Alpine i407-WRA-JK Installation Manual - Page 18

Troubleshooting Guide Continued

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Jeep Wrangler i407-WRA-JK 20210811v1 ˜ 18/18 Troubleshooting Guide Continued Symptom Possible Cause Remedy One of the power wires does not have proper voltage Test the power wires with a digital multimeter and trace from there. 6 Headunit will not turn on. 4 pin Maestro data cable is disconnected or damaged. OBD2 cable is not plugged in. Check for proper connection or disconnected pins. Connect OBD2 connector to the OBD2 port. Main harness is not connected. Check for proper connection or disconnected pins. 7 Cannot enter SETTINGS MENU. Vehicle is in motion or parking brake is not engaged. With vehicle in (P)PARK engage the parking brake. Release the parking brake and engage the parking brake a second time, as shown in the Setup Guide on page 16. 8 Sound mutes when vehicle is Mute While Backing Up is turned shifted into reverse. on in the rear camera setup. Change Mute While Backing Up to off. 9 Only the front speakers are on for SXM Radio. SXM Tuner has not been activated. Activate SXM Tuner. Loose or disconnected USB cable. Check the USB connection behind the headunit. iPhone or Android phone is not recognized 10 when connected to the USB cable, causing CarPlay or Android Auto to not function. Non-compatible cable. Use the cable supplied with the iPhone or Android phone and only plug into the extension provided with the head unit. Third party adapters like flush mount, OEM integration, and/or long extensions may not work. Only use USB extension that came with the head unit. Dirty charging port on phone. Clean charging port. Rear camera not 11 automatically coming on when vehicle is in reverse. The rear camera was not turned on Refer to Step 4 of the Set Up Guide on page in the setup menu. 16. Reverse wire not properly installed. If the vehicle is a manual transmission the reverse wire needs to connected to the correct wire in the passenger kick panel as shown on page 11. The wire will need to be tested and verified with a digital multimeter. 12 Rear camera just shows blank The rear camera is not outputting image with guide cones. an image. The rear camera is either not powered on properly or the video connection was not made properly. 13 Front camera image is reversed. A front camera was not used. A rear camera can not be used for the front of the vehicle. It will not display the image correctly and it will be reversed. 14 Installed an amplifier and it only gets sound on FM. The power antenna wire was used instead of the remote wire. The remote wire is what needs to be connected to the remote turn on lead of the amplifier. The microphone needs to be plugged into 15 Can't be heard when making phone calls. The microphone is not plugged into the port labeled "MIC". If it gets plugged into the correct port. the SWC port it will not function properly. Page 11 shows the correct port to plug into.

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Jeep Wrangler
i407-WRA-JK
20210811v1
±
18/18
Troubleshooting Guide Continued
Symptom
Possible Cause
Remedy
6
Headunit will not turn on.
One of the power wires does not
have proper voltage
Test the power wires with a digital multimeter
and trace from there.
4 pin Maestro data cable is
disconnected or damaged.
Check for proper connection or
disconnected pins.
OBD2 cable is not plugged in.
Connect OBD2 connector to the OBD2 port.
Main harness is not connected.
Check for proper connection or
disconnected pins.
7
Cannot enter SETTINGS
MENU.
Vehicle is in motion or parking
brake is not engaged.
With vehicle in (P)PARK engage the parking
brake. Release the parking brake and
engage the parking brake a second time, as
shown in the Setup Guide on page 16.
8
Sound mutes when vehicle is
shifted into reverse.
Mute While Backing Up is turned
on in the rear camera setup.
Change Mute While Backing Up to off.
9
Only the front speakers are on
for SXM Radio.
SXM Tuner has not been activated.
Activate SXM Tuner.
10
iPhone or Android phone is
not recognized
when connected to the
USB cable, causing CarPlay
or Android Auto to not
function.
Loose or disconnected USB cable.
Check the USB connection behind
the headunit.
Non-compatible cable.
Use the cable supplied with the
iPhone or Android phone and only plug into
the extension provided with the head unit.
Third party adapters like flush mount, OEM
integration, and/or long extensions may not
work. Only use USB extension that came
with the head unit.
Dirty charging port on phone.
Clean charging port.
11
Rear camera not
automatically coming on
when vehicle is in reverse.
The rear camera was not turned on
in the setup menu.
Refer to Step 4 of the Set Up Guide on page
16.
Reverse wire not properly installed.
If the vehicle is a manual transmission the
reverse wire needs to connected to the
correct wire in the passenger kick panel as
shown on page 11. The wire will need to be
tested and verified with a digital multimeter.
12
Rear camera just shows blank
image with guide cones.
The rear camera is not outputting
an image.
The rear camera is either not powered on
properly or the video connection was not
made properly.
13
Front camera image is
reversed.
A front camera was not used.
A rear camera can not be used for the front
of the vehicle. It will not display the image
correctly and it will be reversed.
14
Installed an amplifier and it
only gets sound on FM.
The power antenna wire was used
instead of the remote wire.
The remote wire is what needs to be
connected to the remote turn on lead of the
amplifier.
15
Can’t be heard when making
phone calls.
The microphone is not plugged into
the correct port.
The microphone needs to be plugged into
the port labeled “MIC”. If it gets plugged into
the SWC port it will not function properly.
Page 11 shows the correct port to plug into.