2001 Chrysler 300 Infinity amp replacement

If you have the am / fm / cassette or the am / fm / cd with htree tone controls with yellow leds, suspect a radio failure. Find the model number on the radio and I'll tell you the fix.

Those combo radios are mostly built by Mitsubishi and are very high quality. It is one model I sell a lot of to replace the Chrysler-built cassette-only and cd-only radios. While there could be a problem in the radio, it's more likely to be an amp problem or a power supply problem. I have some amps but they are from older models and will likely be different. Look at the plugs on your amp. It's on the left side in the trunk. There should be a 12-pin plug and a 22-pin plug. In the 22-pin plug, look for pin 1, red / white wire, and pin 12, a red wire. Both of those should have full battery voltage all the time. They are across from each other on one end of the plug. Next, check for 12 volts on pin 3, a dark green / red wire. That one should have battery voltage only when the radio and ignition switches are turned on. Check pins 2 and 13, black / light green, also right across from each other, to be sure there is no voltage on them. If there is, the ground wires have a break. If the voltages are okay, suspect the amp. Chrysler amps rarely fail, but I did have one go out on my '93 Dynasty at 4,000 miles, (two years ago).

Nope. I never got involved with sales codes, just model numbers. That's what I use to order service manuals.

I only have a 2000 service manual but I think the circuitry is the same. Check fuse # 18, a 20 amp yellow fuse inside the car. Fuses # 4 and # 19, both red 10 amps, are for the radio. They should be good if the radio is working.

Then there's only three possibilities. There might be another fuse under the hood that is blown but I would expect there would be other things that wouldn't be working. Two, there is a break in the wire going to the amp, or three, you did something incorrectly when measuring for those voltages. I'm inclined to think the third reason is it because if you measured with the ignition switch and the radio turned on, you should have 12 volts on three different wires. Two get their power from the amplifier fuse and a different one gets its power from the radio when it is turned on. That third one from the radio is the turn-on signal for the amp. To lose voltage on both circuits at the same time would be very unusual unless a mouse or some other damage to the wiring harness was involved. Double-check where you had your voltmeter or test light grounded to be sure it makes a good contact and isn't insulated by paint or rust.

That would leave the radio power wire which is the turn-on signal for the amp. It will be a dark green wire with a red stripe. Some radios use an internal relay to switch that circuit on and off. Those relays can develop broken solder connections. To prove it, if you do find the other two wires have 12 volts, you can use a piece of wire to jump from one of them to the dark green / red wire to turn the amp on. If the radio plays fine then and all other functions work, I can describe a wiring modification that will turn the amp on and off with the ignition switch only, regardless if the radio is on or off. The amp will still turn off so it won't drain the battery.

The trim bezel snaps on and off. If you can't pull it off by hand, use a wood or plastic stick to pry it off. There will be electrical connectors that might have to be unplugged to get the bezel out of the way. Four philips screws hold the radio in, one in each corner. When you slide it out, there will be a sticker on top with the model number and supplier number. Most likely your supplier number will be "28046". That is for Mitsubishi. They make most of the cd / cassette combo radios and are very high quality. If you tell me the model number, I can repair yours, sell you a different one, or tell you which other models will work in place of that one.

Ahahh! This is not a cd / cassette combo radio. That model is a cassette-only radio. I could have saved a whole lot of time if I knew that. Here is a copy of the reply I use a lot: There is one model of cassette player and one model of cd player, both built by Chrysler that have microprocessors built by North American Philips, (NAP), the same people who build the really crappy Magnavox and Sylvania tvs that I worked on for 35 years! These microprocessors have a 100 percent failure rate. I have the equipment to replace them, but then the software must be burned in. They will never sell me the equipment to do that. These radios have three tone controls with yellow leds. The cassette player is model number 56038518. All I can remember of the cd player is the model number ends in a "67".

There is a long list of common problems, but the most common ones are the yellow leds flash on and off with a thumping sound in the speakers, and no display, or, the radio goes dead momentarily when moving the volume or tone controls. Some appear to work but have no sound. It is not cost effective to send these radios in for repair, but there are other models made by Mitsubishi for Chrysler cars that are very reliable. There's a direct replacement for the cassette player that looks exactly the same, has the same three lighted tone controls, and will run the same remote cd changer if you have one. The only noticeable difference is it has one extra button for "Scan". These sell for more than 70 bucks on eBay because used car dealers all over the country are looking for them for their used cars.

If you have the Chrysler-built cd player, I'd recommend upgrading to a cd / cassette combo. These are also built by Mitsubishi and give very little trouble. There are cd-only units but most of them are built by Alpine. Alpine is the only company that will not allow the authorized service centers to sell me parts or service manuals. I can still fix them, but I don't promote products for companies that pull this selfish nonsense.

If you snap the trim cover off that covers the radio, you will see four screws that hold the radio in. Remove them and pull the radio out just enough to read the model number on top. You can also tell who built it by looking at the "Supplier Number".

07910 is Chrysler
28046 is Mitsubishi
26777 is Alpine

Yippee. Happy to hear you found the Mitsubishi model.