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
If this function does not work normally, the input signal circuit(s) below or the ETACS-ECU may be defective. Also, with the customisation function, the door mirrors may be set to a mode in which the ignition interlock fold/unfold function is not activated.

  • Ignition switch (IG1)
  • Door switch (Front; RH)

POSSIBLE CAUSES

  • Malfunction of the driver’s door switch
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Pulse check
Check the input signals below, which are related to the ignition interlock fold/unfold function.
System switch
 Check condition
Ignition switch (IG1)
 When turned from ACC to ON
Driver’s door switch
 When the driver’s door is opened
OK: The M.U.T.-III sounds or the voltmeter needle fluctuates.

Q. Are the check result normal?
All the signals are received normally. : Go to Step 3.
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 <LH drive vehicles> or <RH drive vehicles>."

Step 2. Customize function by using the SWS monitor
Use the SWS monitor customisation function to confirm that "DOOR 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?
Go to Step 3.
Use the SWS monitor customisation function to confirm that "the door mirrors are set to IG-LINKED FUN." (Refer to .)

Step 3. Retest the system.
Check that the ignition interlock fold/unfold function for the door mirrors 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.