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TY1A-RS
Introduction and Features
The TY1A-RS interface allows the replacement of a factory radio in select Toyota/Lexus/Scion vehicles and will retain
factory features such as steering wheel controls (SWC), USB ports (in most cases), AM / FM antenna, and the factory
audio amplifier. This interface also allows you to program two radio functions to each SWC button by using short press
long press dual command functionality, and also provides outputs such as: vehicle speed signal (VSS), illumination,
reverse trigger and parking brake.
Important Notes
1. Connection of the OBD connector, with the White / Red and White / Black wires, is not always necessary. Use of these wires
will be dependent on whether or not the aftermarket radio requires specific connections, and whether the vehicle provides these
outputs at the radio. See the "Installation Steps" section starting on page 3 for additional information.
2. Adjustment of the vehicle settings through the original radio's vehicle settings menu will be disabled after installation of the new
radio. It is advised to make sure all settings are as you desire prior to removal of the original radio.
3. The TY1A-RS does not retain Rear Seat Entertainment.
4. After installation, if you do not initially hear any audio, you may need to cycle the ignition again to initialize the factory amplifier.
5. Speaker fading on factory amplified systems is only supported with the "amplified output" connection of the TY1A-RS.
6. When using real time fade, if the fader setting is biased more to the front or rear, as the radio turns on the sound may begin at
the default setting and then quickly transition to your custom setting.
7. Aftermarket radio features such as High Pass Filters (crossovers), DSP or "Network Mode" will interfere with proper fader
function. In order for the TY1A-RS's fader function to work, the audio from the aftermarket radio's output must match so it can
compare the front and rear audio levels and determine the proper fader setting for the factory amplifier.
8. The USB-TY1 and USB-TY2 are included in order to retain the factory USB port for most (but not all) applications. Please refer
to www.pac-audio.com to see which harness you will need.
9. Best Kit's part number BAA44 is included for vehicles that require an antenna adapter.
10. The CAM-TY11 or CAM-TY12 must be purchased in order to retain the factory reverse camera. Please refer to
www.pac- audio.com to see which harness you will need. If the required harness is not available, it is possible to hardwire the
reverse camera using the information provided in Appendix A on Page 7.
Module Layout
Programming Button
Interface Connector 1
Expansion Port
Interface Connector 2
Non-Amplified Audio Output
Amplified Audio Output
Pacific Accessory Corporation
Amplified Audio Output Level Adjustment
USB Port
© 2019 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
Steering Wheel Control Interface
for Toyota / Lexus / Scion Vehicles
Radio Select DIP switches
USB Status LED
Radio Replacement and
Module Status LED
Rev: V4
Page 1
Date:090519
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Related Manuals for PAC TY1A-RS
Summary of Contents for PAC TY1A-RS
- Page 1 7. Aftermarket radio features such as High Pass Filters (crossovers), DSP or “Network Mode” will interfere with proper fader function. In order for the TY1A-RS’s fader function to work, the audio from the aftermarket radio’s output must match so it can compare the front and rear audio levels and determine the proper fader setting for the factory amplifier.
- Page 2 Interface Connector 3 Plug Interface Connectors 1, 2 and 4 into the appropriate port on the TY1A-RS interface (using the diagram on page 1 or the label on the bottom of the TY1A-RS interface). The Connector 3 connection will be dependent upon whether or not the vehicle has a factory amplified system.
- Page 3 Pink Vehicle Speed (Vehicle Connector 2) from the TY1A-RS into the vehicle harness. Find the Sense Output White / Red (pin 9) and White / Black (pin 10) wires in the TY1A-RS harness and Light Green Parking Brake Output check for wires populating these positions on the factory side of the connector. If...
- Page 4 Please note that no long press commands are programmed by default. If you wish to assign dual command functionality to the SWC please follow the programming steps on the following page. © 2019 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global. Rev: V4 Page 4 PAC-audio.com...
- Page 5 4. If you wish to re-assign button functions you must also go through the programming listed above (Optional SWC Programing Procedure). © 2019 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global. Rev: V4 Page 5 PAC-audio.com...
- Page 6 3. If the overall volume is too low, use the gain adjustment on the side of the TY1A-RS interface to set it to the desired level. The best way to do this is to turn the volume on the radio to 3/4 volume, then turn the gain on the TY1A-RS until some distortion is heard, then back it down a little.
- Page 7 You can obtain the necessary 6v+ and ground for the factory camera from twisted Yellow / Black and Black wires labeled “OEM CAMERA POWER” in Interface Connector 2. Connectors are viewed from pin side Fig. 1 Fig. 2 © 2019 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global. Rev: V4 Page 7 PAC-audio.com Date:090519...
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Questions and answers
DOES THE TY1A RD RETAIN FULL FADER AND BALANCE
The PAC TY1A-RS retains speaker fading only on factory amplified systems and only when using the “amplified output” connection. However, proper fader function requires that the aftermarket radio's audio output matches front and rear levels. Features like High Pass Filters, DSP, or Network Mode on the aftermarket radio may interfere with fader function. Balance control is not specifically mentioned, so its retention cannot be confirmed.
This answer is automatically generated