Code No.U1708 ETACS SWS Timeout


caution Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.










TROUBLE JUDGMENT



COMMENT ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Malfunction of the CAN converter-ECU
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE


STEP 1. Connector check: D-420 ETACS-ECU connector and D-252 CAN converter-ECU connector


Q. Is the check result normal?





STEP 2. Check the wiring harness between D-420 ETACS-ECU connector terminal No. 59 and D-252 CAN converter-ECU connector terminal No. 3.



  • Check the communication lines for open circuit.

Q. Is the check result normal?





STEP 3. Check whether the diagnosis code is reset.



(1)Replace the CAN converter-ECU.
(2)Erase the diagnosis code.
(3)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(4)Check if diagnosis code is set.

Q. Is the diagnosis code set?