA3 | 50 A - Radiator fan control unit |
| SA4 | 80 A - Load reduction relay (X-contact) or Fuse panel C -SC- |
| SA5 | 80 A - Unassigned or Fuse panel C -SC- |
| SA6 | 100 A - Fuse panel C -SC- or 40 A - Low-heat output relay |
| SA7 | 80 A - High-heat output relay or Fuse panel C -SC- |
Passenger Compartment
The main interior fuse panel and relay carrier are located underneath the dashboard on the driver's side.
General block layout.
Photo example.
Fuse Box
Accessing the panel.
| Diagram | |
|---|---|
|
|
| No. | Rating / Description |
| 1 | 15 A Ignition starter switch |
| 2 | 5 A Trailer detection control unit |
| 3 | 5 A Heater and AC control module, high-pressure sensor |
| 4 | 5 A Mobile phone operating electronics control unit |
| 5 | 15 A Mass Air Flow (MAF) sensor |
| 6 | 5 A Airbag control unit |
| 7 | 5 A Driver and front passenger seat heating switches, Air Conditioning (A/C) control unit |
| 8 | 5 A Heated windscreen washer nozzles (left and right) |
| 9 | 5 A Airbag control unit, power steering control unit |
| 10 | 5 A Mobile phone operating electronics control unit, 10 A Reversing light switch |
| 11 | 10 A Power steering control unit |
| 12 | Unassigned |
| 13 | Unassigned |
| 14 | 5 A ASR switch, ASR/ESP OFF button, ABS control unit with EDL |
| 15 | 10 A Reversing light switch, auxiliary heater relay (from May 2004) |
| 16 | 5 A Data bus diagnostic interface (Gateway) |
| 17 | 7.5 A Left sidelight and rear fog light bulb (models without central locking) |
| 18 | Unassigned |
| 19 | Unassigned |
| 20 | Unassigned |
| 21 | 5 A Automatic transmission selector lever switch |
| 22 | 5 A Auxiliary coolant heater remote control receiver |
| 23 | 10 A Brake light switch, left/right brake lights, high-level brake light, ABS control unit |
| 24 | 10 A Light switch, A/C control unit, Data Link Connector (OBD-II port T16/16) |
| 25 | 30 A Heated driver and front passenger seat control unit |
| 26 | 10 A Engine Control Module (ECM), fuel injectors |
| 27 | 15 A Rear window wiper motor (from May 2004) |
| 28 | 5 A Light switch (models with central locking) |
| 30 | 20 A Front fog light switch, light switch |
| 31 | 25 A Auxiliary heater operational relay (up to April 2004); Onboard supply control unit (from May 2004) |
| 32 | 15 A Windscreen/rear window washer pump |
| 33 | 40 A Heater fan switch, A/C control unit |
| 34 | Unassigned |
| 35 | 40 A Fresh air blower, auxiliary heater operation relay |
| 36 | Unassigned |
| 37 | 15 A Right dipped-beam headlight bulb (models without central locking only) |
| 38 | 15 A Left dipped-beam headlight bulb (models without central locking only) |
| 39 | Unassigned |
| 40 | 20 A Trailer detection control unit |
| 41 | 20 A Trailer socket |
| 42 | 15 A / 30 A 12 V power socket (center console near handbrake), 12 V power socket (left rear luggage compartment) |
| 43 | 15 A Electric fuel pump relay 2 (BCA, BGU engines), fuel pump |
| 44 | 5 A Interior monitoring sensor, vehicle inclination sensor |
| 45 | 5 A Antenna selection control unit |
| 46 | 7.5 A Onboard supply control unit |
| 47 | 25 A Cigarette lighter |
| 48 | 20 A Headlight washer system relay, headlight washer pump |
| 49 | 10 A Driver door control unit, front passenger door control unit |
| 50 | 25 A Central convenience control module |
| 51 | 30 A Heated seats control unit |
| 52 | 25 A Fresh air blower relay, onboard supply control unit |
| 53 | 25 A Central convenience control module / 30 A Lighting circuits |
| 54 | Unassigned |
| 55 | Unassigned |
| 56 | Unassigned |
| 57 | 30 A Crash data recorder / accident data memory |
| 58 | Unassigned |
| Fuse No. 47 (25 A) controls the cigarette lighter. Fuses for auxiliary 12 V power sockets are located separately within the panel. | |
Relay Panel
Located above the main interior fuse panel.
| Diagram | |
|---|---|
|
|
| No. | Relay Designation |
| B1 | J681 - Terminal 15 power supply relay 2 (460) |
| B2 | Unassigned |
| B3 | Unassigned |
| B4 | J689 - Terminal 30 power supply relay 2 (449) |
| B5 | J9 - Heated rear window relay (53) |
| B6 | J413 - Dual-tone horn relay (449) |
| B7 | J729 - Dual washer pump relay 1 (395/404) |
| B8 | J730 - Dual washer pump relay 2 (395/404) |
| B9 | J59 - Load reduction relay (X-contact) (460) |
|
|
| 1 | Headlight washer system relay (646) |
| 2 | Fuel pump relay (646), headlight washer system relay (53) |
| 3 | Terminal 50 power supply relay (645), starter relay 1 (645) (from November 2011), fuel pump relay (449) |
| 4 | Auxiliary heater relay (645) (up to October 2011), load reduction relay (X-contact) (644) (from November 2011), heated rear window relay (645) (from May 2012) |
| 5 | Fuel injection system relay (646), fuel pump shut-off relay (404) |
| 6 | Starter relay 2 -J907- (507) (from November 2011) |
| 7 | High-heat output relay (644) (up to October 2011), Terminal 15 power supply relay (645) (from November 2011), auxiliary heater relay (53) |
| 8 | Electric fuel pump relay 2 (646), fuel pump shut-off relay (646) |
| 9 | Low-heat output relay (645) (up to October 2011), heated rear window relay (645) (from November 2011), load reduction relay (X-contact) (from May 2012) |
Individual auxiliary relays may be situated in the driver's footwell, including the anti-theft alarm remote receiver for taxi packages or roof fan relay 1.