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Pacific Accessory Corporation
Page 6
Rev. V12
Date:092019
Advanced Amplifier Interface for
Chrysler / Dodge / Jeep / RAM
AP4-CH41 (R.2)
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.
Cannot hear uConnect or nav voice - Use the
volume knob while either of these voice prompts
are active to adjust voice volume.
3.
Cannot hear chimes - Set chime volume using
process outlined in Setup and Configuration, or
using the AmpPRO app. If you still do not hear
chimes, be sure that you are using the remote
output from the AP4 to turn on your aftermarket
amplifier.
4.
Low volume setting on radio is too loud - Set
minimum volume using process outlined in Setup
and Configuration, or using the AmpPRO PC app.
5. If for any reason the AmpPRO module becomes
unresponsive, or will not power up with the key
on, you can always reset the interface by turning
the key to the ignition position, then pressing and
holding the Volume Down button on the factory
SWC for 12 seconds until a tone is heard.
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 / CAN Activity
LED2
Blink Amber
USB Connection Detected
Both LEDs
Alternate Blinking Red
Programming Button Being Held:
Performing Memory Reset
No Action From User:
Vehicle Data-Bus going to sleep
LED Legend
LED 1
6.
LED 1 is lit up red, but there is no audio - You
have installed the Amp PRO into a non-amplified
vehicle. You must have DIP switch 4 on for this
scenario.
7. Audio is only playing out of the rear speakers and
the volume level does not change when you roll
the volume knob - You have re-configured the
radio in a non-amplified vehicle and still have the
cabin speakers connected to the factory radio.
Aftermarket amplification on the cabin speakers
must be used in this scenario.
