Code No.U0218 P/W SW (RR) LIN timeout


caution Before replacing the ECU, ensure that the communication circuit is normal.








JUDGEMENT CRITERIA



PROBABLE CAUSES



  • Faulty rear power window sub switch (RH)
  • Malfunction of the LIN bus

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-301 ETACS-ECU connector, E-20 rear power window sub switch (RH) connector

Q. Is the check result normal?
Go to Step 2.
Repair the defective connector.

STEP 2. Check the wiring harness wires between C-301 ETACS-ECU connector terminal No. 1 and E-20 rear power window sub switch (RH) connector terminal No. 6.
note Prior to the wiring harness inspection, check joint connectors C-30, C-38, intermediate connectors C-27 and D-01, and repair if necessary.
Check the communication lines for open circuit and short circuit.

Q. Is the check result normal?
Go to Step 3.
Repair the wiring harness.

STEP 3. Check whether the diagnosis code is reset.
Check again if the diagnosis code is set to the ETACS-ECU.
(1)Erase the diagnosis code.
(2)Turn the ignition switch from the LOCK (OFF) position to the ON position.
(3)Check if diagnosis code is set.

Q. Is the diagnosis code set?
Replace the rear power window sub switch (RH).
A poor connection, open circuit, or other intermittent malfunctions in the LIN bus lines between the rear power window sub switch (RH) and the ETACS-ECU (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).