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AP4-TY12
The AP4-TY12 provides a 6-channel pre-amp output for use with aftermarket audio equipment. Using the full range,
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other vehicle features such as factory navigation prompts, Bluetooth and Voice Activation.
An accessory controlled
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Introduction and Features
Important Notes
1. Only compatible in vehicles equipped with a data bus controlled premium sound system. To verify compatibility in Toyota,
look for a JBL logo on the radio. In Lexus, compatible applications will have a center channel or factory subwoofer.
2. The AP4-TY12 does not support retention of the Easy Speak function.
3. Toyota Safety Connect and Lexus Enform (SOS) can easily be retained. See the Tech Brief "AP4-TY12 SOS Retention" at
PAC-audio.com for detailed instructions.
4. The factory radio's speed controlled volume, DSP, and surround sound mode are not supported by the AP4 outputs.
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6. Prior to testing, cycle the ignition off and back on again to properly initilize the AP4-TY12.
7. The radio's beep setting must be enabled on the factory radio in order to hear the audible tones when making selections
through the radio.
8. Initially, if the beep through the AP4-TY12 does not match the on / off selection through the radio, cycle the beep to the
opposite setting and back, then test again.
9. The radio's beep volume and minimum volume levels are set to 0 dB by default. If you are happy with this level in your
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for more details.
10. The Radio's Nav / VR Voice, incoming E-mail tone, Ringtone, In-Call, Incoming SMS / MMS tone and Incoming SMS Voice
volumes can be adjusted through the radio's settings menu as they were prior to installation of the AP4-TY12.
11. The remote output is rated at 2A of current. If more current is needed, an external relay must be used.
12. Channels 5 and 6 are non-fading outputs. The output level of channels 5 and 6 can be controlled using the supplied level
control knob.
13. The level control knob must be connected in order to manually adjust the beep volume and minimum volume settings.
14. No adjustments can be made manually using the programming button when the module is connected to a PC.
15. Due to variations between various OEM radios and even between radio modes, the radio output voltage may vary slightly
from the selected 5 volt (or 4 volt when DIP switch 2 is down) output.
Wiring Connection Chart
To Aftermarket
Amplier
Non-FadingRearFront
1(L) 2(R) 4(R) 5(L) 6(R)3(L)
Remote Turn On Output
2A Max Output
To Radio
Non-Fading
Level Control
Knob
To Vehicle
Harness
28 - Pin
6 - Pin
10 - Pin
AP4-TY12-HAR
Remote Turn On Output (2A Max)
Mute Input From Navigation *
Mute Input From Telematics *
* See Page 2 Installation Notes 11 and 12 for further details regarding the Mute Input leads.
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