Skoda Octavia fuel pump relay not triggering.

Checked the fuses ? Skoda Octavia (2007) – fuse box diagram Year of production: 2007 Fuse box in engine compartment Version 1 Skoda Octavia - fuse box - engine compartment Skoda Octavia – fuse box – engine compartment (version 1) Number Power consumer Amperes F1 Pump for ABS 30 F2 Valves for ABS 30 F3 Not assigned — F4 Measuring circuit 5 F5 Horn 15 F6 Valve for fuel dosing 15 F7 Not assigned — F8 Not assigned — F9 Activated charcoal filter, exhaust gas recirculation valve 10 F10 Leakage diagnosis pump 10 F11 Lambda probe upstream of catalytic converter, engine control unit 10 F12 Lambda probe downstream of catalytic converter 10 F13 Control unit for automatic gearbox 15 F14 Not assigned — F15 Coolant pump 10 F16 Windshield wiper lever and turn signal light lever 5 F17 Instrument cluster 5 F18 Audio amplifier (sound system) 30 F19 Radio 15 F20 Phone 5 F21 Not assigned — F22 Not assigned — F23 Engine control unit 10 F24 Control unit for CAN databus 5 F25 Not assigned — F26 Not assigned — F27 Not assigned — F28 Engine control unit 25 F29 Actuation for coolant pump after-running 5 F30 Control unit for auxiliary heating 30 F31 Front window wiper 30 F32 Not assigned — F33 Not assigned — F34 Not assigned — F35 Not assigned — F36 Not assigned — F37 Not assigned — F38 Radiator fan, valves 10 F39 Clutch pedal switch, brake pedal switch 5 F40 Ignition coils 20 F41 Not assigned — F42 Actuation of fuel pump 5 F43 Not assigned — F44 Not assigned — F45 Not assigned — F46 Not assigned — F47 Central control unit, Left main headlights 30 F48 Central control unit, Right main headlights 30 F49 Power supply for terminal 15 (ignition on) 40 F50 Not assigned — F51 Not assigned — F52 Power supply relay – terminal X a) 40 F53 Accessory equipment 50 F54 Not assigned — a) In order not to drain the battery unnecessarily when starting the engine, the electrical components of this terminal are automatically switched off. Version 2 Skoda Octavia - fuse box - engine compartment (version 2) Skoda Octavia – fuse box – engine compartment (version 2) Number Power consumer Amperes F1 Not assigned — F2 Windshield wiper lever and turn signal light lever 5 F3 Measuring circuit 5 F4 Valves for ABS 30 F5 Control unit for automatic gearbox 15 F6 Instrument cluster 5 F7 Not assigned — F8 Radio 15 F9 Phone 5 F10 Engine control unit, Main relay 5 F11 Control unit for auxiliary heating 20 F12 Control unit for CAN databus 5 F13 Engine control unit 15 F14 Ignition 20 F15 Lambda probe, NOx-sensor, Fuel pump relay 15 Glow plug system relay 5 F16 Pump for ABS 30 F17 Horn 15 F18 Amplifier for digital sound processor 30 F19 Front window wiper 30 F20 Not assigned 5 F21 Lambda probe 15 F22 Clutch pedal switch, brake pedal switch 5 F23 Secondary air pump 5 Air mass meter 10 Fuel high pressure pump 15 F24 Activated charcoal filter, exhaust gas recirculation valve 10 F25 Right lighting system 30 F26 Left lighting system 30 F27 Secondary air pump 40 Preglowing 50 F28 Power suppy terminal 15, Starter 40 F29 Power supply terminal 30 50 F30 Terminal Xa) 40 a) In order not to drain the battery unnecessarily when starting the engine, the electrical components of this terminal are automatically switched off. Fuse box in dash panel Skoda Octavia - fuse box - dash panel Skoda Octavia – fuse box – dash panel Number Power consumer Ampere rating [A] 1 Diagnostic socket, Engine control unit, Electrical fuel pump 10 2 Control unit for ABS, ESP 5 3 Airbag 5 4 Heating, Air conditioning system, Reversing lights 5 5 Control unit for headlamp beam adjustment 5 6 Instrument cluster, Control unit for automatic gearbox, Control unit for electromechanical power steering, Parking aid; Haldex clutch 5 7 Not assigned — 8 Not assigned — 9 Not assigned — 10 Not assigned — 11 Not assigned — 12 Central locking control unit 10 13 Diagnostic socket, Light switch, Brake light 10 14 Control unit for automatic gearbox, Selector lever lock 5 15 Central control unit – interior lights 7,5 16 Climatronic 10 17 Not assigned — 18 Parking aid 5 19 Control unit for trailer detection 5 20 Uphill-Start off-Assist 5 21 Not assigned — 22 Air blower for Climatronic 40 23 Front power window 30 24 Cigarette lighter 25 25 Rear window heater 25 Rear window heater, Auxiliary heating (auxiliary heating and ventilation 30 26 Power socket in the luggage compartment 20 27 Fuel pump relay, Injection valves (diesel engine) 15 28 Not assigned — 29 Engine control unit, Crankcase ventilation heater 10 30 Control unit for automatic gearbox 20 31 Vacuum pump 20 32 Rear power window 30 33 Electric sliding/tilting roof 25 34 Control unit for convenience functions 20 35 Anti-theft alarm system 5 36 Headlight cleaning system 20 37 Front seat heating 30 38 Heated rear seats 30 39 Not assigned — 40 Air blower for heating and air conditioning 40 41 Rear window wiper 15 42 Wipe wash pump for windscreen 15 43 Towing device 15 44 Towing device 20 45 Towing device 15 46 Heated windscreen washer nozzles 5 47 Relay for auxiliary heating 5 48 Not assigned — 49 Light switch 5 WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Have already checked all the fuses in both boxes. There is power to the relay but it won't contact.

Checked the crank sensor for non start ?

You must be getting PWR and earth at that relay 30 being your power supply as when you are pushing the contacts it works ,so other side that energies the relay is not functioning,If you check there maybe a system relay that is faulty ,should look similar to your fuel pump one,unless it’s a wiring short issue.

No - Would it still start manually if the crank sensor was faulty? How can I check it?

Hi - The under bonnet fuse box is not the same as those in the handbook . It only has one relay which is the fuel pump one. I have replaced the fuse in the dash board fuse box which is described as fuel relay activator although it was OK anyway. There are other relays hidden behind the cowling under the steering column but I have no idea what they are for.

Have looked at some older postings and they refer to a 109 relay on the board under the dashboard of most VW associated cars. It powers the ECU and it in turn powers the fuel pump relay under the bonnet. But they also mention that some MK2 Skodas are different does anyone know what the equivelant is on the tdi. How to identify it and where to find it. Haynes hardly mentions relays at all.