Key Reminder Buzzer Does Not Sound

DOOR LOCK: KEY REMINDER WARNING SYSTEM: Key Reminder Buzzer does not Sound
- Key Reminder Buzzer does not Sound

DESCRIPTION

The key reminder warning buzzer sounds when the driver side door is opened while the ignition switch is in the LOCK or ACC positions. The key reminder warning buzzer is activated when the main body ECU sends a key switch signal and driver side courtesy switch signal to the combination meter.

HINT
Since the key reminder warning system has functions that use CAN communication, first confirm that there is no malfunction in the communication system by inspecting the CAN communication functions in accordance with the "HOW TO PROCEED WITH TROUBLESHOOTING" procedures. Then, conduct the following inspection procedure.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (FRONT DOOR COURTESY LIGHT SWITCH)

(a) Check the Data List to ensure proper operation of the front door courtesy light switch.

Main Body:





OK:

"ON" (driver door is open) appears on the screen.

NG -- INSPECT FRONT DOOR COURTESY LIGHT SWITCH (for Driver Side)
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (UNLOCK WARNING SWITCH)

(a) Check the Data List to ensure proper operation of the door unlock warning switch.

Main Body:





OK:

"ON" (key is in ignition key cylinder) appears on the screen.

OK -- REPLACE COMBINATION METER ASSEMBLY
NG -- Continue to next step.

3. INSPECT UNLOCK WARNING SWITCH ASSEMBLY

(a) Remove the unlock warning switch.





(b) Measure the resistance of the switch.

Standard resistance:





NG -- REPLACE UNLOCK WARNING SWITCH ASSEMBLY
OK -- Continue to next step.

4. CHECK WIRE HARNESS (UNLOCK WARNING SWITCH - MAIN BODY ECU)

(a) Disconnect the E6 switch connector.





(b) Disconnect the IE junction block connector.

(c) Measure the resistance between the wire harness side connectors.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)

5. INSPECT FRONT DOOR COURTESY LIGHT SWITCH (for Driver Side)

(a) Remove the courtesy light switch.





(b) Measure the resistance of the switch.

Standard resistance:





NG -- REPLACE FRONT DOOR COURTESY LIGHT SWITCH (for Driver Side)
OK -- Continue to next step.

6. CHECK WIRE HARNESS AND CONNECTORS (FRONT DOOR COURTESY LIGHT SWITCH - MAIN BODY ECU)

(a) Disconnect the K7 connector.





(b) Disconnect the IA junction block connector.

(c) Measure the resistance between the wire harness side connectors.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)