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

TONE ALARM

INSPECTION PROCEDURE B-1: Ignition key reminder buzzer 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) 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 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: OFF 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 2. NO: Refer to Inspection Procedure A-3 "Communication with the 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 conditions
--- | --- | ---
Item 30 | IG SW(IG1) | OFF
Item 32 | DR DOOR SW | 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 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" . Normal condition is not displayed for item No.43.: Replace the ETACS-ECU.
| Step 3. Check the ETACS SW data by using the SWS monitor. Check the ETACS communication signals, which are related to the ignition key reminder function. Ignition switch: OFF (key inserted)
Item No. | Item name | Normal conditions
--- | --- | ---
Item 03 | KEY REMIN SW | OFF
OK: Normal condition is displayed. Q: Is the check result normal? YES: Go to Step 4. NO: Refer to inspection procedure P-10 "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.

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

©2004 Mitsubishi Motors Corporation