PAC RP4.2-TY13 Manual Download Page 5

Radio Replacement and 

Steering Wheel Control Interface 

for Select Toyota Vehicles

RP4.2-TY13

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PAC-audio.com

Pacific Accessory Corporation

Page 5

Rev: V3

Date:032222

1. 

Turn the ignition on. The LED on the interface will turn on and the +12v accessory wire will turn on.

2.  Turn on the radio and check volume, balance and fade. If you do not hear any audio you may need to cycle the ignition to 

initialize the factory amplifier.

3.  If the overall volume is too low, use the gain adjustment on the side of the RP4.2 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 RP4.2 until some distortion is 

heard, then back it down a little.

4. 

If you have a JBL system and there is no audio, please make sure the Blue / White wire in the radio connector is hooked up 

properly. If there is still no audio, reset the interface according to the procedure in the next section.

5.  If fading is acting inconsistent, please ensure that all speakers are connected to the proper polarity.

6.  Verify that all SWC are functioning properly. If any of the SWC are not functioning 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 restore the interface to factory default settings by pressing and holding the programming button on the side of the module 

until the status LED starts blinking red. Once the LED starts blinking red, release the button. You must release the button while 

the LED is blinking red in order to perform the reset. Please note, the LED will go through two stages before it starts blinking red. 

First it will blink green, then amber, then red.

This reset will restore the following settings to their factory defaults:

• 

SWC Mapping

• 

Factory Amplifier Settings

•  Real Time Fade will be reset to on

Testing and Verification

RadioPRO App

Use of the RadioPRO App allows 

you to do the following:

• 

Configure User Interface Options:

• 

Factory amplifier settings (Bass, 

Mid, Treble, Gain, Fader and 

Balance)

•  Real Time Fading

•  Update Product Firmware

• 

Read Firmware/Hardware Versions

PLEASE NOTE: 

The interface must be connected to the vehicle when using the following features of the Radio PRO App:

• 

Factory Amplifier Settings

The interface does not need to be connected to the vehicle when using the following features of the Radio PRO App:

•  Firmware Updates

• 

Reading firmware/hardware versions

Summary of Contents for RP4.2-TY13

Page 1: ...Entertainment 3 Speaker fading on factory amplified systems is only supported with the amplified output connection of the RP4 2 TY13 4 When using real time fade if the fader setting is biased more to...

Page 2: ...ot Used 1 Set the Radio Select DIP switches according to the radio you are installing 2 Wire the aftermarket radio to the RP4 2 TY13 Interface 4 harness according to the wiring connections chart on th...

Page 3: ...ll 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 as...

Page 4: ...cedure 1 Turn the key to the ignition position 2 Press and hold the programming button until the LED begins blinking amber When the LED begins blinking release the programming button The LED will ligh...

Page 5: ...the SWC are not functioning 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 Factor...

Page 6: ...n the module will default all values back to middle RadioPRO App cont Firmware Updates The RadioPRO app will also allow you to update the interface with new firmware as it becomes available Please vis...

Page 7: ...ts in material or workmanship This warranty does not cover installation expenses Attempting to service or modify our products or operate them outside their recommended usage will render this WARRANTY...

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