Glow plug light flashing

[Ca11um43]

I have a 1996 Mazda Bongo with the 2.5 diesel engine. It was last running a couple weeks ago, when it was parked up and the battery was disconnected while a lot of rust repairs were being done. No warning lights were on the dash. But now I have re-connected the battery I seem to have a flashing glow plug light. I have tried to read the codes with an LED but the pins I need to connect to are not there in my diagnostic port, so I guess I can't read them unless there is another way?

Instead I've had a look around the engine compartment for anything obvious, and found a broken vacuum pipe (I can't seem to upload images). From what I can see it goes from the intake and in to the solenoid for the EGR valve, and it's the one way valve that has broken in half. Could this be the cause of my problem?

[g8dhe]

As you disconnected the battery the ECU couldn't store any error codes to indicate that it had lost power, hence no codes to be read out
If you take it for a run then the various parameters that need to be stored will be restored and on your next start you should be OK, unless there is another fault in which case there will be an error code to be read out from the ECU control box under the passenger side foot well.

[Doone]

Try what Geoff said.
That broken pipe is unlikely to cause the flashing light.
Common causes of the flashing light: Fuse number 1 (in the fuse box by the drivers knee) can fail.
If the auxiliary fan (scavenger fan) is running all the time, then the temperature sensor by the handbrake is disconnected.
If the fan is not constantly running then a faulty temperature sensor can cause the flashing light.

[Ca11um43]

As you disconnected the battery the ECU couldn't store any error codes to indicate that it had lost power, hence no codes to be read out
If you take it for a run then the various parameters that need to be stored will be restored and on your next start you should be OK, unless there is another fault in which case there will be an error code to be read out from the ECU control box under the passenger side foot well.

That's the problem. I have googled how to read the codes, but everything I read says to connect a jumper wire from the TEN to GND pin, then connect the LED from B+ to FEN. But inside my diagnostic port there isn't any pins where the TEN and FEN wires should be. So I can't connect anything to them.

Unfortunately the MOT ran out a long time ago (I bought it to fix up), so I can't drive it anywhere. I have it booked in for this Tuesday (15th) so I will repair the vacuum pipe for the EGR and just hope for the best. Hopefully the light turns off on the drive to the MOT station, which is only about 4 miles away.

[Ca11um43]

Try what Geoff said.
That broken pipe is unlikely to cause the flashing light.
Common causes of the flashing light: Fuse number 1 (in the fuse box by the drivers knee) can fail.
If the auxiliary fan (scavenger fan) is running all the time, then the temperature sensor by the handbrake is disconnected.
If the fan is not constantly running then a faulty temperature sensor can cause the flashing light.

I haven't noticed the fan running all the time, but that doesn't mean it's not because I haven't really looked. So I'll double check that and fuse 1. I saw on the list of fault codes that there is one for the EGR solenoid (code 28 I believe), which is why I thought that this broken vacuum pipe which have been tbe cause. It obviously shouldn't be broken, so I'll fix that any way while I'm at it.

[g8dhe]

Regarding the diagnostic port you did notice and read the warning that it is mounted upside down in the Bongo ?

[Ca11um43]

Regarding the diagnostic port you did notice and read the warning that it is mounted upside down in the Bongo ?

Yes. I have had this problem previously when trying to find an ABS fault...When I first got the bongo it had an ABS light on, but everything I read online told me to connect the jumper wire and LED to pins that don't exist in my diagnostic port. I put a post up on one of the facebook pages and somebody gave me completely different instructions that I've not seen anywhere else. I had to put a jumper wire from TBS to GND, then count the flashes on the dashboard which ended up working perfectly for me. But that's specifically for the ABS system and doesn't help me in this situation. I now need to know how to read engine faults, but I'm back in the same situation with everything I read online telling me to connect to pins that I don't have in my diagnostic port.

This is a generic image that I found online, but my diagnostic port looks like this. TEN should be the second one in from the left, bottom row. FEN should be the fourth one in from the left, bottom row. But as you can see, those pins aren't there.