In your left side kick panel look for your power relay, its located here.
Use your multi-meter and measure voltage and continuity at these pins with the ignition sw on.
Pin 1 - 12v
Pin 2 - 12v
Pin 3 - Continuity to ground. (or <1ohm)
Pin 4 - No Continuity to ground (or >1ohm)
Remember these readings need to be done with the ignition sw on.
Here is the schematic.
http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=094
Use your multi-meter and measure voltage and continuity at these pins with the ignition sw on.
Pin 1 - 12v
Pin 2 - 12v
Pin 3 - Continuity to ground. (or <1ohm)
Pin 4 - No Continuity to ground (or >1ohm)
Remember these readings need to be done with the ignition sw on.
Here is the schematic.
http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=094