Check engine light is on, can't communicate with scan tool. checked all fuses.
Is cooling fan on with key on? That will be an ecm problem. The ecm relay is 2nd from left in lower row also this relay may be covered by recall campaign
Get the correct scam tool with the right protocols for reading the codes
the cheaper tools --up to $500 will only read certain makes of cars
some only read European makes , some only Asian cars and companies like GM need a special scan tool to read their computers
makes like Nissan have a switch in the side of the ECM which needs to be turned on to get the codes reading on a scan tool
scan tools that have the capability to read all cars cost upwards of $15,000.00
SOURCE: DLC communications with OBD not possible
OBD II connector troubleshooting 101
I had the same problem with my 2000 Elantra. the OBD II connector pins get squished and won't make cantact with the scan tool, therefore no connection. the solution is to bend the pins back so they will connect to the scan tool.
FIRST! check your lighter and radio fuses (which you have already done). If possible, make sure your scan tool is working properly, try it on another car. If it is functioning properly, remove the 2 screws holding the obd II connector to the dash. Look for obvious signs of corrosion, damage, or stuff that shouln't be in the connector (rocks, gum, etc.) clean the connector with a good electronics cleaner (I use the CRC stuff), you can usually find it at you local parts store, radio shack, or even wal mart. hose down the inside of the connector thouroughly and allow time to dry.
check for voltage between 4 (gnd) & 16 (+vcc) then 5(gnd) and 16(+vcc) with the ignition on the voltage should be between 12v-16v (these pins may be different on other cars, look for an OBD II connector pinout diagram if your car is different). If this voltage is not present at either pin, the problem is not the connector. check your fuses and wiring. if this voltage is present at both pins continue.
Here's what I did. with the connector free from the dash, you can see the back of the connector where the wires enter the connector. on either side of the connector there may be a white clip. pop both of them off. you should be able to push a small screwdriver or pick in that space to pull the pins back out towards the outside of the connector. do one at a time so you can tell if the pin has moved back out into position. do this for all of the pins. Try to connect. if still no luck try again to push out the pins and reconnect.
If your connection is restored, replace the clips, screw it back into the dash. Return your car to the lousy DMV where they will proceed to tell you something else is wrong which they neglected to tell you on your first 10 visits!! :-)
Stuff thats good to know:
some auto parts stores will connect their OBD II scan tool to you car for free. auto zone is one place
some times the computer will need to reset to restore a connection to the scan tool. to do this simply cycle the ignition off (wait a few seconds) then on again.
online auction places are a excellent resource for USB to OBD II connectors to connect your laptop to your car. there is lots of OBD II diagnostic freeware out there to go with your newly purchased connector.
Good Luck
Chris
-CL Systems
SOURCE: 2OO7 Kia Sorento check engine light on, wont start
Throttle Position Sensor TPS needs to be set adjusted properly.
SOURCE: where do you plug in scan tool for check engine in 2001 Acura CL
it's under the radio
remove the black panel
SOURCE: 2001 sentra no communication with scan tool
Take a few minutes to make sure you dont have a blown fuse....Run through them with your test light...
SOURCE: OBD II system not communicating with state inspection machine or scan tool! 2002 kia Sedona
Turn you ignition switch to the on position ,does the CK ENG Lite appear, if yes this is a good indication. Your DLC (diagnostic link connector) should have battery voltage at pin 16 and ground at 4 and 5,If you can verify that your vehicle has this working order then its there problem and not yours
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The ability of the control module or modules to communicate through the serial data circuit.
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The identification of any stored diagnostic trouble codes (DTCs) and the status of the codes.
The use of the Diagnostic System Check - Vehicle will identify the correct procedure for diagnosing the system and where the procedure is located.
Install a scan tool.
Does the scan tool power up?
Go to Step 3
Go to Scan Tool Does Not Power Up
3
Does the scan tool communicate with all of the expected vehicle control modules?
If you don't have a scan tool that will communicate with all modules on the vehicle or understand this , your best bet is to take it to a ASE certified repair shop or the dealer .
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