What is a  Delivery (Test) Mode on Subaru?

Normally, as a driver, you don’t need to worry about delivery mode (test mode) on Subaru vehicle. It’s usually required for a very few diagnostic procedures.

What is Test Mode Used For?

• Flashing ECM (some)
  • 📝 Some Subaru, for programming, besides green test connector also require additional nearby diagnostic connector to be connected for a successful reflashing, otherwise it might throw an error “rewrite voltage too low”.
• Writing VIN into a brand new ECM
  • If you don’t put a delivery fuse in, write function might fail. (e.g. 16 Subaru Sti)
• Testing EVAP System (e.g. 2000 Forester)
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  What else?x

How do I know if my Subaru is in Test Mode?

• Fans cycle on/off repeatedly
• Fuel Pump cycles on/off repeatedly
• Check Engine Light flashes
  • ECM might have no stored/present codes or,
  • ECM might weird codes
• Cruise Control Light flashes
• Relays are clicking

Test Mode Connector/Fuse Locations

• Delivery (Test) Mode Fuse

  • Under-hood Fuse Block (e.g.  14′  Subaru  Crostrek, 16′  Subaru  Sti, etc.)
    • 
  • Under-hood Fuse Block (e.g.  19′  Subaru  Outback, etc.)
    • 

• Delivery (Test) Mode Connector (green)

  • Left Side of Dash (e.g. 07′ Subaru Outback)
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  • Under passenger front portion of carpet, near the ECM
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    Where else? please attach a photo also.x