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I have a Dynex 42E250A12. From online help I think I have a bad Power Supply. I don't have a diagram showing the output voltages. How can I determine if the power supply is what is bad.

I'm pretty good with a meter.

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SOURCE: wiring diagram

Do you still need help with this?

Posted on Aug 31, 2008

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bunnydawg
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SOURCE: wiring diagram fort radio dodge caravan

if you have the connector and are trying to determine which is which... use a multimeter to test for voltage. the memory wire will have power to it regardless if the key is on or not.

Robert

Posted on Sep 07, 2008

  • 3 Answers

SOURCE: need to bypass ignition switch

further diagnosis showed that the ingnition switch was fine it turned out to be a faulty 02 sensor that was making the engine run extremely rich, ruining the spark plugs.

Posted on Feb 06, 2009

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SOURCE: electric fuel pump wiring harness diagram

Your best bet is to type it in to autozone.com and got to the repair section. it will tell you there.

Posted on Apr 23, 2009

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SOURCE: no power supply is reached the aircon compressor.

you first need to check up the pressure of gas inside the pipe test then replace the sensor you do that and the power will come

Posted on May 24, 2010

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which engine, no engine, no joy. 4.0L inline 6 cyl?

yes, in most cases. most got from 0.5 to 4v.
most ECU learn this as you drive, others the TPS must be calibrated
all this is covered in the FSM>
my online source shows , NO Calibration, proving Autocal ECU.

why not post symptoms, ????
the TPS when bad, have huge lists of symptoms.
and the ECU OBD2 diagnosics on TPS is very poor.
it see the TP go wild and just thinks driver is nuts.
so no errors.just engine goes nuts.
(unless dead open or shorted) (new TBW cars ,totally diffr)
what first happens (pure physics) is the carbon in the POT
wears. and the TP voltage glitches (at your oldest longest used cruise speed, or at near idle (city car, hiway car ?)
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how is that.? (it does far more, ask)

here is the fsm quote for 4L
The Throttle Position Sensor, or TPS is connected to the throttle shaft on the throttle body. It sends throttle valve angle information to the PCM. The PCM uses this information to determine fuel delivery volume.
The TPS is a potentiometer with one end connected to 5 volts from the PCM and the other to ground. A third wire is connected to the PCM to measure the voltage from the TPS.
As the throttle valve angle is changed (accelerator pedal moved), the output of the TPS also changes. At a closed throttle position, the output of the TPS is low (approximately .5 volts). As the throttle valve opens, the output increases so that, at wide-open throttle, the output voltage should be above 3.9 volts.
By monitoring the output voltage from the TPS, the PCM can determine fuel delivery based on throttle valve angle (driver demand).
(comments, by me, id does far more than that.. ask)

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see this steps and fix it. God bless you
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A tool such as an Ignition System Simulator can speed the diagnosis by quickly telling you if the ignition module and coil are capable of producing a spark with a simulated timing input signal. If the simulated signal generates a spark, the problem is a bad distributor pickup or crankshaft position sensor. No spark would point to a bad module or coil. Measuring ignition coil primary and secondary resistance can rule out that component as the culprit.
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Model Year is always good to know, just to help determine age of the vehicle.

If this bike has sat all winter, you may need to clean connections at the fuse box or where they are exposed. The loss of a ground connection is just as bad as losing the + connection. It takes both to complete the circuit. Grease on clean exposed connections seals them somewhat.

Make sure you have a fully charged battery. Modern electronics require minimum voltage amounts or won't function.

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Wiring diagram fort radio dodge caravan


if you have the connector and are trying to determine which is which... use a multimeter to test for voltage. the memory wire will have power to it regardless if the key is on or not.

Robert

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