Inspection Procedure 5: The electric motor switch-linked unfolding function does not work normally.


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

OPERATION




  • Electric motor switch (IG1)
  • Driver’s door switch

COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • The driver’s door switch may be defective
  • The ETACS-ECU may be defective
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check the ETACS customisation function.
By the ETACS customisation function, confirm that "Auto fold mirror" is set to "IG/electric motor switch open or close".

Q. Is the check result normal?
Go to step 2.
By the ETACS customisation function, set "Auto fold mirror" to "IG/electric motor switch open or close". (Refer to .)

STEP 2. M.U.T.-III data list
Check the input signals which are related to the electric motor switch-linked folding/unfolding function.

  • Driver’s seat door switch: ON
  • Electric motor switch (IG1): ON
Item No.
 Item name
 Normal conditions
Item 19
 Driver’s door switch
ON
Item 30
 IG SW (IG1)/Electric motor switch (ON)
 ON
OK: Normal conditions displayed for all the items

Q. Is the check result normal?
Normal conditions are displayed for all the items. : Go to step 3.
Normal condition is not displayed for item No. 19. : Refer to GROUP 54A - ETACS, Inspection Procedure 5 "The front door switch (RH) signal is not received ".
Normal condition is not displayed for item No. 30. : GROUP 54A - ETACS, Inspection Procedure 2 "The electric motor switch (IG1) signal is not received."? Refer to .

STEP 3. Check the trouble symptom.
Check that the electric motor switch-linked folding/unfolding function of door mirrors works normally.

Q. Is the check result normal?
Intermittent malfunction. Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points, - How to Cope with Intermittent Malfunctions .)
Replace the ETACS-ECU.