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 for proper functioning of the front door courtesy light switch LH.

Main Body





OK:

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

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

2. READ VALUE USING TECHSTREAM (UNLOCK WARNING SWITCH)

(a) Check the Data List for proper functioning of the unlock warning switch.

Main Body





OK:

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

NG -- INSPECT UNLOCK WARNING SWITCH ASSEMBLY

OK -- REPLACE COMBINATION METER ASSEMBLY

3. INSPECT UNLOCK WARNING SWITCH ASSEMBLY

(a) Remove the unlock warning switch assembly Removal.





(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:





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

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

(a) Disconnect the D19 unlock warning switch assembly and D10 main body ECU connectors.





(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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

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

(a) Remove the driver's side front door courtesy light switch Removal.





(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:





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

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

(a) Disconnect the O2 front door courtesy switch assembly and D8 main body ECU connectors.





(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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