Inspection Procedure 2: The ESS (Emergency Stop signal System) function does not work normally.

caution

Whenever the ECU is replaced, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

COMMENTS ON TROUBLE SYMPTOM

If the ESS (Emergency Stop signal System) function does not work normally, ETACS-ECU, ABS-ECU <vehicles without ASC> or ASC-ECU <vehicles with ASC> may be defective. Also, the ESS does not work when the hazard warning lamps illuminate.

PROBABLE CAUSES

Malfunction of the ETACS-ECU
Malfunction of the ABS-ECU <vehicles without ABS>
Malfunction of the ASC-ECU <vehicles with ASC>