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Pre out volts - Kenwood KDC-MP342U Car CD Player

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Vauxhall Vivaro 2006 , problem with stereo , wont switch on when i turn ignition on , but will switch on if on/off button pressed. i suspect the 12v switched ignition wire .

12 volt constant wire for the memory must be working
should keep the clock working and pre sets

12 volt wire from ignition acc is not giving 12 volts to radio

may have an inline fuse or check radio fuse
internal fuse cover has a legend

using on /off buttons might mean
resetting stations and stuff every time you want to drive


Oct 27, 2016 | Vauxhall Cars & Trucks

1 Answer

What power source to be used id I am using AIWA PX-E55 as a stand alone unit?

You could probably run it off a large 9 volt battery, as long it doesn't run off a 6 volt supply. How much control of the speed depends on if the deck has inbuilt speed pre-sets to adjust it. In fact that is crucial for any power source that you use. As it will either be too high or low to run the turntable at the correct speed. So if there are no pre-sets on it you will have build that in to the power supply. It all depends on if the original power supply in the unit it was attached to had it controlled from there.
I would have a look at the motor in the deck, it might tell you what it runs on.
Once you find the voltage the motor runs off, you can narrow a suitable power supply down. For example if it ran off a 12 volt supply, you could use a model train set transformer. As basically the motor is nearly the same as train set motor! But must run off about 9 volts that I have seen.

May 03, 2016 | Aiwa Audio Players & Recorders

1 Answer

I have a ken wood kr-797 stereo receiver but I can get sound but it's very low and I have to have the volume set at 0db in order to hear anything. It's like this on all inputs

I suspect that the pre-amp stage in you amp has failed. What you are hearing is the power amp on full volume. But with no pre-amp to boost the signal it's to low.
What we do know is that the sound is going into the pre-amp and out for you to hear it. This could mean that the power to the pre-amp stage is low, but still present.
Pre-amps these days mostly consist of a single IC. That could have failed, or it is not getting power. Since it would be possible to test the voltages to the IC, one pin should have something on it to the region of 6 to say 20 volts going into it. If the IC has that going to it, it has failed. If the voltages to all the pins are low, then you have a power problem.

Aug 27, 2015 | Audio Players & Recorders

1 Answer

The code was p0160 what does it mean.

This code is for a post-catalyst oxygen sensor that isn't operating properly or not at all. The catalyst, or catalytic converter is used to control emissions. This particular o2 sensor on Bank 2, position 2 is after the converter on bank 2 and monitors the catalyst efficiency of the catalytic converter on that bank. The P.C.M (Power train Control Module) compares the post-cat o2 sensor to the pre-cat o2 sensors to measure the cat's efficiency. The o2 sensor is a four wire sensor. The P.C.M supplies a reference voltage to the sensor of about half a volt and also supplies a sensor ground. 12 volts are supplied for the heater element and also a ground for the heater element (the heater in the sensor helps the sensor to warm up faster which allows the engine to reach closed loop sooner). The sensor varies the reference voltage the P.C.M gives it based on oxygen content of the exhaust. The change in oxygen content causes resistance changes in the sensor which affects the 0.5 volt reference voltage. Oxygen sensors are capable of varying the supplied voltage between 0.1 volts to 0.9 volts. Lean exhaust produces low voltage and causes the supplied 0.5 volts to drop. Rich exhaust produces high voltage and causes the supplied 0.5 voltage to increase. Pre-catalyst (front) o2 sensors switch between low and high voltage rapidly one or two times per second. However this sensor is a post-cat o2 sensor and may switch much slower & not vary as much (this is normal). If the sensor "sticks" or there are too few switches in a given time period, P0160 may set.

May 22, 2013 | 2004 Hyundai Santa Fe

1 Answer

2001 f 350 12 volt power trailer wire

What is it that you need to know? are you trying to run a wire to rear for 12 volts, or are you looking for the wire pre installed.

Nov 09, 2012 | Cars & Trucks

1 Answer

PO326 code

DTC P0326 - Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor) High Voltage ( click HERE )
Knock sensors are used to detect engine pre-detonation (engine knock or ping). The knock sensor (KS) is usually a two wire sensor. A 5 volt reference is supplied to the sensor and there is a signal return from the knock sensor to the PCM (powertrain control module). The sensor signal wire informs the PCM when a knock occurs and in what degree of severity. The PCM will ****** the spark timing to avoid pre-detonation. Most PCMs have the ability to learn spark knock trends in the engine during normal operation.

If the PCM determines that the knock is out of the ordinary or that the noise level is abnormally high, P0326 may set. If the PCM senses that the knock is severe and cannot be eliminated by retarding the spark timing, P0326 may set. Keep in mind that knock sensors cannot distinguish between a knock from pre-detonation or one from engine problems.

If an engine knock can be heard, fix the source of the mechanical problem first then retest. Make sure the proper octane of fuel was used in the engine. Using lower octane fuel than what is specified can cause a ping or pre-detonation and may cause P0326.
Unplug the knock sensor and check for water or corrosion in the connector. If the knock sensor has a seal, verify there is no coolant from the engine block fouling the sensor. Repair as necessary.
Turn ignition to run position with engine off. Ensure that 5 Volts are present at the KS connector. If there is, check for proper resistance between KS terminal and engine ground. You will need a vehicle specification for this. If resistance is out of specification, replace the knock sensor. If resistance is normal, plug KS back in and idle the engine. Using a scan tool in datastream, observe KS value. Does it indicate a knock is present at idle? If so, replace the knock sensor. If the knock sensor shows no knock at idle, then tap on the engine block while observing the knock signal. If it doesn't show a signal that corresponds with the taps, replace the knock sensor. If it does, verify the knock sensor wiring isn't routed next to ignition wires. If there was no 5 volts present at the knock sensor connector while unplugged with KOEO (Key on engine off) then go back to the PCM connector. Turn ignition off and clip the knock sensor 5 volt reference wire in a location that is easy to repair (Or remove the wire from the PCM connector). With KOEO, check for 5 volts on the PCM side of the clipped wire. If 5 volts isn't present, suspect a bad PCM. If 5 volts IS present, repair short in 5 volt reference circuit.
Since the reference circuit is a shared circuit, you will need to check all engine sensors that are fed a 5 volt reference. Unplug each sensor one at a time until the reference voltage returns. When it returns the last sensor you plugged in is the shorted sensor. If no sensors are shorted, check the wiring harness for short to voltage on reference circuit.
Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Feb 21, 2012 | Saturn Ion Cars & Trucks

1 Answer

Pre amp to amp

Pre-amps don't put out 750 watts. They put out about 1 volt at several thousandths of a watt. I think you are calling a 750 watt amplifier a pre-amp, and that ****** will definitely fry things.

Jul 23, 2008 | Audio Players & Recorders

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