ECU Data Monitor Using Toyota Tester

1. Hook up the TOYOTA hand-held tester and TOYOTA break-out-box to the vehicle.
2. Read the ECU input/output values by following the prompts on the tester screen.

HINT: TOYOTA hand-held tester has a "Snapshot" function. This records the measured values and is effective in the diagnosis of intermittent problems. Please refer to the TOYOTA hand-held tester/TOYOTA brake out-box operators manual for further details.