Electronic Brake Control Module: Testing and Inspection

NOTE: - Tools Required:
- TOYOTA break-out-box, or equivalent.
- TOYOTA hand-held tester, or equivalent.

1. Turn the Ignition Switch OFF.

Hand-Held Tester And Break-Out-Box:

2. Hook up the break-out-box and 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.

NOTE:
- 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 hand-held tester/break-out-box operator's manual for further details.
- Using SST 09843-18020, connect the terminals Tc and E1, and remove the short pin.
- If any abnormality is not found when inspection parts, inspect the ECU.
- If a malfunction code is displayed during the DTC check, check the circuit listed for that code.

DTC Check:

5. For details of each code, go to the respective "DTC No." in the DTC chart.