Toyota Break-Out-Box Connection
Connecting The Toyota Hand Held Tester:
The Toyota Hand-held Tester can be connected to Data Link Connector 1 (DLC 1) for reading codes.
Measure The ECM Terminal Values With A Break-Out-Box:
It can also be used with the Toyota Break-out-box which can be connected in series with the Engine Control Module (ECM) connectors.
See the Toyota Hand-held Tester/Toyota Break-out-box operators manual for further details.