Owner's Manual

Table Of Contents

PAC-audio.com

Pacific Accessory Corporation

Page 5

Rev. V12

Date:092019

Advanced Amplier Interface for

Chrysler / Dodge / Jeep / RAM

AP4-CH41 (R.2)

Restoring Factory Settings

Firmware Updates

The AmpPRO app will also allow you to update the

interface with new rmware as it becomes available.

Please visit:

www.pac-audio.com or contact our tech support

department to see if there is a rmware 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 le and select

it. This will begin the updating process. Once nished,

disconnect the interface from the PC and resume normal

operation.

AmpPRO PC App

Interface Reset

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:

• Chime volume level

• Enable / Disable Factory Chimes

• Minimum volume level

• Enable / Disable factory EQ

• Factory EQ frequency

• Factory EQ Q factor

Restore Radio to Non-Amplied

If the AP4-CH41 was installed to a factory non-amplied radio, the radio was programmed to output a pre-amplied audio signal

by the AP4. With the AP4-CH41 module and harness removed and the radio connections restored back to factory, do two full

sleep cycles on the vehicle to recongure the radio back to it's factory state. To do a sleep cycle, make sure the vehicle's ignition

is off, close all doors, trunk and / or tailgate, lock the vehicle with the keyfob and let it sit for at least ve minutes. To wake the

vehicle back up, unlock the doors, turn on the ignition, and wait for the radio to come on. Once both sleep cycles have been

performed, test the radio to verify that you have audio and that it is variable with the radio's volume knob. If the audio is still only

on the rear channels and does not change with the volume knob, repeat the sleep cycle process.