Inspection Procedure 4: The Interior Light Automatic Shutoff Function Does Not Work Normally: Diagnosis
- STEP 1. Using scan tool (M.U.T.-III), Check the customization function
Use the ETACS-ECU customization function to check to see which of the followings other than "Disable" the "Interior light auto cut timer" is set.
- 3 minutes
- 30 minutes
- 60 minutes
CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).- Connect scan tool (M.U.T.-III). Refer to "HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) ".
- Turn the ignition switch to the "ON" position.
- Use the ETACS-ECU customization function to check that the "Interior light auto cut timer" is set to "Disable"
- Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the check result normal?
- YES: Go to Step 2.
- NO: Use the ETACS-ECU customization function to set the "Interior light auto cut timer" to other than "Disable" (Refer to CUSTOMIZATION FUNCTION ).
- STEP 2. Using scan tool (M.U.T.-III), read the ETACS diagnostic trouble code.
Check if DTC is stored in the ETACS-ECU.
Q: Is the DTC stored?
- YES: Troubleshoot the ETACS-ECU. Refer to DIAGNOSTIC TROUBLE CODE TABLE .
- NO: Go to Step 3.
- STEP 3. Using scan tool (M.U.T.-III), check data list
Use the ETACS-ECU service data to check the signals related to the interior light automatic shutoff function.
- Turn the ignition switch to the LOCK (OFF) position.
- Open each door.
Item No. Item name Normal condition 254 IG voltage 1 V or less 288 ACC switch OFF 256 Dr door ajar switch Open 257 As door ajar switch Open 258 RR door ajar switch Open 259 RL door ajar switch Open OK: Normal conditions are displayed for all the items.
Q: Is the check result normal?
Normal conditions are displayed for all the items.: Go to Step 4.
Normal condition is not displayed for item No. 254.: Troubleshoot the ETACS-ECU. Refer to INSPECTION PROCEDURE 2: THE IGNITION SWITCH (IG1) SIGNAL IS NOT RECEIVED .
Normal condition is not displayed for item No. 288.: Troubleshoot the ETACS-ECU. Refer to INSPECTION PROCEDURE 1: THE IGNITION SWITCH (ACC) SIGNAL IS NOT RECEIVED .
Normal condition is not displayed for item No. 256.: Troubleshoot the ETACS-ECU. Refer to INSPECTION PROCEDURE 5: THE FRONT DOOR SWITCH (DRIVER'S SIDE) SIGNAL IS NOT RECEIVED .
Normal condition is not displayed for item No. 257.: Troubleshoot the ETACS-ECU. Refer to INSPECTION PROCEDURE 6: THE FRONT DOOR SWITCH (PASSENGER'S SIDE) SIGNAL IS NOT RECEIVED .
Normal condition is not displayed for item No. 258.: Troubleshoot the ETACS-ECU. Refer to INSPECTION PROCEDURE 7: THE REAR DOOR SWITCH (RH) SIGNAL IS NOT RECEIVED .
Normal condition is not displayed for item No. 259.: Troubleshoot the ETACS-ECU. Refer to INSPECTION PROCEDURE 8: THE REAR DOOR SWITCH (LH) SIGNAL IS NOT RECEIVED .
- STEP 4. Retest the system
Check that the interior light automatic shutoff function works normally.
Q: Is the check result normal?
- YES: The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
- NO: Replace the ETACS-ECU.