Volvo Penta D1-20 Start Panel Query

[Blue Seas]

Volvo D1-20 was running absolutely fine until I had to swap out the start batteries for new.
I now get 13.6V at the engine battery switch and almost that at the starter motor main +ve terminal - When I go to the start panel I get the two 'beeps' after warm up but absolutely nothing when I then go to the start (turnover) button.
My question therefore is whether or not the start button is 'smart' in any way i.e. Is it monitoring any engine parameters before allowing 12v through to start or is it simply a relay type switch meaning I am looking at either that switch or the starter motor relay for the fault? There is no temporary 'blip' in starter battery voltage when I press start suggesting that it is not attempting to take anything out of the battery.
Was fine beforehand.
Cheers.

 

[Boater Sam]

Have you left a wire off the battery when you replaced it?

 

[Blue Seas]

Have you left a wire off the battery when you replaced it?

First thing I double checked - looks identical to the photos I took on removal, but I'll treble check in the morning

 

[VicS]

Volvo D1-20 was running absolutely fine until I had to swap out the start batteries for new.
I now get 13.6V at the engine battery switch and almost that at the starter motor main +ve terminal - When I go to the start panel I get the two 'beeps' after warm up but absolutely nothing when I then go to the start (turnover) button.
My question therefore is whether or not the start button is 'smart' in any way i.e. Is it monitoring any engine parameters before allowing 12v through to start or is it simply a relay type switch meaning I am looking at either that switch or the starter motor relay for the fault? There is no temporary 'blip' in starter battery voltage when I press start suggesting that it is not attempting to take anything out of the battery.
Was fine beforehand.
Cheers.

It sounds like a very bad connection somewhere between battery and engine. It could be on either positive or negative side or it could be a defective battery isolation switch.

Remember that a digital voltmeter / multimeter draws a very small current and can give you a near normal voltage reading through a bad connection. Guaranteed to make a fool of you sooner or later if using a digital meter to look for bad connections Yep, I have the tee shirt.

Stick some load on the system and recheck your voltages or even a load such as an old fashioned car headlight bulb in parallel with the meter.

 

[Blue Seas]

All sorted thanks, wiring and batteries were fine, just a sticky starter solenoid.