Follow these instructions:
Apple Hardware Test Download Links. Contribute to upekkha/AppleHardwareTest development by creating an account on GitHub.
github.com
You need an Apple OEM GPU (HD 2600XT, 8800GT, Quadro FX 5600, GT120, HD 4870/5770/5870) to run AHT/ASD. AHT/ASD can be used with PC flashed GPUs, but will fail mid test when the GPU is checked. Non flashed PC GPUs won't work at all.
MP4,1 with MP5,1 firmware uses MP5,1 AHT/ASD.