ECU Terminal Values Measurement By Using Break-Out-Box & Hand-Held Tester

1. Hook up the break-out-box and hand-held tester to the vehicle. See Fig 1.
2. Read the ECU input/output values by following the prompts on the tester screen.
3. Refer to the hand-held tester Snapshot function. This records the measured data and is effective in the diagnosis of intermittent problems.

Fig 1: Identifying Break-Out-Box & Hand-Held Tester Connection

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