[54C] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - TONE ALARM - INSPECTION PROCEDURE B-5: Turn-signal lamp operation sound function does not work normally. | PRINT PAGE / INDEX / PRIOR / NEXT

INSPECTION PROCEDURE B-5: Turn-signal lamp operation sound function does not work normally.
| 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) Turn-signal lamp switch Hazard warning lamp switch 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; disabled). In order to change the setting, the SWS monitor is required.
| POSSIBLE CAUSES Malfunction of the column switch Malfunction of the hazard warning lamp switch 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 "T/SIG.BUZZER" 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 "T/SIG.BUZZER" 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 column switch (column-ECU) and the SWS communication lines are normal. Ignition switch: ON ECUS TO BE CHECKED ETACS ECU COLUMN ECU OK: "OK" are displayed for all the items Q: Are the check result normal? "OK" are displayed for all the items: Go to Step 3. "NG" is displayed on the "ETACS ECU" menu.: Refer to Inspection Procedure A-3 "Communication with the ETACS-ECU is not possible" . "NG" is displayed on the "COLUMN ECU" menu.: Refer to Inspection Procedure A-2 "Communication with the column switch (column-ECU) is not possible" .
| Step 3. Confirm communication data by using the SWS monitor. Check the SWS communication input signal, which are related to the turn-signal lamp operation sound function. <Selected item> ETACS Ignition switch: ON Driver's door: open
Item No. | Item name | Normal conditions
--- | --- | ---
Item 30 | IG SW( IG1) | ON
Item 43 | BUZZER | ON
OK: Normal conditions are displayed for all the items. 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.43.: Replace the ETACS-ECU.
| Step 4. Confirm communication data by using the SWS monitor. Check the SWS communication input signal, which are related to the turn-signal lamp operation sound function. <Selected item> COLUMN ECU Turn-signal lamp switch (RH): ON (only when item No.10 is checked) Turn-signal lamp switch (LH): ON (only when item No.11 is checked)
Item No. | Item name | Normal conditions
--- | --- | ---
Item 10 | TURN SIG. RH | ON
Item 11 | TURN SIG. LH | ON
OK: Normal conditions are displayed for all the items. Q: Are the check result normal? Normal conditions are displayed for all the items.: Go to Step 5. Normal condition is not displayed for item No.10.: Refer to inspection procedure P-5 "The column switch (lighting and turn-signal lamp switch) signal is not received" . Normal condition is not displayed for item No.11.: Refer to inspection procedure P-5 "The column switch (lighting and turn-signal lamp switch) signal is not received" .
| Step 5. Check the ETACS SW data by using the SWS monitor. Check the ETACS-ECU signal, which is related to the turn-signal lamp operation sound function. Hazard warning lamp switch: ON
Item No. | Item name | Normal conditions
--- | --- | ---
Item 04 | HAZARD LMP SW | ON
OK: Normal condition is displayed. Q: Is the check result normal? YES: Go to Step 6. NO: Refer to inspection procedure P-12 "The hazard warning lamp switch signal is not received" .
| Step 6. Retest the system. Check that the turn-signal lamp operation sound 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-5: Turn-signal lamp operation sound function does not work normally. | PRINT PAGE / INDEX / PRIOR / NEXT

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