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What all did you disconnect ? Did you disconnect any connectors to the BCM - body control module ? All the thing's your having troubles with are controlled by the BCM . The wiper switch is an input to the BCM , the BCM controls the wipers by energizing two different relays . wiper on relay & wiper high low relay .
Since horn didn't work, tried to take off dash ???? Why ? didn't need to do that . Do you know what a relay is ? Horn relay is located in the under hood fuse / relay box . You could have tested right at the relay base - where it plugs in .
VEHICLE RELAYS Operation Diagnosis
check voltage to battery with vehicle running it should be 14.25 volts .minimum 13.25volts. if voltage is not enough then voltage regulator ,and, or alternator is bad. make sure belt is not loose.
Just because the lights go on does not always mean that the battery has enough power to engage the starter. The clicking noise could be the voltage regulator clicking. And since you disconnected the battery maybe there is not a great connection at the terminals. Were the terminals cleaned before the battery was reconnected?
Curious ... what was the cause of the check engine light going on?
If I were you sir I would check the fuel pump if you're adamant that hey I'm getting plenty of spark check your fuel rail pressure first check you feel pressure make sure you getting out of the fuel pressure and go
Do you know anything diagnostic's ? Using a more advanced scan tool to look at sensor data ? How to test automotive electrical testing ? Not just replacing part's . Learning how to diagnose , using tool's to test fuel pump pressure , pulling a spark plug to check for spark . Sounds like you should have a qualified repair shop diagnose the problem ,if you haven't all ready .
048 Engine Hard to Start or No Start Scan Data for Starting Problems064 Emission Tests Scan Data Pre Check
Testing ,not guessing is the way to a fix.
Any misfiring while its running? Codes? I did have a dodge once that did this and sometimes wouldnt start back up for an hour or so. After throwing lots of $$$ at it turns out map sensor. Good luck.
If the right signal is working ok the flasher unit is ok, as it works both sides , so the fault is blown bulbs, faulty connections or faulty indicator switch. There are one unit for indicators one one for hazard lights
I am only guessing but it seems to me an ECU that can't remember anything is probably faulty.
Inside the ECU or ECM, the brain, the computer can be divided into sections like the circuit board of a radio or a laptop. There will be voltage regulators, an obd interface, a memory for the fault codes and a memory for recent history and a memory for the learned settings. There will be a memory for the preprogrammed settings and drivers for the ignition and injection system and an active computer making sense of the sensor information in order to make constant adjustments.
Just as with most things built on a single circuit board they rarely fail en masse. Usually what happens is just one of the on-board systems fail even though the result for practical purposes is the same as if the whole thing frazzled.
Usually When an ECU fails it is one of the essential functions which leaves no doubt it must be replaced but it isn't inconceivable that any section could fail - even one or more of the memory sections...
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