Pinout Values and Diagnostic Parameters

ECU TERMINAL MEASUREMENT

Using LEXUS break-out-box and LEXUS hand-held tester, measure the ECU terminal values.
(1) Turn the ignition switch OFF.





(2) Hook up the LEXUS break-out-box and LEXUS 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:
- LEXUS 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 LEXUS hand-held tester/LEXUS breakout box operator's manual for further details.

HINT:
If the ignition switch is turned from ON to ACC or LOCK during test mode, DTC will be erased.

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ECU TERMINAL VALUES