Apologies if this has been covered elsewhere, but here goes...
Recently, with the car left unused for about a week, I turned the key to be greeted by a very sluggish turnover. Having had similar problems in the past, I set about looking at earth points and any excessive current drains, as my battery is almost new. Nothing appeared to be out of order until I happened to notice that even with no power applied to the HU, my CD changer was still live!
My Stilo (2003 1.9 JTD) has the standard radio/cassette HU with the A09 changer installed. Having run it through various scenario's, it would appear that following occurs;
1. Manually powering HU on/off, with no key in ignition, results in normal operation - CD changer powers on/off as advertised.
2. Powering up the HU with the ignition now live, everything works as advertised. Powering down the HU by removing key from ignition results in changer remaining in some kind of locked-on state, even though HU is now off.
I've done a bit of checking and it would appear that within about 30 secs of the HU being powered down, the CD changer should follow suit. Checking the voltage at C16 on the rear of the HU would appear to confirm that this is the controlling line with regard to CD changer operation.
In manual operation, as (1) above, with the HU 'on' this line shows 11 volts and with power removed from the HU, the voltage will drop to zero after about 30 secs. Repeating the same check via ignition operation, as (2) above, shows a gradual rise at C16 from 9 up to 11 volts (over about 90 secs). Removing power from the HU results in this line remaining live permanently - hence changer remains live and causing current drain on system. Even trying to manually cycle the changer on/off at this point has no result - changer remains 'live'
Has anyone else come across this fault? My therory is that the CANBUS feeds play some role when the ignition is energised, so even when they are removed the HU feed to C16 remains. If so, then hopefully it is just a change of HU required...
If anyone has any other ideas, I'd be extremely interested in hearing from you.
I'm off to bandage up my bleeding fingers now (haven't typed this much in ages- lol).
Recently, with the car left unused for about a week, I turned the key to be greeted by a very sluggish turnover. Having had similar problems in the past, I set about looking at earth points and any excessive current drains, as my battery is almost new. Nothing appeared to be out of order until I happened to notice that even with no power applied to the HU, my CD changer was still live!
My Stilo (2003 1.9 JTD) has the standard radio/cassette HU with the A09 changer installed. Having run it through various scenario's, it would appear that following occurs;
1. Manually powering HU on/off, with no key in ignition, results in normal operation - CD changer powers on/off as advertised.
2. Powering up the HU with the ignition now live, everything works as advertised. Powering down the HU by removing key from ignition results in changer remaining in some kind of locked-on state, even though HU is now off.
I've done a bit of checking and it would appear that within about 30 secs of the HU being powered down, the CD changer should follow suit. Checking the voltage at C16 on the rear of the HU would appear to confirm that this is the controlling line with regard to CD changer operation.
In manual operation, as (1) above, with the HU 'on' this line shows 11 volts and with power removed from the HU, the voltage will drop to zero after about 30 secs. Repeating the same check via ignition operation, as (2) above, shows a gradual rise at C16 from 9 up to 11 volts (over about 90 secs). Removing power from the HU results in this line remaining live permanently - hence changer remains live and causing current drain on system. Even trying to manually cycle the changer on/off at this point has no result - changer remains 'live'
Has anyone else come across this fault? My therory is that the CANBUS feeds play some role when the ignition is energised, so even when they are removed the HU feed to C16 remains. If so, then hopefully it is just a change of HU required...
If anyone has any other ideas, I'd be extremely interested in hearing from you.
I'm off to bandage up my bleeding fingers now (haven't typed this much in ages- lol).
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