![toyota diagnostic port test instrument panel light toyota diagnostic port test instrument panel light](https://editorials.autotrader.ca/media/129716/obdii-module-cellcontrol.jpg)
The good news is the cable is universal and is easily replaced. A pin that’s bent won’t make contact with the vehicle’s port. Checking the scanner plugĬheck the scanner plug carefully, the pins should be straight and aligned correctly.
![toyota diagnostic port test instrument panel light toyota diagnostic port test instrument panel light](https://sc02.alicdn.com/kf/H93c261ad55da45da9bba0c7469416864u.jpg)
What’s more likely is a damaged or worn-out scanner cable. Scanner damage is last on the list because I’ve been using them for years and they are surprisingly durable, I have yet to break one. Look at the terminals and see if terminals 4 and 16 appear larger than any of the others. To check OBD for damage to this type of issue we’ll perform two checks.įirst, we’ll check the port, examine the port terminals closely using a light. And that makes sense, more OBD port use over time causes the delicate terminals to wear or more commonly, lose tension.Ī DLC power terminal that doesn’t make solid contact with the tool won’t power it. When the fuse checks out Okay, the next most likely cause of no power is a damaged OBD socket. The common fuse size is 15-20 amp but use the size recommended by the manufacturer. They are often not, fitting a fuse that’s rated below spec will cause the fuse to blow again.įitting a fuse that’s larger than spec could damage components or at the worst start an electrical fire. Holding the fuse to the light reveals the strip, if it’s broken, replace the fuse.Ĭheck the rated fuse in the driver’s manual, never assume the removed fuse size is the correct size. Hook the tool over the fuse body and pull. A handy tool is often clipped to the rear of the fuse box cover. Most fuse boxes will use a blade-type fuse which is easily removed, however, they’re small and awkward to grip. Remove the fuse and check the conductive strip.
![toyota diagnostic port test instrument panel light toyota diagnostic port test instrument panel light](https://www.toyotaguru.us/engine-control-systems/images/1846_768_636-2002-toyota-4runner-dlc-terminal.png)
There are three common ways to check fuses: If that is the case, five minutes from now your tool will be juiced up and you’ll be back in business. The most common cause of the lack of power at the socket is as you know a blown fuse and I’ll bet it will be the same for you. When the check engine light is missing too, you can bet you found the reason your scan tool won’t power up. When your tool has no power, it usually means the vehicle’s OBD socket is missing its power supply. The OBD port or socket is also known as DLC (Data Link Connector) provides power to your scan tool. I’ve been a mechanic for over twenty-five years, plugging in the scanner to find it won’t power up is a very common fault.
#Toyota diagnostic port test instrument panel light how to#
In this post, you’ll learn all the most likely causes of a scanner that won’t turn on, how to diagnose them and how to fix them. Checking the vehicle’s fuse box and replacing the blown fuse fixes the issue. If the check engine light fails to aluminate, you can be sure the fuse has blown. The most common cause of an OBD scanner that won’t turn on is a blown fuse on the vehicle’s OBD socket power supply circuit. This has happened to me a ton of times and it’s never the scanner’s fault. But don’t panic, we’ll get this figured out. Plugging in your scanner and finding it doesn’t work is slightly alarming, some of these tools are expensive.