Owner's Manual

9
Troubleshooting Walkthrough
The PAC SWI-(RC, PS, JACK, X) interfaces are comprised of two different sections, the input section and the output section. The input section
“reads” the information from the vehicle’s control wire (or wires), and the output section outputs steering wheel commands to the aftermarket
radio based on the setting of the Radio Selector Dial and how it was programmed.
To troubleshoot issues we need to determine whether the issue lies on the input section (connections to the vehicle), the output section
(connections to the radio) or general issues with programming. Verify connections (do not use T-Taps or quick taps, it is recommended to military
splice, or solder all connections) and settings for your vehicle application, SWI interface, and aftermarket radio model at www.pac-audio.com/swi.
(If your specific vehicle is not listed, it may be necessary to select the Make of vehicle and for Model select “All Other Models” and then select
the year). If the version number programming and button learning procedure was successful and the radio will not respond to the commands
from the steering wheel, proceed to the output troubleshooting section (click here). If you are certain everything is connected as directed, use the
steps provided below to determine what troubleshooting steps to pursue.
Before proceeding, note that if you are installing an SWI and connecting to the steering wheel output connector of one of our radio replacement
interfaces (like the OS-4, OS-5, OS-2X, etc.) the SWI vehicle specific instructions will assume the connections will be made to the vehicle harness
(not to the PAC interface). If you are using the SWI and connecting to the steering wheel connector of a PAC radio replacement harness, you will
need to follow the instructions from the PAC radio replacement harness regarding Version number programming. Typically when using the SWI
connector from a PAC radio replacement interface, you will program the SWI for version 2 and you will not cut the brown or purple loop.
SWI Input Troubleshooting
1. When you turn on the ignition, does the LED (on the SWI interface) flash the same number of times as what is listed in the vehicle specific
instructions for your application? (Example is from a 2009 Chevrolet Malibu, so remember that the version number for your application
will vary based on year, make and model of vehicle that the SWI interface is being connected to.)
2. Does the LED flash the number of times indicated by the version number listed for your application? If the answer is YES, proceed to
step 4. If the answer is no, continue with step 2.
3. Turn off the vehicle’s ignition and open the driver’s door. Press and release the programming button. Does the LED illuminate?
If the answer is YES, the interface appears to be wired to a constant 12 volt source when it should be wired to an accessory 12 volt
source (check connections for the red wire on the SWI interface). If the answer is NO, continue with step 3.
4. Try programming the vehicle version number once again using the following procedure:
a. Press and hold the Program Button on the SWI interface while turning the vehicle to the accessory position. The LED will turn on.
b. Release the Program Button and the LED will turn off.
c. Press the Program Button the number of times indicated by the vehicle specific installation instructions (www.pac-audio.com/swi).
Each time you press and release the Program Button, the LED will turn on and off. Once you press the Program Button the
instructed number of times, wait 3 seconds. The LED should flash the same number of times as the intended version number. If it
does not, turn off the ignition, open the driver’s door and start again at step 3a. If you have attempted this several times with no
luck, disconnect all connections to the SWI interface except the red (accessory) and black (ground). Disconnect the 3.5 mm jack (or
Blue/Yellow steering wheel output wire) from the back of the radio. Check DC voltage by placing the red lead of a multimeter to the
red wire and the black lead of the meter to the black wire to verify you are getting at least 12 volts to the interface (with vehicle
running). If you are not, Attempt step 3a again. If you had to disconnect the vehicle control wires to successfully program the
version number, you will need to verify the proper connections to the vehicle control wire before moving to step 4. You can find
information on how to locate the correct wire based on the programmed version number for your vehicle.
i. For help locating the control wire for version 3, 8 or 9, click here.
ii. For help locating the control wire for version 1, 2 or 4, click here.
iii. For help locating the control wire for version 6 or 7, click here.
iv. For help locating the control wire for version 5, click here.