Guest cmp936@gmail.com Posted August 24, 2017 Share Posted August 24, 2017 Hello, We've had a swift Kontiki 645 for about 20 months. Since replacing the main engine battery we've noticed a few things. 1. The step no longer retracts when you start the engine as before. 2. Fridge not working on 12v whilst on the road. 3. Green light on main unit in the cupboard not illuminating as before. Any ideas? can't find any blown fuses, is it maybe that the leisure battery needs replacing too? Thanks Col. :- (?) :-S Link to comment Share on other sites More sharing options...
sshortcircuit Posted August 24, 2017 Share Posted August 24, 2017 It sounds as though the connection to the split charge relay, or fuse, has not been connected. In the engine compartment , centrally above the rocker cover there should be a large plastic cover held on by 4 nuts. Under this cover there should be two relays and a fuse block Trace the heavy wiring back to the battery to ensure it has been connected. Should also find a 50Amp fuse in this line. Re-read post and look for the 50A fuse near the starter battery. Leisure battery should be ok. Link to comment Share on other sites More sharing options...
sshortcircuit Posted August 24, 2017 Share Posted August 24, 2017 If your user name is your email address, not a good idea. Link to comment Share on other sites More sharing options...
Guest cmp936@gmail.com Posted August 24, 2017 Share Posted August 24, 2017 Ok thank you for the information, I'll look into it when we're back at the storage depot next. cheers Col. Link to comment Share on other sites More sharing options...
Guest cmp936@gmail.com Posted August 24, 2017 Share Posted August 24, 2017 Ok thanks I'll change it. Link to comment Share on other sites More sharing options...
Keithl Posted August 24, 2017 Share Posted August 24, 2017 cmp936@gmail.com - 2017-08-24 4:49 PM Ok thanks I'll change it. Col, Unfortunately you cannot change your user name after you have registered. If you re-register with a 'made up' name them PM me (I am an assistant Moderator) I will delete this thread containing your email address. Keith. PS And welcome to the forum!!! Link to comment Share on other sites More sharing options...
Alanb Posted August 24, 2017 Share Posted August 24, 2017 cmp936@gmail.com - 2017-08-24 2:40 PM Hello, We've had a swift Kontiki 645 for about 20 months. Since replacing the main engine battery we've noticed a few things. 1. The step no longer retracts when you start the engine as before. 2. Fridge not working on 12v whilst on the road. 3. Green light on main unit in the cupboard not illuminating as before. Any ideas? I am not familiar with Swift wiring, but it occurs to me that items 1 and 2 above could both be due to the D+ signal not reaching the 12V Distribution Board. This again is an area where Allan of Aandacaravanservices has a wealth of expertise. Alan Link to comment Share on other sites More sharing options...
sshortcircuit Posted August 24, 2017 Share Posted August 24, 2017 Alanb - 2017-08-24 7:17 PM cmp936@gmail.com - 2017-08-24 2:40 PM Hello, We've had a swift Kontiki 645 for about 20 months. Since replacing the main engine battery we've noticed a few things. 1. The step no longer retracts when you start the engine as before. 2. Fridge not working on 12v whilst on the road. 3. Green light on main unit in the cupboard not illuminating as before. Any ideas? I am not familiar with Swift wiring, but it occurs to me that items 1 and 2 above could both be due to the D+ signal not reaching the 12V Distribution Board. This again is an area where Allan of Aandacaravanservices has a wealth of expertise. Alan Correct, read second post. Link to comment Share on other sites More sharing options...
Alanb Posted August 24, 2017 Share Posted August 24, 2017 Sshortcircuit, I did read, and at you suggestion have read again the second post (yours). If I have understood correctly, you were suggesting that the connection to the starter battery +ve had not been reconnected, or that the 50A fuse was faulty. I was suggesting that the symptoms that the OP is experiencing could be due to a problem with the D+ connection. This does not conflict with or repeat what you have suggested. It adds to it. Alan Link to comment Share on other sites More sharing options...
sshortcircuit Posted August 25, 2017 Share Posted August 25, 2017 Alan Having owned a 660 Kontiki I am aware of how it is wired. The connection is direct from the starter batter via. a 40A fuse to the split charge relays. There is no connection to D+ . The circuit diagram is available on Sargent's web site Link to comment Share on other sites More sharing options...
Alanb Posted August 25, 2017 Share Posted August 25, 2017 sshortcircuit - 2017-08-25 8:16 AM Alan The connection is direct from the starter batter via. a 40A fuse to the split charge relays. There is no connection to D+ . The circuit diagram is available on Sargent's web site Thanks for the pointer to Sargent's website, however I have studied the Swift MH Service Book page 17. In the top RH corner of the diagram there are two relays, with coils connected in parallel, and supplied from the"ALTERNATOR FIELD CIRCUIT", this is what is commonly refered to as "D+". The RH relay in the diagram is the split charge relay, and the LH relay in the diagram is the fridge relay. The fridge relay also supplies the step auto retract relay, the "Osberview" unit, and provides a signal to the "main unit". If the D+ signal is missing, the leisure battery will not charge from the alternator, but this might not be immediately apparent if the OP's vehicle is used on EHU. If the fridge relay does not receive the D+, or is faulty the symptoms described by the OP will follow. My reccommendation to the OP is to confirm that the leisure battery is receiving charge when the engine is running. If not then investigate the connections to the relay coils including the earth or negative connection. Alan Link to comment Share on other sites More sharing options...
plwsm2000 Posted August 25, 2017 Share Posted August 25, 2017 As others have said, this looks like a D+ issue. On my electroblock (EBL223) there is a smal slide switch that selects either "D+ active high" or "D+ active low. Someone had managed to knock this switch into the wrong position (not easily done) and I had exactly the same issues that you are experiencing. Putting the switch in the correct position fixes it. Phil Link to comment Share on other sites More sharing options...
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