Jerry, You should have 12 + volts on the wire or that side of the relay. If you have the diagram D:04:12, it comes thru #7 fuse directly to the contacts. You may have a burnt contact and it's not conducting properly due to high resistance. You can see the diagram on my web site. The Lambda processes the voltage from the 02 sensor as it reads the mixture to adjust the FV. It's rare that a Lambda unit doesn't work. Most of the the time the 02 sensor is contimanited and doesn't respond to the mixture and FV won't change and just runs rich or lean. Call or email if you need any more help. John hervey www.specialtauto.com