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Inspection Procedure 11: Multimode keyless entry function does not work at all. <Up to 18 Model year>
 
 
cautionBefore replacing the ECU, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.
 
 
 
 
OPERATION
The ETACS-ECU may be defective when the electric-folding door mirrors works normally. Alternatively, the multimode keyless entry function may be deactivated by using the customization function.
 
 
PROBABLE CAUSES
  • Malfunction of the keyless operation key
  • Function setting error or no setting with a customization
  • Malfunction of ETACS-ECU
 
 
DIAGNOSIS
STEP 1. Check the keyless entry function operation.
Check that the keyless entry function works normally.
Is the check result normal?
Go to Step 2.
Refer to Inspection Procedure 8: keyless entry function does not work .
 
STEP 2. Check the operation of the electric-folding door mirror.
Check that the electric folding door mirrors work normally.
Is the check result normal?
Go to Step 3.
Refer to GROUP 51 - Outside Mirror - Symptom chart .
 
STEP 3. Using scan tool (M.U.T.-IIISE), check the DTC.
Check if any DTC is set in the KOS&OSS-ECU.
Is the DTC set?
Refer to diagnostic trouble code chart .
Go to Step 4.
 
STEP 4. Using scan tool (M.U.T.-IIISE), check the other system DTC.
Check if any DTC is set in the ETACS-ECU.
Is the DTC set?
Perform troubleshooting for the ETACS (Refer to GROUP 54A - ETACS - Diagnosis ).
Go to Step 5.
 
STEP 5. Check the customization
Check whether "Multi mode" is set as "D/M:Open & Close" on the customization function.
Is it set to other than disabled?
Go to Step 6.
Set "Multi mode" to "D/M:Open & Close" by using the customization function (Refer to ).
 
STEP 6. Check of the troubles
Check that the multimode keyless entry function works normally.
Is the check result normal?
Intermittent malfunction is suspected (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
Replace ETACS-ECU (Refer to GROUP 54A - ETACS - ETACS-ECU ).