Radio shut-off delay

[n8bachelor]

Ok here's the deal. One feature I liked on my LS was the 10 minute delay timer on the electronics. When I parked and shut off the car the radio would stay on for 10 minutes or until I opened a door, whichever came first. When I installed my aftermarket Alpine deck I lost that function. Does anyone know how I can regain that feature? Is it possible without an additional adaptor (I already have tons of adaptors stuffed behind the head unit)? Attached you will see a schematic of the Alpine W200. I am thinking of trying to hook up both the red (ignition) and yellow (battery) from the H.U. to the red (battery) from the car. I fear that this will not give me the results I am looking for but rather enable the system to be played without the key (regardless of time or door position). This would be ok except for the fact that the Alpine unit requires the 'source' button to be pushed for 5 seconds to turn off the unit. Not very convenient. Attached is a schematic.

 

[SoonerLS]

I read somewhere that the delay timer is actually built into the head unit. If that's not correct, it has to be based on a signal sent from the PCM or DDM, because in looking at the connector diagrams, I don't see anything that looks like a power-sensing line. There are leads for constant power, power in run/accessory, and power in Start.

 

[beaups]

it's in the head unit. radios draw power from the line that is always on and use the ignition switched line just as a sense. You could run both power leads on your alpine to an always on lead and it will always be on (till you turn it off). OR, you could run both lines to an always on lead but on the lead that goes to the "sense" lead on the alpine install some sort of timer. My last car I used the first solution.

 

[Smokey]

I do not think it is in the head unit as my windows, sunroof and radio all continue to function for about 10 minutes or until I open a door.

 

[n8bachelor]

I read somewhere that the delay timer is actually built into the head unit. If that's not correct, it has to be based on a signal sent from the PCM or DDM, because in looking at the connector diagrams, I don't see anything that looks like a power-sensing line. There are leads for constant power, power in run/accessory, and power in Start.

Do you have a factory wiring harness for an 04 with just the basics? I am curious why there are three power connections (constant power, power in run/accessory, and power in start). I think that hooking the ignition wire of the head unit to the "power in run/accessory" is worth a shot.

I do not think it is in the head unit as my windows, sunroof and radio all continue to function for about 10 minutes or until I open a door.

I agree Smokey. Also if you leave your lights on (not auto) they will turn off in 10 minutes.... damn this car is smart!

 

[2001LS8Sport]

it's in the head unit.

Nope...wrong again. beaups, you really need to be careful what you post. You give out a lot of wrong information.

I just installed a Pioneer AVIC-Z1 in my Aviator. It uses two power supplies...one on constantly to keep the memory alive and another that is switched. The switched source is controlled by the delay feature and it may be part of the GEM module...but I'm not sure of that. I used the factory power supply for the switched source and the new head unit works just like the factory unit.

Did you install the unit yourself or have a shop do it? Did they use the factory power supplies? Did they use an adapter that may not be correct? I would tear things back apart and find the feed that is controlled by the delay module.

 

[macboy]

I read somewhere that the delay timer is actually built into the head unit. If that's not correct, it has to be based on a signal sent from the PCM or DDM, because in looking at the connector diagrams, I don't see anything that looks like a power-sensing line. There are leads for constant power, power in run/accessory, and power in Start.

If it is built into the head unit, then there must be a "door opened" signal sent to the head unit somehow, because it is not a straight 10 minute delay; it also turns off when a (front) door is opened.

 

[SoonerLS]

Do you have a factory wiring harness for an 04 with just the basics? I am curious why there are three power connections (constant power, power in run/accessory, and power in start). I think that hooking the ignition wire of the head unit to the "power in run/accessory" is worth a shot.

That's what I thought, too. I tapped that lead for the "power sense" lead on my UNI-POD adapter, but it still went off shortly after the ignition went off (as soon as the capacitors discharged, I guess), even though the head unit remained powered up.

There is a lead for the "center image amplifier, enable" on the 8-pin connector at the back of the head unit. According to the schematic, it's a yellow wire, on pin 8. I think this is a power-sense circuit to turn on the center-channel amp, so it might be a better choice, but it's an output from the factory head unit, so that line is not much use without it...

 

[beaups]

Nope...wrong again. beaups, you really need to be careful what you post. You give out a lot of wrong information.

I just installed a Pioneer AVIC-Z1 in my Aviator. It uses two power supplies...one on constantly to keep the memory alive and another that is switched. The switched source is controlled by the delay feature and it may be part of the GEM module...but I'm not sure of that. I used the factory power supply for the switched source and the new head unit works just like the factory unit.

Did you install the unit yourself or have a shop do it? Did they use the factory power supplies? Did they use an adapter that may not be correct? I would tear things back apart and find the feed that is controlled by the delay module.

Wow what other wrong information have i given out? I assumed head unit because he said he lost the feature when he replaced it. My bad there, but I don't think I frequently give out wrong information...nor do I need to be "careful".

As for wrong information, your information above is wrong. the always on line is the main power supply. the switched line is simply a sense that triggers a relay inside the head unit to tell it to power up (and the power is drawn from the always on line).

Sounds like the shop may have hooked it up incorretly (both shops to switched line) but in that case I'd think he'd lose memory everytime the car shuts down.

I think the best hookup method is to wire both power lines to an always on source. that way you can turn the radio on regardless of whether the car is on or off.