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

When the ignition switch is in the LOCK or ACC position, the key is in the ignition key cylinder and the driver side door is open, the key reminder buzzer sounds. The key reminder buzzer is activated when the multiplex network body ECU transmits a key switch signal and a driver side courtesy switch signal to the combination meter.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE)
(a) Move the room light switch to the DOOR position and open the driver side door. Then check that the room light turns ON.
OK:
Room light turns ON.
OK -- CHECK BUZZER (COMBINATION METER)
NG -- Continue to next step.
2. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE)





(a) Remove the front door courtesy light switch assembly.
(b) Measure the resistance of the switch.
Standard Resistance:





(c) Reinstall the front door courtesy light switch assembly.
NG -- REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE)
OK -- Continue to next step.
3. CHECK WIRE HARNESS (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - BODY ECU)





(a) Disconnect the D11 front door courtesy light switch assembly connector.
(b) Disconnect the 1F driver side J/B connector.
(c) Measure the resistance.
Standard Resistance:





(d) Reconnect the front door courtesy light switch assembly connector.
(e) Reconnect the driver side J/B connector.
NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
4. CHECK BUZZER (COMBINATION METER)
(a) Check that the buzzer built into the combination meter sounds (On-Vehicle inspection).
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- Continue to next step.
5. INSPECT UNLOCK WARNING SWITCH ASSEMBLY





(a) Remove the U1 unlock warning switch assembly.
(b) Measure the resistance of the switch.
Standard Resistance:





(c) Reinstall the unlock of the switch assembly.
NG -- REPLACE UNLOCK WARNING SWITCH ASSEMBLY
OK -- Continue to next step.
6. CHECK WIRE HARNESS (SWITCH (DRIVER SIDE) - ECU AND BODY GROUND)





(a) Disconnect the U1 unlock warning switch assembly connector.
(b) Disconnect the 1K driver side J/B connector.
(c) Measure the resistance of the wire harness side connectors.
Standard Resistance:





(d) Reconnect the unlock warning switch assembly connector.
(e) Reconnect the driver side J/B connector.
NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE DRIVER SIDE JUNCTION BLOCK (MULTIPLEX NETWORK BODY ECU)