[54C] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - TONE ALARM - INSPECTION PROCEDURE B-4: Door-ajar warning function does not work.PRINT PAGE / INDEX / PRIOR / NEXT
INSPECTION PROCEDURE B-4: Door-ajar warning function does not work.
 CAUTION
 Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
The ETACS-ECU operates this function in accordance with the input signals below.
  • Ignition switch (IG1)
  • All of the door switches
  • Vehicle speed signal
If this function does not work normally, these input signal circuit(s) or the ETACS-ECU may be defective. Note that this function can be disabled/enabled by the customize function (default setting; enabled). In order to change the setting, the SWS monitor is required.
POSSIBLE CAUSES
  • Malfunction of the door switches
  • Malfunction of the engine-A/T-ECU
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Check the SWS monitor customized function.
Use the SWS monitor customize function to confirm that "DOOR WARN BUZ" is set to "W.FUNCTION".
Q: Is the check result normal?
YES:  Go to Step 2.
NO:  Use the SWS monitor customize function to set "DOOR WARN BUZ" to "W.FUNCTION" (Refer to ).
Step 2. ECU check on the SWS monitor
Check that the power supply and earth lines to the ETACS-ECU and the SWS communication lines are normal.
  • Ignition switch: ON
ECUS TO BE CHECKED
  • ETACS ECU
OK: "OK" is displayed on the "ETACS ECU" menu.
Q: Is the check result normal?
YES:  Go to Step 3.
NO:  Refer to Inspection Procedure A-3 "Communication with the ETACS-ECU is not possible" .
Step 3. Confirm communication data by using the SWS monitor.
Check the SWS communication signal, which is related to the door-ajar warning function.
<Selected item> ETACS
  • Driver's door: open
Item No.
 Item name
 Normal conditions
Item 30
 IG SW (IG1)
 ON
Item 38
 THEFT-ALARM
 ON
Item 43
 BUZZER
 ON

OK: Normal condition is displayed.
Q: Are the check result normal?
Normal conditions are displayed for all the items.:  Go to Step 4.
Normal condition is not displayed for item No.30.:  Refer to inspection procedure P-2 "The ignition switch (IG1) signal is not received" .
Normal condition is not displayed for item No.38.:  Refer to inspection procedure P-13 "All the door switch signals are not received" .
Normal condition is not displayed for item No.43.:  Replace the ETACS-ECU.
Step 4. Retest the system.
Check that the door-ajar warning function works normally.
Q: Is the check result normal?
YES:  The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
NO:  Replace the ETACS-ECU.
[54C] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - TONE ALARM - INSPECTION PROCEDURE B-4: Door-ajar warning function does not work.PRINT PAGE / INDEX / PRIOR / NEXT
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