Inspection Procedure 1: Electric retractable remote controlled door mirror does not work.
caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.










COMMENTS ON TROUBLE SYMPTOM
If the electric retractable remote controlled door mirror does not work at all, these power supply circuit(s), these earth circuit(s), remote controlled mirror switch or ETACS-ECU may be defective.

POSSIBLE CAUSES

  • Malfunction of the remote controlled mirror switch
  • Malfunction of ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. Pulse check
Check the input signals below which are related to the electric retractable remote controlled door mirror.
System switch
 Check conditions
Ignition switch (ACC)
 When turned from the LOCK (OFF) position to the ACC position
Electric remote controlled mirror switch (folding/unfolding switch)
 When the switch turned from off to on
OK: The M.U.T.-III sounds or the voltmeter needle fluctuates.

Q. Is the check result normal?
All the signals are received normally. : Go to Step 2.
The ignition switch (ACC) signal is not received. : Refer to GROUP 54A - ETACS, Inspection procedure C-1 "The ignition switch (ACC) signal is not received ."
The electric remote controlled mirror switch (folding/unfolding switch) signal is not received. : Refer to GROUP 54A - ETACS, Inspection procedure C-18 "Signal is not received from remote controlled mirror switch (folding/unfolding switch) ."

Step 2. Connector check: D-419 ETACS-ECU connector.

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

Step 3. Voltage measurement at the D-419 ETACS-ECU connector.
(1)Remove the ETACS-ECU, and measure at the junction block side.
(2)Check the voltage between the D-419 ETACS-ECU connector terminal No.2 and body earth.
OK: Battery voltage

Q. Is the check result normal?
Go to Step 5.
Go to Step 4.

Step 4. Check the wiring harness between D-419 ETACS-ECU connector terminal No.2 and the fusible link (2).
note Prior to the wiring harness inspection, check intermediate connectors D-240 and junction block connector D-404, and repair if necessary.

  • Check the power supply line to the battery for open circuit.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Repair the wiring harness.

Step 5. Retest the system.
Check that the electric retractable remote controlled mirror works normally.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the ETACS-ECU.