Code No.B16A3 Turn-signal Lamp (LH) Short Circuit


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










DIAGNOSTIC FUNCTION



JUDGEMENT CRITERIA



PROBABLE CAUSES



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

DIAGNOSIS PROCEDURE


STEP 1. Connector check: A-35 headlamp assembly (LH) connector, A-09 side turn-signal lamp (LH) connector and F-23 rear combination lamp (LH) connector


Q. Is the check result normal?





STEP 2. Connector check: C-304 and C-311 ETACS-ECU connectors


Q. Is the check result normal?





STEP 3. Wiring harnesses check between A-35 headlamp assembly (LH) connector terminal No. 3, A-09 side turn-signal lamp (LH) connector terminal No. 2 or F-23 rear combination lamp (LH) connector terminal No. 2 and C-304 ETACS-ECU connector terminal No. 9 or C-311 ETACS-ECU connector terminal No. 18


note Before the wiring harness check, check the intermittent connector D-16, and then repair that if necessary.

  • Check the output lines for short circuit.

Q. Is the check result normal?





STEP 4. Check whether the diagnosis code is reset.


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

Q. Is the diagnosis code set?