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#Amp steps not working after dead battery how to
#Amp steps not working after dead battery full

I don't have a diagram, but you should be able to see if the is continuity through the switch by attaching a multimeter to the terminals on each of the settings. If you pull the switch out, you should be able to test it. Since it's not blowing, you have to consider the switch as a possible problem.

#Amp steps not working after dead battery full

Since it doesn't have a resistor associated with the last fan position, the fan should run at full blast on that one if there is power getting to it. When you get to the last setting, the last connection is full power, which causes the fan to run at high speed.

This causes the fan to run at the lower speeds. A resistor pack works by having resistors which lower the amount of power to the fan. Not because you inspected it, but because of how the resistor pack works. I don't see a real reason for it doing it during a battery change, though (doesn't make sense, but sometimes you have to look at what seems right). What steps would you take to diagnose this problem?

#Amp steps not working after dead battery how to

The above makes me suspect a bad ground, but I'm just now learning how to diagnose electrical problems! I'm a complete novice at maintaining my own vehicle but am eager to learn, especially since I'm now out of warranty :) When I started the car again later it worked again.

When I went for a drive earlier today, the windows would roll down but the automatic rolldown function (when pressing fully on the button) wouldn't work.

I have a custom stereo system with a 600W amp connected to the battery which has worked fine for a few years now.

Could this indicate a bad ground somewhere else in the wiring?

When I connected the new battery, the negative terminal arced upon connection.

It appears OK but I'm not sure how to actually test it with my multimeter, or if I should even try at this point.

Visually inspected the blower's resistor pack which is located under the passenger glove box.

Disconnected the battery for about an hour and reconnected it (I read something online about allowing the system to reset, probably hogwash).

Checked every single fuse (under the hood and under the dash) both visually and with a non-powered fuse checker.

All the normal AC lights come on on the dash, and I can hear the engine revs changing when the compressor kicks in, but no air comes from the vents at any of the 4 fan settings. After the car wouldn't start (starter would crank but engine would not turn on) I decided it's probably time to replace the battery, and did.Ĭar starts fine, but now the AC blower won't turn on at any setting.