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INSPECTION PROCEDURE 5: Ignition-linked fold/unfold function does not work normally.
 
 
cautionBefore replacing the ECU, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.
 
 
CIRCUIT OPERATION
The ETACS-ECU operates this function in accordance with the input signals below.
  • Ignition switch (IG1)
  • Front door switch (driver's side)
 
 
 
TECHNICAL DESCRIPTION (COMMENT)
If this function does not work normally, these input signal circuit(s) or the ETACS-ECU may be defective. Also, with the configuration function, the door mirrors may be set to a mode in which the ignition interlock fold/unfold function is not activated.
 
 
 
TROUBLESHOOTING HINTS
  • Malfunction of the front door switch (driver's side)
  • Malfunction of the ETACS-ECU
  • Damaged wiring harness and connectors
 
 
 
 
DIAGNOSIS
STEP 1. Check the ETACS configuration function.
Use the ETACS configuration function to confirm that "Auto fold mirror" is set to "Open/Close by IG".
Is the check result normal?
Go to Step 2.
Use the ETACS configuration function to set "Auto fold mirror" to "Open/Close by IG" (Refer to ).
 
STEP 2. Check an input signal which is related to ignition-linked folding/unfolding function.
  • Driver's door: open
  • Ignition switch: ON
 
Item No.Item nameNormal conditions
Item 254IG voltageBattery positive voltage
Item 256Dr door ajar switchOpen
OK: Normal conditions displayed for all the items
Is the check result normal?
Normal conditions displayed for all the items : Go to Step 3.
Normal condition is not displayed for item No. 254. : Refer to GROUP 54A - ETACS, Inspection Procedure 2 "ETACS-ECU does not receive any signal from the ignition switch (IG1)."
Normal condition is not displayed for item No. 256. : Refer to GROUP 54A - ETACS, Inspection Procedure 5 "ETACS-ECU does not receive any signal from the front door switch (LH)."
 
STEP 3. Retest the system.
Check that the ignition-liked fold/unfold function for the door mirrors works normally.
Is the check result normal?
Intermittent malfunction (Refer to the basic Service Manual, GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
Replace the ETACS-ECU.