13

If you can access the electronics soon after they get wet, the chances are pretty good to keep it working. Unfortunately, after all this time, it's kind of a long shot. There are three major things that happen when you get a circuit board wet: The battery voltage can short across to the wrong parts of the circuit. This will cause it to fail, but seldom ...


12

Don't go with that model for automotive use. It passes through the "12v" input directly to the motherboard and drives, meaning you'll be delivering ~14v with the engine running, and all sorts of ugly voltages during cranking, near-stall, etc. situations. I would highly recommend this more expensive model: http://www.mini-box.com/M3-ATX-DC-DC-ATX-Automotive-...


12

In my car the indicators are controlled with solid state electronics and so could switch silently as there is no relay or bi-metallic strip contactor to make a noise as they are activated. There is however a clicking sound that is produced from the vehicle speakers to provide an audio feedback that the indicators have been activated both to give confidence ...


9

When properly installing an amplifier a large gauge wire is run from the battery to trunk area. A fuse is installed as close to the battery as possible. The amplifier then connects to that wire. If multiple devices need to connect use a fused distribution block. Don't forget to run a remote wire from your head unit to the amplifier to turn it on and off ...


8

I can think of several reasons straight away: Cheap Easy to replace Have a very distinctive click that makes it obvious when they are on, and when a bulb has failed Are very well understood Anyone can fit one without needing to understand much about electronics


7

If the car is drive by wire it doesn't mean everything There are some cars that are drive by wire where it's the accelerator only. Brake by Wire If it's an electronic brake system the term EBS or electronic braking system may be thrown around. As the article states EBS systems are typically found on commercial vehicles. True brake by wire systems are in ...


7

ANSWER: Pretty unstable. Connect a voltmeter to your ciggy lighter socket, and watch it while starting and running the car. It will be ~12.5V when the motor is off, up to 14.5V while just started, and once the battery is topped off by the alternator the voltage will drop to around 12.5-13.0V for warm running. Also try turning your high beams and AC on to ...


7

Most everything external of the ECU is going to be 12vdc (+/-2v). (NOTE: As @juhist points out, more and more cars are supporting 5vdc output to charge handheld devices through USB ports. 5vdc may already be available, but without knowing the specific car, there's be no way for us to help you with this.) The voltage doesn't spike unless there's unusual ...


7

This behavior is by design and it was the same on pretty much any Ford of that era (at least it was on the Mondeo, Fiesta, Fusion and Focus IME) You can modify it to come on with the ignition but not without a little bit of re-wiring so it depends on how comfy you are with some basic electrical work. Essentially you need to wire a relay into the the 12V ...


6

There is a distinction that needs to be made between: OBD: this is an interface, that specifies the physical and electrical parameters required to connect a diagnostic computer and the car's electronics in a standard way. This is the bit that is mandatory by legal requirement, so that a car manufacturer cannot "lock in" its vehicles by requiring service to ...


6

I accidentally ran the smart key for my '09 Jaguar XF supercharged sedan through the washing machine once. It was submerged in water for about 10 minutes until I found it. I was able to fix it by opening the shell and removing all the contents. A ran a blow dryer over all the pieces until they were completely dry (at least they appeared to be) before putting ...


6

Dodge installed VNT Turbochargers on cars in 89 and 90. The most well known of which is the 1989 Shelby CSX-VNT. The vanes were controlled by a dual port vacuum actuator. There was nothing electronic on the turbo itself, but there were vacuum solenoids (for boost control) on the lines going to the actuator. The VNT Turbo has movable vanes on the exhaust ...


6

You cannot easily "tap" into any ECU/PCM. Depending on what year your vehicle is, it could be a simple set of analog gauges which you could tap into the signal line, but you'll need to do some hardware design to convert the signals to usable data. If it's a newer vehicle, you'll have to deal with the canbus protocol and that will be very difficult. Your ...


5

Generally manufacturers aren't going to waste money on unnecessary components. You've got electrical components to: provide spark to the engine. an on/ off / kill switch to control engine on or off. power the fuel pump (on a modern fuel injected bike). power to the engine control computer, and its sensors and subsequently the fuel injectors (on a modern ...


5

If your car has a OBD2/ODBII port then it is achievable. I'd imaging the simplest way would be to use a ELM327 type cable or even a bluetooth adapter to provide the interface between the pi and the car.


5

In the old days, the flasher used to be controlled by a little device that contained a bimetallic strip. When current was supplied to the flasher lamps, the strip would heat up, bend and turn off the lamps. The bimetallic strip would then cool down and reconnect the power. This process repeated creating the flashing lamps. The bimetallic strip switching ...


4

I would go with the more expensive one in this case. Typical output of a "good" system is in the neighborhood of 13.1vdc. Depending on the alternator and how much it needs to put out to recharge the battery, it could be upwards of 14vdc (or maybe a touch higher). The power output from the 12v outlet source is going to reflect what the alternator is putting ...


4

The voltage available on the "Accessory" circuits on some modern (last 10 years, at least) can be pretty stable at 12-12.5V. Ignition circuits, not so much (9-14V). To be safe, however, you should measure with a fast acting (ie, analog) voltmeter on the cigarette lighter in the following conditions: Key on, engine off Key on, engine cranking (likely it's ...


4

There are several things you can look for: Complete paths Electricity requires a complete path from positive to negative. In a car with that kind of age, I would be checking that you don't have bad grounds or corroded connections. Especially where the ground straps connect between the body and engine block. Slice and dice the problem First thing to ...


4

No car has every attribute to be fully autonomous out of the box. Brakes: If a vehicle is equipped with dynamic stability control then software control of the brakes is possible. Dynamic stability control incorporates all the needed pieces to operate the brakes without driver input. The base software will not incorporate software brake control and will ...


4

If you're talking about a regular 12V battery vehicle, then the ECU is likely to work from 7V until 14V with no problem. That's the usual requirement for this kind of component.


4

If the car has electronic components, like ECUs, central commanding modules, etc, doing that "may" fry them...or not. Sometimes the ECU turns off the engine if the battery is non present. Same reason the makers discourages checking spark against the engine metals. I had a Daewoo Nexia some years ago, and it didn't liked that, no matter how much I revved it ...


4

Automotive cables are normed (ISO 6722 ?). The insulation of automotive cables offer a superior resistance to heat, cold, chemicals and vibration. A common FLYR-cable should guarantee its insulation for a temperature range from -40°C to 105°C. Nobody will give you the same guarantee for a common household flex cable


4

Troubleshooting: Pull out the rubber seal between the indicator stalk and the housing for the steering column and stalks. If this fixes the problem that means that the rubber is pulling down the indicator stalk when indicating right, and when the click from the latching mechanism vibrates the stalk it wiggles loose. The fix for this is to bend the arm of ...


4

Three major reasons why they were used so long: 1. Cost - Even today a thermal flasher units cost about $2-2.50. The cheapest equivalent electronic flasher unit, which happens to be a direct replacement, costs about $6.50 (NOTE: Prices shown are USD found through a quick internet search). 2. Simplicity - They work until they don't. 3. Longevity - I can ...


3

Pulse Width Modulation (PWM) can easily be achieved with two wires. All PWM does is hold one wire constant and rapidly pulse the other between 1k and 10k times a second. By changing the relation ship of how long the pulse is on versus how long the pulse is off the duty cycle is changed. Both the wires from the pressure control solenoid go to the PCM. The ...


3

There isn't a mechanical relay it's all controlled by the Guard Lock and Alarm module. Gain access to the module and test for power on pins A26 (green/red) B1 (red) and B8 (white). Test for ground on pin A1 (black) If you don't have power on those pins check fuses 7 & 8 in the under dash fuse box. And fuse 9 in the engine compartment fuse box. If you ...


3

For what it's worth, there is a way to access the instantaneous fuel flow rate inside the secret menu on this model. I know this is not exactly what you're after but this parameter has a very fast refresh rate, and to obtain the l/100 km reading it you simply have to divide the value by vehicle speed and adjust for units if needed. With the key in the "off" ...


3

Looking at the reset procedure for the SAS (Steering Angle Sensor) on Ross Tech VCDS wiki here it would appear that within this software measuring blocks 08 groups 007 is returning real-time steering angle data in degrees. Where this data is located other than that I'm afraid I don't know. The part number for the SAS on VAG cars appears to be 1J0-959-654-J ...


3

When you first turn your vehicle on, the vehicle itself does a "Power On Self Test" or POST. When you turn your key from off to the run position (before you start it up), all of the dash lights which are usable will light up. You should get used to which ones light up and keep those in the back of your memory. If a bulb should go out, you'll notice the ...


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