INSPECTION PROCEDURE I-5: Ignition-linked fold/unfold 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)

Driver's door switch

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 ignition-linked fold/unfold function has been set by using the adjustment function.

POSSIBLE CAUSES

Malfunction of the driver's door switch

Malfunction of ETACS-ECU

Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Pulse check

Check the input signals below which are related to the electric retractable remote controlled door mirror ignition-linked fold/unfold function.

System switch	Check conditions
Ignition switch (IG1)	When turned from ACC to ON
Driver’s door switch	When the driver’s door is opened

OK: The MUT-II/III sounds or the voltmeter needle fluctuates.

Q: Are the check result normal?

All the signals are received normally.: Go to Step 2

.
The ignition switch (IG1) signal is not received.: Refer to inspection procedure P-2 "The ignition switch (IG1) signal is not received

."
The driver’s door switch signal is not received.: Refer to inspection procedure P-4 "The driver’s door switch signal is not received

Step 2. Check the SWS monitor customized function.

Use the SWS monitor customize function to confirm that "WING MIRROR" is set to "IG-LINKED FUN".

CAUTION

The SWS monitor must be used in order to confirm and change that setting. Use the SWS monitor to confirm and/or change the customized function.

Q: Is the check result normal?

YES: Go to Step 3

.
NO: Use the SWS monitor customize function to set the "WING MIRROR" to "IG-LINKED FUN" (Refer to GROUP 54C - Adjustment function

Step 3. Retest the system.

The vehicle speed-dependent unfolding function should now work normally.

Q: Is the check result normal?

YES: The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction

).
NO: Replace the ETACS-ECU.