Measuring ECM Values With Toyota Break-Out Box

Reference:
Using TOYOTA break-out-box and TOYOTA hand-held tester, measure the ECU terminal values.
1. Turn the ignition switch OFF.
2. Hook up the TOYOTA break-out-box and TOYOTA hand-held tester to the vehicle.
3. Turn the ignition switch ON.
4. 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 break-out-box operator's manual for further details.