How can I measure the voltage of my DLC?
Since most of these 16 pin terminals of the DLC are used to communicate with your vehicle modules, you can use the following guide to measure the power, ground and signal data link voltages readings as shown below. 1.) With your voltmeter negative lead connected to the battery ground post and positive lead connected to following terminal pins:
How many volts does a 16 Volt DLC have?
Pin 16 is 12 volts all the time for all makes of vehicle. TIP WHEN YOU ARE NOT SURE ABOUT THE VOLTAGE READING Get hold of a wiring diagram first so you will know what pin at the DLC is working.
When does pin 6 start showing zero voltage?
Pin 6 should read zero voltage from 2003-2004 for GM and Ford vehicles but would start showing voltage reading on 2005 model, Chrysler would show zero voltage from 2003-2006 but would start showing voltage reading on 2007 model. Finally, Toyota vehicles showed voltage reading starting 2003 -2008 models.
What should the voltage reading on a DLC be?
When voltage reading appears, it should read between 1.5 volts upto 2.5 volts depending on the make of the vehicle. Pin 16 is 12 volts all the time for all makes of vehicle. TIP WHEN YOU ARE NOT SURE ABOUT THE VOLTAGE READING Get hold of a wiring diagram first so you will know what pin at the DLC is working.
Why is there no light on the break controller?
@JonG thank you Jon. Added a fuse to the fuse box to solve the 12v power issue, but still don’t get a light on the break controller prong unless we depress the break or push the manual override. Drove around the block with the trailer and got no breaking power to the trailer.
Why is my tow ready 7 way connector not lighting up?
If the light marked 12V on the Tow Ready 7-Way Connector Tester, part # TR20117, is not lighting up you will need to check to see if you need to install a fuse to activate the 12 volt power or if there is connection that might need to be made under the hood.
Pin 6 should read zero voltage from 2003-2004 for GM and Ford vehicles but would start showing voltage reading on 2005 model, Chrysler would show zero voltage from 2003-2006 but would start showing voltage reading on 2007 model. Finally, Toyota vehicles showed voltage reading starting 2003 -2008 models.