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Pacific Accessory Corporation
Page 5
Rev: V2
Date:032718
Advanced Amplifier Interface
for Toyota / Lexus
AP4-TY11
Voice / Nav Audio Connections
Installation
1.
Find your vehicle on the vehicle config chart (pages 2 - 4) to determine which config you will use.
2. Remove factory radio.
3.
Disconnect the primary 20-pin harness and the secondary 20-pin harness (when available) from the radio.
4. Connect AmpPRO harnesses to vehicle harnesses.
5.
Connect AmpPRO harnesses to factory radio.
6.
Make appropriate "A", "B" or "C" Voice / Nav audio connections (see next section for detailed information).
7.
Set any feature DIP switches that apply to your install (per the diagram above).
a.
DIP switch 1 is used for two channel mode. In this mode, both the TOSLINK and front RCA outputs (1 and 2) become
non-fading outputs.
b.
Set DIP switch 2 on (down) to lower the RCA output voltage to 4v. Leave DIP switch 2 off (up) to keep the RCA output
voltage at 5v. See troubleshooting section on page 11 for more details.
c.
DIP switches 3 and 4 are not used and should remain up.
6.
If you are using the APA-TOS1 (sold separately) refer to the instructions included with that product for its installation.
7.
Connect the AmpPRO harness to the module.
8. Connect the level control knob to the module and install in an accessible location.
9. Connect the signal cables and remote input from the aftermarket amplifier.
10. The Yellow / Black "Mute Input from Telematics" wire will only be used in conjunction with the Safety Connect / Lexus
Enform (SOS) Retention. See the Tech Brief "AP4-TY SOS Retention" at PAC-audio.com for detailed instructions.
DIP
1 2 3 4
ON
Two Channel Mode
5v / 4v Preout
Not Used
Not Used
1
2
3
4
Set DIP switches to the ON position to activate the corresponding features.
Set DIP switches to the OFF position for any features that are not desired.
Module Layout
LED 1
Interface Connector 1
Expansion Port
TOSLINK Output
(APA-TOS1 sold separately)
Programming Button
Feature Select
DIP switches
Front Output
Ch. 1(L) and 2(R)
Non-Fading Level Control
Knob Connection
USB Connection
Rear Output
Ch. 3(L) and 4(R)
Non-Fading Output
Ch. 5(L) and 6(R)
LED 2
Toyota / Lexus voice activation audio and navigation audio is located in different harnesses and different locations depending
on the year, make and model of the vehicle. If the radio has navigation or the steering wheel has a voice button (or both), to
retain this audio it is necessary to make some additional connections when using aftermarket amplifiers to power the front
speakers. There are 3 possible configurations. To determine the configuration to use, refer to the vehicle chart on pages 2 - 4.
Configuration A:
The voice / navigation positive and negative audio leads are present in the secondary 20-pin connector in pins 11 and 12 of
the factory radio connector. This can be verified by plugging the secondary 20-pin connector (see Config A diagram on page 6)
from the radio harness into the AP4-TY11 secondary 20-pin connector then looking for wires in pin positions 11 and 12 on the
factory harness side. Pins 11 and 12 will be the same pins as the White / Red and White / Blue wires on the AP4-TY11 side of
the harness. If there are no wires in these pin locations on the factory harness, Config A is not the correct one for the vehicle.
Connect the 2-pin connector labeled "A" to the 2-pin connector labeled "To Amp PRO" (See Config A diagram on page 6). The
Brown "Mute Input from Navigation" wire from the AP4-TY11 harness will not be used for this configuration.
