ECU Terminal Values Measurement By Using Break-Out-Box & Hand-Held Tester
WARNING: This page is about a different car, the 2002 Lexus GS 430 and 2002 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
- Hook up the break-out-box and hand-held tester to the vehicle. See Fig 1.
- Read the ECU input/output values by following the prompts on the tester screen.
- Refer to the hand-held tester Snapshot function. This records the measured data and is effective in the diagnosis of intermittent problems.