ECU Data Monitor Using Toyota Hand-Held Tester

DIAGNOSIS SYSTEM




Using TOYOTA break-out-box and TOYOTA hand-held tester, measure the ECU terminal values.
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 see the TOYOTA hand-held tester/TOYOTA breakout-box operator's manual for further details.