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Inspection Procedure 2: Keyless entry hazard light answerback function or the dome light answerback function does not work normally.
 
 
cautionWhenever the ECU is replaced, ensure that the input and output signal circuits are normal.
 
 
 
 
 
TECHNICAL DESCRIPTION (COMMENT)
If the hazard warning light and the dome light work normally, the ETACS-ECU may be defective.
Alternatively, it is possible that the keyless entry hazard light answerback function was disabled by the customize function.
 
 
 
TROUBLESHOOTING HINTS
  • Function setting error or no setting with a customization
  • The hazard warning light may be defective
  • The dome light may be defective
  • The ETACS-ECU may be defective
  • The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
 
 
 
 
DIAGNOSIS
STEP 1. Check the operation of the hazard warning light.
Check that the hazard warning light illuminates normally.
Is the check result normal?
Go to Step 2.
Refer to GROUP 54A, Inspection Procedure 1 "The hazard warning light do not illuminate ".
 
STEP 2. Check the operation of the dome light.
Check that the dome light illuminates normally.
Is the check result normal?
Go to Step 3.
Refer to GROUP 54A, Check Chart for Trouble Symptoms .
 
STEP 3. Check the operation of the keyless entry system.
If the keyless entry system is operated, check that the doors can be locked and unlocked normally.
Is the check result normal?
Go to Step 4.
Refer to Trouble symptom chart .
 
STEP 4. Check the customization function.
Using the customization function, check that the number of flashings of hazard warning light is set to any of the followings other than "LOCK: 0/UNLOCK: 0."
  • Lock 1 Unlock 2
  • Lock 1 Unlock 0
  • Lock 0 Unlock 2
  • Lock 2 Unlock 1
  • Lock 0 Unlock 1
  • Lock 2 Unlock 0
Is the check result normal?
Go to Step 5.
Enable the keyless entry hazard light answerback function by using the customization function (Refer to ).
 
STEP 5. Retest the system.
Check that the keyless entry hazard light answerback function or the dome light answerback function works normally.
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Replace the ETACS-ECU and register the ID codes (Refer to ).