Radio issue with Infinity system

You have the wrong radio, but there is more to the story. Your original model has a 100 percent failure rate, but that failure will never show up until right after a disconnected battery is reconnected. When any other repair or service requires the battery to be disconnected, the mechanic always gets the undeserved blame, but the failure could have occurred years ago.

The model you bought is a direct replacement built by Mitsubishi. You will notice it weighs three times as much as the old one. Everything is identical except it has one extra switch on the front panel.

Both of these radios were not used with the remote amp(s) in the Infinity systems. If you have amplifiers bolted to your speakers, you should still be getting sound through the unamplified tweeters. Another version uses a single amplifier for all the speakers. Those will not produce any sound if the amp does not get its turn-on signal.

A lot of models are missing the terminal in the connector for the turn-on signal. Minivans never had power antennas, which use that same terminal to tell it when to go up, and those with the base audio system did not have amps, so the radio did not need that turn-on circuit.

Look at the black plug, for a wire at the far end away from the key way. Most commonly that will be a dark green/red wire. If that wire is missing, you do not have the Infinity system. Assuming that wire is there, look for a mating terminal in the radio's black connector. If that last terminal is not there, that radio will not run a power antenna or remote amplifier. Let me know what you find. There are a couple of ways to solve that.

The existing radio is reinstalled so I cannot see the plugs at the moment, but the front door speakers were labeled “Infinity” (badges are long gone), and the van was ordered with the Infinity system.

The new unit does have all 8 pins on both output connectors in the rear.

Okay, next, check if twelve volts shows up on that dark green/red wire. It should be there when the ignition switch and the radio are turned on. If it does not show up there is likely a broken solder connection on the relay inside the radio. You will still have sound with that radio when used in a vehicle without an amplifier.

A way to bypass that problem is to splice in a jumper wire from the dark green/red wire to the switched twelve volt power wire. That is the red or the red/white wire, second from the end in the gray plug. That is from the end opposite the key way. Adding that wire will make the amps turn on when just the ignition switch is on. It will be on even when the radio is off.

Thank you for your help.

I plugged in the new unit and it had power on the ant/amp pin.

Oddly, when I reconnected the new unit it worked fine - all functions. I'm usually pretty good about making sure all connections are solid, so not sure why it didn't work the first time. All good (for now).

Thanks again!

All right! One in a row! Happy to hear it's working.