[54E] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - TONE ALARM - INSPECTION PROCEDURE B-1: Ignition key reminder buzzer function does not work. <Vehicles for GCC> | PRINT PAGE / INDEX / PRIOR / NEXT

TONE ALARM

INSPECTION PROCEDURE B-1: Ignition key reminder buzzer function does not work. <Vehicles for GCC>
| 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) Key reminder switch Driver's door switch If this function does not work normally, these input signal circuit(s) or the ETACS-ECU may be defective.
| POSSIBLE CAUSES Malfunction of the key reminder switch Malfunction of the driver's door switch Malfunction of the ETACS-ECU Damaged harness wires and connectors
| DIAGNOSIS PROCEDURE
| Step 1. ECU check by using the SWS monitor Check that the power supply and earth lines to the ETACS-ECU and the SWS communication lines are normal. Ignition switch: OFF ECU TO BE CHECKED ETACS ECU OK: "OK" is displayed on the "ETACS ECU" menu. Q: Is the check result normal? YES: Go to Step 2. NO: Refer to Inspection Procedure A-3 "Communication with ETACS-ECU is not possible ."
| Step 2. Function diagnosis by using the SWS monitor Check the SWS communication signals, which are related to the ignition key reminder function. <Selected item> BUZZER - KEY REMND. ALM Ignition switch: OFF (key inserted) Driver's door: open
Item No. | Item name | Normal condition
--- | --- | ---
Item 30 | IG SW(IG1) | OFF
Item 32 | DR DOOR SW*1 | ON
FRONT DOOR SW*2
Item 43 | BUZZER | ON
NOTE: *1 : Except for Australia *2 : Vehicles for Australia 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 3. 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.32.: Refer to Inspection Procedure P-4 "The driver's door switch signal is not received <LH drive vehicles>." Refer to Inspection Procedure P-4 "The driver's door switch signal is not received <RH drive vehicles>." Normal condition is not displayed for item No.43.: Go to Step 3.
| Step 3. Pulse check Check the input signals below, which are related to the ignition key reminder function.
System switch | Check condition
--- | ---
Key reminder switch | When the inserted ignition key is pulled out
OK: The MUT-II/III sounds or the voltmeter needle fluctuates. Q: Is the check result normal? YES: Go to Step 4. NO: Refer to Inspection Procedure P-12 "The key reminder switch signal is not received ."
| Step 4. Retest the system. The ignition key reminder buzzer function should work 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.

[54E] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - TONE ALARM - INSPECTION PROCEDURE B-1: Ignition key reminder buzzer function does not work. <Vehicles for GCC> | PRINT PAGE / INDEX / PRIOR / NEXT

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