PAC TY1A-RS Manual Download Page 4

Radio Replacement and 

Steering Wheel Control Interface 

for Toyota / Lexus / Scion Vehicles

TY1A-RS

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PAC-audio.com

Pacific Accessory Corporation

Page 4

Rev: V4

Date:090519

Default Steering Wheel Control Programming

IMPORTANT! 

The  interface  comes  pre-programmed  for  all  of  the  vehicles  factory  SWC  functions  and  does  not  require 

programming unless you wish to re-assign the SWC functions, or utilize short press long press dual command functionality. The 

SWC can always be restored to default settings by pressing and releasing the program button on the side of the interface once 

and waiting 7 seconds for the LED to flash 3 times.

Optional Steering Wheel Control Programming

If you wish to re-assign the SWC functions, utilize short press long press dual command functionality, the interface must be 

programmed in the specific order shown in the chart on page 5. If you come across a function in the chart that your steering 

wheel does not have, or you do not want to program, press and release the programming button on the side of the interface to 

skip that function. The LED will flash off and on confirming that you have successfully skipped that function and are ready to 

proceed to the next one.

Short Press Long Press Dual Command Functionality

This feature allows you to assign two aftermarket radio functions to each of the vehicles SWC buttons. It can be used with as 

many of the buttons as the user likes or none at all. When this functionality is implemented, quickly pressing and releasing a 

SWC button will initiate the short press command while pressing and holding a SWC button for longer than two seconds will 

initiate the long press command. 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.

Steering Wheel Controls 

Alpine

JVC

Kenwood

Clarion

Pioneer

Sony

Fusion

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Mode

Source

Source

Source

Source

Source

Source

Source

Back

Band

Att

Play

Band

Band

Band

N/P

Voice

Voice

Voice

Voice

Voice

Voice

Voice

Mute

Answer

Receive

Receive

Off Hook

Send 

Answer

Answer

Power

End

End

Reject

On Hook

End

End

Reject/Source N/P

Enter

Power

Power

Preset Up

N/P

Mute

N/P

Power

Arrow Up

Track Up

Track Up

Track Up

Track Up

Track Up

Track Up

Track Up

Arrow Down Track Down Track Down Track Down Track Down Track Down Track Down

Track Down

Arrow Left

Preset Down Disc Down Disc Down N/P

Preset Down Preset Down N/P

Arrow Right Preset Up

Disc Up

Disc Up

N/P

Preset Up

Preset Up

N/P

Default SWC Button Assignments

Summary of Contents for TY1A-RS

Page 1: ...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 o...

Page 2: ...s shown above will not be used Below you will find the combinations needed for most vehicles Interface Connector 1 Interface Connector 2 Interface Connector 4 Interface Connector 3 Vehicle Connector 1...

Page 3: ...og wires at the radio Insulate the Yellow and Black loose wires in the OBD 2 V3 connector they will not be used Connect the OBD 2 V3 connector to the vehicle s OBDII connector found under the dash on...

Page 4: ...xt one Short Press Long Press Dual Command Functionality This feature allows you to assign two aftermarket radio functions to each of the vehicles SWC buttons It can be used with as many of the button...

Page 5: ...e order shown in the chart If you press the wrong button the LED will not respond at all 4 If you need to program more buttons repeat step 3 for each additional audio function on the steering wheel 5...

Page 6: ...ctioning properly you may need to reset the interface or follow the re calibration procedure above 7 The LED and radio will turn off when the ignition is turned off Restoring Factory Settings You can...

Page 7: ...epartment to see if there is a firmware update for your interface In order to update the interface all DIP switches must be set to the down position Connect the interface to your PC and select Update...

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