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PAC-audio.com
Pacific Accessory Corporation
Page 10
Rev: V2
Date:032718
Advanced Amplifier Interface
for Toyota / Lexus
AP4-TY11
AmpPRO App (cont.)
Firmware Updates
The AmpPRO app will also allow you to update the interface with new firmware as it becomes available. Please visit
http://pac-audio.com/firmware to see if there is a firmware update for your interface.
Connect the interface to your PC and select "Firmware", then “Update Firmware”. Now select “Select File”. Finally, browse to the
place where you saved the file and select it. This will begin the updating process. Once finished, disconnect the interface from
the PC and resume normal operation.
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 LEDs start blinking red. Once the LEDs start blinking red, release the button.
This reset will restore the following settings to their factory defaults:
• Enable / Disable Factory Chimes
• Minimum volume level
• Enable / Disable factory EQ
• Factory EQ frequency
• Factory EQ Q factor
Troubleshooting
1.
Hiss at high amp gain - Set feature DIP switch 2 to the on (down) position to lower the output voltage of the AP4 to 4v. If you
still hear the hiss, lower your amp gains until the hiss is gone.
2.
Low volume setting on radio is too loud - Set minimum volume using process outlined in Setup and Configuration, or using
the AmpPRO application.
3.
Cannot hear beeps when pressing buttons on the radio - Set the beep volume using process outlined in Setup and
Configuration, or using the AmpPRO application. If you still do not hear beeps, check for a beep on off setting in the factory
radio menu and be sure that you are using the remote output from the AP4 to turn on your aftermarket amplifier.
4. Cannot hear the Voice Activation or Navigation Prompts, verify that the configuration connections are properly connected.
See "Voice / Nav Connections" starting on page 2 for details.
5.
Low volume setting on radio is too loud - Set minimum volume using process outlined in Setup and Configuration, or using
Action / Color
During Normal Operation
Solid Red
Module Active
Solid Green
Chime Volume Adjustment Mode
Solid Amber
Minimum Volume Adjustment Mode
Rapid Blink Any Color
DSP Activity
LED2
Blink Amber
USB Connection Detected
Both LEDs
Alternate Blinking Red Performing Memory Reset
LED Legend
LED 1
the AmpPRO application.
6. Drastic volume difference between radio sources
- The radio stores the volume of the radio source
from the last time that source was used. Readjust
the volume of the individual sources to the same
output level.
