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slymtl2001

Avic wiring Help

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Over the weekend I installed an AVIC Z110BT (Which I later flashed to AVIC Z120BT) on my 04 911T following the DYI found on this site. There was a mention in it to swap the red (+12V) and yellow (ACC) in order for the unit to work properly. My Car's "B" harness doesn't have a yellow (ACC) wire. I had the PCM unit with Fiber Optic amp before. I did a search and found an article on where to use a different source for the Switched power (Yellow) using the Tel. option Connector. I connected my AVIC's yellow wire to the switched power of the tel Option Connector and connected the Avic's Red wire with the car's red wire. The head unit power up OK and turn on when I switch the key to the ACC position telling me that everything is fine. The problem I have is that the head unit doesn't retain any AV settings (Ie: HPF, EQ, BSM Station saves etcc...). Everytime I remove the key and power the unit back up I have to re-adjust all settings over again like if the red (Constant 12V) doesn't seems to remain ON. Can someone confirm that the RED Wire on 04 911T remains ON all the time?.

Other problem I have is with the GPS. I did the GPS bypass (Moving the pin on the AVIC Connector one position and grounding it.) When I go to the NAvi Settings, Connection Status and look for the Parking Brake, it's says ON. Shouldn't this be saying OFF if I grounded the pin?. While driving the GPS unit doesn't doesn't seems to know that I'm moving. Reason I'm saying this is that I did enter a destination route, it's said calculating but was very quiet during the course of my drive. I knew where I was going, I just wanted to see when it would warn me take a left or take a right here etc... it never did. When I pressed on the route I was on on the screen showing how many miles to next turn, it said 40 Miles to next turn eventough it was showing 20 mile to next turn. A few minutes later around 10 miles before next turn, when I pressed again it again said 40 mile to next turn!!!, letting me believe that unit thinks I'm not moving. So should the Parking Status be saying OFF all the time if it is grounded?. If that's the case, then that pin that I moved one slot to the right on the AVIC connector isn't grounded very well!!.

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Cant help you with the power issues, but you want the parking brakes to appear ON, this is the override that allows you to be able to do inputs and video while driving. It also appears that you do not have the Vehicle Speed Sensor (VSS) connected properly and/or the GPS antennae connected or visible to the satellites. Check the satellite reception in the GPS signal menu for singal, this should be giving speed and direction updates, the VSS supplies speed when in a tunnel or no signal.

Hope this helps.

//Anders

Over the weekend I installed an AVIC Z110BT (Which I later flashed to AVIC Z120BT) on my 04 911T following the DYI found on this site. There was a mention in it to swap the red (+12V) and yellow (ACC) in order for the unit to work properly. My Car's "B" harness doesn't have a yellow (ACC) wire. I had the PCM unit with Fiber Optic amp before. I did a search and found an article on where to use a different source for the Switched power (Yellow) using the Tel. option Connector. I connected my AVIC's yellow wire to the switched power of the tel Option Connector and connected the Avic's Red wire with the car's red wire. The head unit power up OK and turn on when I switch the key to the ACC position telling me that everything is fine. The problem I have is that the head unit doesn't retain any AV settings (Ie: HPF, EQ, BSM Station saves etcc...). Everytime I remove the key and power the unit back up I have to re-adjust all settings over again like if the red (Constant 12V) doesn't seems to remain ON. Can someone confirm that the RED Wire on 04 911T remains ON all the time?.

Other problem I have is with the GPS. I did the GPS bypass (Moving the pin on the AVIC Connector one position and grounding it.) When I go to the NAvi Settings, Connection Status and look for the Parking Brake, it's says ON. Shouldn't this be saying OFF if I grounded the pin?. While driving the GPS unit doesn't doesn't seems to know that I'm moving. Reason I'm saying this is that I did enter a destination route, it's said calculating but was very quiet during the course of my drive. I knew where I was going, I just wanted to see when it would warn me take a left or take a right here etc... it never did. When I pressed on the route I was on on the screen showing how many miles to next turn, it said 40 Miles to next turn eventough it was showing 20 mile to next turn. A few minutes later around 10 miles before next turn, when I pressed again it again said 40 mile to next turn!!!, letting me believe that unit thinks I'm not moving. So should the Parking Status be saying OFF all the time if it is grounded?. If that's the case, then that pin that I moved one slot to the right on the AVIC connector isn't grounded very well!!.

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When I go to the GPS Status I do see Speed Pulse (Counts) large number. GPS ANT shows OK, Parking Brake shows ON, Illumination OFF and Back Signal Low. When I actual arrived to my destination it did say "You arrived at your destination", so I'm a bit confused as to why it's wasn't able to detect movement while I was driving but was able to tell me that I arrived at destination!

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You might try the other wire in the phone harness for constant power. The phone harness has three wires. One was switched, constant, and brown was ground.

Edited by function12

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You might try the other wire in the phone harness for constant power. The phone harness has three wires. One was switched, constant, and brown was ground.

I am using the Switched Green/Brown wire from the tel. connection. I found the problem and fixed the issue. I had my car's red wire, which is Constant 12V, hooked to the AVIC's red wire (Switched power). The Avic's Z110BT constant wire is yellow not red. So you need to hook the AVIC's yellow wire with the car's RED wire and the AVIC's red wire with the green/brown wire fron the Tel. connector. Everything works perfectly know.

Thanks

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