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

With the power switch OFF or ON (ACC), the combination meter sounds the buzzer when it receives a buzzer request signal from the transponder key ECU using the BEAN. The transponder key ECU outputs this signal when it receives: 1) a halfway switch signal (set when the key is in the key slot); and 2) a driver side door courtesy switch signal from the multiplex network body ECU (set when the driver side door is open).

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (DRIVER SIDE DOOR COURTESY LIGHT SWITCH)
(a) Check the Data List for proper functioning of the driver side door courtesy switch.

Main Body





OK:
Tester display changes correctly according to open / closed condition of door.
NG -- INSPECT FRONT DOOR COURTESY LIGHT SWITCH LH
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (HALFWAY SWITCH)
(a) Check the Data List for proper functioning of the key slot.

Transponder Key ECU





OK:
ON (key is in key slot) appears on the screen.
NG -- INSPECT KEY SLOT
OK -- Continue to next step.

3. CHECK COMBINATION METER
(a) Check the warning buzzer built into the combination meter Problem Symptoms Table.
OK:
Warning buzzer sounds.
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- REPLACE DRIVER SIDE JUNCTION BLOCK (BODY ECU)
4. INSPECT FRONT DOOR COURTESY LIGHT SWITCH LH




(a) Remove the courtesy light switch.
(b) Measure the resistance of the switch.
Standard resistance:






NG -- REPLACE FRONT DOOR COURTESY LIGHT SWITCH LH
OK -- Continue to next step.

5. CHECK WIRE HARNESS (COURTESY LIGHT SWITCH - BODY ECU)




(a) Disconnect the D7 switch connector.
(b) Disconnect the 1D junction block connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE DRIVER SIDE JUNCTION BLOCK (BODY ECU)
6. INSPECT KEY SLOT




(a) Remove the key slot.
(b) Measure the resistance of the switch.
Standard resistance:






NG -- REPLACE KEY SLOT
OK -- Continue to next step.

7. CHECK WIRE HARNESS (KEY SLOT - INSTRUMENT TRANSPONDER KEY ECU)




(a) Disconnect the K2 key slot connector.
(b) Disconnect the T5 ECU connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE TRANSPONDER KEY ECU