Hi need help, I have removed a Meta 367 v2 alarm, cut off a wires joined and connected wire by the battery. Looped the connection under seat. Everything works, engine turns over but no spark. In the loom with the connections there are 2 pink wires and 2 white wires that are joined is this the problem.
Hmm. The only pink wire shown on the 996 diagram is the wore from the flasher unit to the indicator switch and although alarms are usually wired into the flashers the connections are normally made to either side downstream of the indicator switch. And, the only white wires shown in the 996 diagram are for the headlight circuit, so also unlikely to be the cause of no sparks. The white wire between the fusebox and the headlight relay is live at ignition on, so may have been used for a switched ign feed to the alarm. Alarms on Ducatis generally break the starter circuit and the fuel pump relay circuit. Disabling the fuel pump relay curts the sparks, fuel pump and injectors. If there are no sparks there is almost certainly no fuel pump. Does it run for a couple of seconds at ignition on?
No just starter motor turning it over. The pink and white wires are larger in diameter and were like that ( capped off ) before I removed alarm. It just seems strange that they are in the loom with no other continuation.
As Derek says above and based on you saying there no fuel pump priming the circuit for the fuel pump, injectors & coils is not intact; the removal of the alarm has broken it. I’d go back over the wiring that did go to/from the alarm and check it all again. You’ll may find there’s a 2 pin plug that needs to have its terminals bridged. At least that was the case on my 748 when I removed a Datatool alarm. Re the pink & white wires, as Chris says, follow them to see where they go. I doubt they’re alarm wires as those are usually all black.
I did find there’s a 2 pin plug that needs to have its terminals bridged, so that was the one I did under the seat. Will investigate pink and white wires tomorrow.
On reflection this morning and I’m dusting off some memories in my head but on my 1999 748 iirc there we’re actually 2 x 2 pin plugs in use, one on the LHS of the bike under the seat and another on the RHS somewhere between the seat and going under the fuel tank. Initially when I took out the alarm and its wiring harness I had no starter and no fuel pump. I went through a whole load of iterations of different connections, more trial & error than anything else, some of which resulted in your symptoms ie turns over but no fuel/spark. Eventually, I discovered that both the 2 pin plugs had to be connected to the alarm circuit, ie when the alarm was completely removed those 2 connectors had to be connected to each other which is what was happening through the alarm albeit the alarm has various switches on its PCB. Just bridging the terminals on one didn’t do the trick fully. Having said all that, and as a caveat, I had also removed & refitted most of the main loom so I may be getting a bit muddled in my memories. Also every alarm’s installation is slightly different. I’d see if @Derek has anything further to add as he’s an expert in these matters
If professionally fitted the wires will be spliced in to the main loom under the cable sheath. Would pay to carefully peel back the outer layer and see what’s happened underneath. It looks like the ignition circuit has been used as one of the 2 immobiliser circuits. Find the break and reconnect. You can get the fabric harness tape on eBay to make it look as new.
I've seen these plugs on some, but not all, of the 748/916/996 bikes that I've taken alarms off. That's maybe 4 or 5 bikes. As far as I know it was for the fitment of a tilt switch for track use or maybe a requirement for some markets, which would explain why they are an OEM fitment. I remember doing a 916 a few years ago where removing the alarm was as simple as disconnecting it from the 2 plugs and joining them together.
It looks like you are going to have to chase the missing volts. There are 2 relays below the seat, one is the injection relay and the other is the fuel pump relay. They should both click at ignition on. Do any of them? The injection relay should have 2 red wires to pins 30 and 86, both supplied with 12V through the 5A fuse. Check for these voltages. The fuel pump relay should have 12V at pin 30 supplied through the 20A fuse. Check for a voltage at ignition on. The fuel pump relay should also have 12v on pin 86 supplied by the kill switch. Check for a voltage there when the kill switch is set to ON. There are 2 wires at pin 87 of the fuel pump relay, a brown/white to the fuel pump and another wire which supplies power to the coils and injectors. (The colour of the other wire isn't shown on the diagram I have but possibly brown/white or brown.) Once we have established which wires have power and which don't you should hopefully be able to trace them back in the loom.
Thanks Derek, only one relay is clicking, have changed them over and still the same one, so relays OK. The one not clicking has 1 red, 1 red/white, 1 pink/black and a brown. Will check tomorrow for voltage.
OK Paul. The official wiring diagrams don't show the colours for the injection system wiring and the Haynes manual shows most but not all of them but the colours shown appear to different from what yours has. However I'm fairly sure that it is the fuel pump relay that is not operating, probably because there is a break in one of the wires where the alarm was fitted. There would normally be 12V at pins 30 and 86 of the relay. If you unplug the relay you will see the pin numbers on the base. I suspect that the wire supplying pin 86 will be the culprit. I will wait to see what your measurements come up with.
Hi Derek Mistake both relays do click. Offside relay Pins 30 12V, 86 12V, 87 5.35V, 85 0V ignition on. 30 12V, 86 12V, 87 0V, 85 0V ignition off. nearside relay Pins 30 0V, 86 12V, 87 0.2V, 85 0V. ignition on. All 0V ignition off. The nearside 30 pin is a Red wire.
Unfortunately I don't know which relay is which. If the bike was in front of me I'm sure I could soon work it out. However, 12V at pins 30 and 86 of both relays with ignition on or off is a good sign and what we should see. If there is 12v at pin 86 and pin 85 is at 0V then the relay should switch (you say both click so that should confirm that they are). The diagram though shows 12v with ignition off for pins 30 and 86 of the injection relay AND pin 30 of the fuel pump relay! They are both supplied from the battery via the 5A and 20A fuses so should be live at all times. Also, I'm not happy with the output voltages on pin 87 of either of the relays. When the relay clicks it should operate an internal switch contact joining pin 30 to pin 87, so with ignition on there should be 12V at both pin 87s. The injection relay pin 87 should send 12V to the ECU, turning it on. the ECU in turn sends a ground signal to pin 85 of the fuel pump relay switching it on. Pin 87 of the fuel pump relay should then be at 12V which is sent to the pump, coils and injectors. A known good working relay would be a big help in diagnosing this. This is the diagram I am working on. How does it compare with what you see on the bike? A you can see it's pretty vague on the wire colours to the relays.
