INSPECTION PROCEDURE I-4: Vehicle speed-dependent unfolding function does not work normally.


caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.


COMMENTS ON TROUBLE SYMPTOM
The ETACS-ECU operates this function in accordance with the input signals below.

  • Ignition switch (IG1)
  • Vehicle speed signal
If this function does not work normally, these input signal circuit(s) or the ETACS-ECU may be defective. In addition, it is possible that the function except the vehicle speed-dependent unfolding function has been set by using the customized function.

POSSIBLE CAUSES

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

DIAGNOSTIC PROCEDURE

Step 1. Check the SWS monitor customized function.
Check that "WING MIRROR" is set to "SPEED SEN FUN" by using the customized function.

Q. Is the check result normal?
Go to Step 2.
Set "WING MIRROR" to "SPEED SEN FUN" by using the customized function.(Refer to ).

Step 2. Check the electric folding door mirrors operation.
Check that the door mirror is folded and unfolded with the remote controlled mirror switch when the ignition switch is at ACC position.

Q. Is the check result normal?
Go to Step 3.
Refer to inspection procedure I-1 "Electric retractable remote controlled door mirror does not work at all ."

Step 3. ECU check by using the SWS monitor.
Check that the power supply and earth lines to the ETACS-ECU and the SWS communication lines are normal.

  • Ignition switch: ON
ECUS TO BE CHECKED
  • ETACS ECU
OK: "OK" is displayed on the "ETACS ECU" menu.

Q. Is the check result normal?
Go to Step 4.
Refer to Inspection Procedure A-3 "Communication with ETACS-ECU is not possible ."

Step 4. ETACS ANALOG data by using the SWS monitor.
Check the ETACS-ECU signal related to the vehicle speed-dependent unfolding function.

  • Set the simulated vehicle speed at approximately 10km/h.
Item No.
 Item name
 Normal condition
Item 03
 SPEED SENSOR
 8 - 10km/h
OK: Normal condition is displayed.

Q. Is the check result normal?
Go to Step 5.
Refer to inspection procedure P-23 "The vehicle speed signal is not received ."

STEP 5. Retest the system.
Check that the vehicle speed-dependent unfolding function 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.