Question about Philips HTS3450 System

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My subwoofer power light is dimming

I have a low-connection AV cable running into the about 7 secs the light gets verry dim. Plus there isn't no sound being produced!!

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  • Melloman Jun 09, 2008

    My product is doing the same thing. The sub-woofer light is getting dim and plus there's no sound coming out.


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Short circuit, Power module can be broken. Tell me how is working without any connection, just power it.

Posted on Apr 27, 2008

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Posted on Jan 02, 2017

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2004 Deville: I am getting code B 1390 - Device Voltage Reference Input Circuit Malfunction - what do I do?

DTC B1390 -The DIM has an internal battery voltage sensor and a reference voltage. The DIM compares these two voltages via the two battery positive voltage circuits every 300 milliseconds. Do you know what the DIM is ?

Conditions for Setting the DTC
This code shall be set after 10 consecutive readings that the two battery positive voltages differ by 1 volt or greater.

Turn OFF the ignition.
Disconnect the dash integration module (DIM).
Turn ON the ignition, with the engine OFF.
Measure and record the voltage from both battery positive voltage circuits of the DIM to both ground circuits of the DIM.
Compare the two recorded DIM battery positive voltage circuit voltages.
Is the voltage difference less than the specified value?
1 V
YES - Go to Step 5
NO - Go to Step 3

Test both DIM battery positive voltage circuits for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
YES - Go to Step 7
NO - Go to Step 4
Test both DIM ground circuits for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
YES - Go to Step 7
NO - Go to Step 5
Inspect for poor connections at the harness connector of the DIM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
YES - Go to Step 7
NO - Go to Step 6

Important:: After replacement of the DIM perform the set up procedure for the DIM. Refer to Body Control Module (BCM) Programming/RPO Configuration .
Replace the DIM. Refer to Dash Integration Module Replacement .
Did you complete the replacement?
YES - Go to Step 7
Use the scan tool in order to clear the DTCs.
Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?
Go to Step 2
System OK

Do you know what there saying here ? Do you know where The DIM is located . Do you know where to find a wiring diagram so you know what your testing ?

free wiring diagrams at Enter vehicle info year , make , model ,engine . under system click on body & accessories, then under sub system click on body controls . Hit the search button a blue link will pop up . click on that .

Dash Integration Module (DIM)
The various DIM input and output circuits are described in the corresponding functional areas as indicated on the DIM electrical schematics.
The DIM functions include the following:
• Class 2 communication requiring DIM interaction.
• Control of exterior lamps.
• Control of front fog lights.
• Control of the headlights.
• Headlamps on with wiper input.
• Hood ajar switch input w/export.
• Horn relay control.
• Interior lamps incandescent dimming.
• Low side temperature for HVAC compressor.
• Power moding control over Class 2 serial data circuit.
• Reverse lockout solenoid control.
• Steering wheel controls input.
• Storage of the clock settings and, sending a message out on the class 2 serial data circuit in response to requests from other modules. Good luck !

Mar 08, 2017 | 2004 Cadillac Deville

2 Answers

Driver side headlight goes dim on high beam while passenger side is bright

bad connection or bad earth check all connection or bulb

Jan 24, 2016 | Cars & Trucks

1 Answer

Low beams go off when high beams are on

what car, what year,? what model (wrangler?) im clueless
bulbs get weak with age
the glass in bulb (looks like silver paint)
this is normal for extreme usage.
replace the bulbs if dim. both.
if the car has covers in front of bulbs (not my 02 wrangler)
but newer cars have this crappy plastic in front,
it can be cloudy, there is a nice kit that fixes it (labor) at walfart. ask.

dim lites?
1 dim bulbs
2 cloudy lenses.
3: bad wire, bad grounds and bad connectors to lamps.
4: wiring hacked by kids wanting HID bs.
5: wrong bulbs, kids again.
6: corroded fuses, (12v at lamp do you have)?
7: bad combo switch or its ground is bad.

if you have 12volts across the dim lamp, you can skip 3 to 7 fails.

see your FSM for how they work. and wiring.
does your car have DRL? daylight running light option or in CANADA?
that be more heart ache.
and my jeep the highs and lows are never on at the same time.
the combo switch selects one or the other.
what it does in flash mode, not sure. need car year. and name.

Dec 16, 2013 | Jeep Cars & Trucks

2 Answers

Interior lights and exterior lights are dim, along with heater fan running slow, when first starting car. After a few seconds, lights brighten and fan speeds up. What is it?

For some reason the alternator output is very low when the lights are dim. Something happens to bring output up to normal when they get bright.
Slipping belt, or an electrical problem.

Jan 27, 2013 | 1996 Pontiac Grand Am

3 Answers

Trouble shoot a 2007 honda crv starter

Take the starter off for testing. If the lights were normally bright, and went dim when key was in cranking position, it means the start circuit is working-battery power is going to the starter, but it won't do anything. The starter motor is probably bad.
Good luck.

Jul 14, 2012 | 2007 Honda CR-V

1 Answer

When i turn on my headlights the left side gets dim and the running lights all go dim but the right head light and running light are bright. the dash lights also goes out on just the head light setting. If...

it sounds like you have a bad connection on the left headlight either the earth or the power wire,check the connector on the headlight bulb plus all the other wiring & connector plugs.....hope this helps.....cheers.

Jul 01, 2011 | 1993 Subaru Loyale

2 Answers

1990 buick no start turn key dash lights go out and all is dead

When you say "turn key dash lights go out and all is dead", do the lights come back on when you turn the key back to "off"?
With key off, try turning on your headlights- are they bright?
Flip to high beams-do they get brighter?
**If lights get dim while trying this, it's the battery-(dead/needs charged or replaced-which may have been caused by a bad alternator).
Leave lights on, now turn your ignition switch to "on"-do the lights get dim or go out?
Try and start the car-anything change?
If the lights were fine until you tried to start the car, more than likely your battery terminals need cleaning/tightening.
The lights should at least get dim when you try and start the car but only while the starter turns over: when the engine is running your lights (as well as all your other electrics) are powered by the alternator.
If you do all this and lights are okay all through this procedure, your problem is probably in your starter circuit. (Starter relay, ignition/key switch)

Hope this helps.

Dec 16, 2009 | 1990 Buick Riviera

1 Answer

LED lights dim on HT720

Check the subwoofer for a blown fuse. I hope this helps. ~ Bruce :)

Aug 31, 2009 | Audio Players & Recorders

2 Answers


If the light on the amp is dimming when the bass hits it's usually a power related problem. It sounds to be that you don't have enough power going to the amp to drive the sub. It should stop if you reduce the volume at which you are playing the music. Yes?
How to solve this is to, increase the size of your power cables, add a power capacitor if needed & change the car battery to a higher capacity one.
The other option a little more professional, would be to fit a split charge system & a secondary battery to the boot/trunk of your car just to run your stereo system, with a power capacitor too. This will provide all the juice that your system requires so you can bang your head as long as you want :P

Sep 24, 2007 | Car Audio & Video

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