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Repair energizer EN2000 inverter.

Does not power up.

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Cooling fan switch ? The cooling fans on your vehicle are computer controlled . Relay's energized by PCM - engine computer . Coolant temp sensor is a input to the PCM ,when the temp. reaches 212 degress the PCM will energize the low speed fan relay ,if temp reaches 250 degress the PCM will energize the high speed cooling fan relay . Hooking up a scan tool an checking coolant temp. sensor data to the PCM and checking control from the PCM ( energizings relay's ) Is how to diagnose this . Not replacing parts and hope you fix the problem . Your best bet take it to a qualified repair shop.

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If it's a square 5 pin relay the terminals are marked, 85 and 86 are the coil when you put power and ground to the terminals the coil will energize and the relay will click, it dosnt matter what terminal gets power and what one gets ground. With no power on the coil- not energized pins 30 and 87a are hooked together, when you energize the coil and it clicks pin 30 and 87 are hooked together.

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Door Lock System Components
The power door lock system consists of the following components:
?€¢
The driver door switch (DDS)


?€¢
The passenger door switch (PDS)


?€¢
The body control module (BCM)


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The driver information center (DIC)


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The rear door lock/unlock relay (LBEC)


?€¢
The door lock actuators in each of the doors The rear passenger doors are controlled by the BCM through the rear door lock/unlock relay which is incorporated onto the printed circuit board in the LH BEC. The BCM controls the unlock relay by providing ground to energize the coil and controls the lock relay by providing battery voltage to energize the relay coil. The energized the relay and allows voltage to be applied to either the door lock motor lock or unlock circuits. Since the other side of the door lock actuator is connected to the normally closed contacts of the opposing relay to ground, the doors lock or unlock.
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Wipers will not come on 1985 corvette


Most systems work like this, in any vehicle. You have a switch to turn it on. You have a relay that is energized by the switch. The relay supplies power to the windshield wiper motor when energized. So to troubleshoot you check to see if there is power in the motor terminals . No power there, check the relay to see if it has been energized. If there is power to the relay, no power to the motor, you have a bad relay. If the relay is not receiving power to the coil, then check your switch. You need a voltmeter, Radio Shack has them for very little money.
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1 Answer

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Your jeep is suffering from what is called the "delayed check engine light problem". Your main computer ecu is in need of repair. Some internal components, ones that normally send power to energize the various engine relays, have gone bad from age. Have the ecu repaired. That services is offered on ebay.

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If you can get your hands on an inductive type ammeter you can also check on the current draw of the starter. Testing a starter on a bench when its free and not turning a motor does not much good.
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1.) You have a Bad LCD Bulb.. You can get a replacement LCD Bulb and change the LCD Bulb inside the Display which is cheaper and easier than replacing the whole backlight panel.... LCD bulbs cost around $12 Be careful these bulbs are Fragile and if bent when installing- will break...

2.) You have a failing Power Inverter... this is located just under the screen display panel,, it is a circuit board that the screens lcd bulb plugs into and the display cable plugs into... this inverter board converts the DC power in the laptop back to AC power because the screen needs more power to power the lcd bulb...

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