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 position. 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.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (D DOOR COURTESY SW)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the tester ON.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) According to the display on tester, read on the "Data List".
Main Body ECU:






OK:
When the driver side door is opened/closed, the display will change as shown above.
OK -- READ VALUE USING TECHSTREAM (KEY UNLOCK WARNING SW)
NG -- Continue to next step.
2. INSPECT FRONT DOOR COURTESY SWITCH (DRIVER SIDE)




(a) Remove the front door courtesy switch (driver side).
(b) Measure the resistance.
Standard resistance:





(c) Reinstall the front door courtesy switch (driver side).
NG -- REPLACE FRONT DOOR COURTESY SWITCH (DRIVER SIDE)
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY SWITCH (DRIVER SIDE) - MAIN BODY ECU)




(a) Disconnect the J1 front door courtesy switch (driver side) connector.
(b) Disconnect the E7 main body ECU connector.
(c) Measure the resistance.
Standard resistance:





(d) Reconnect the courtesy switch and main body ECU connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. READ VALUE USING TECHSTREAM (KEY UNLOCK WARNING SW)
(a) Connect a Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the tester ON.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) According to the display on tester, read on the "Data List".
Main Body ECU:






OK:
When the ignition key is operated, the display changes as shown above.
OK -- INSPECT MAIN BODY ECU
NG -- Continue to next step.
5. INSPECT UNLOCK WARNING SWITCH ASSEMBLY




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





(c) Reinstall the unlock warning switch assembly.
NG -- REPLACE UNLOCK WARNING SWITCH ASSEMBLY
OK -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - MAIN BODY ECU)




(a) Disconnect the E21 unlock warning switch assembly connector.
(b) Disconnect the E8 main body ECU connector.
(c) Measure the resistance.
Standard resistance:





(d) Reconnect the unlock warning switch and the main body ECU connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
7. INSPECT MAIN BODY ECU




(a) Measure the voltage.
Standard voltage:






NG -- REPLACE MAIN BODY ECU
OK -- Continue to next step.
8. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - MAIN BODY ECU)
(a) Disconnect the E8 main body ECU connector.




(b) Disconnect the E13 combination meter assembly connector.
(c) Measure the resistance.
Standard resistance:





(d) Reconnect the main body ECU and combination meter assembly connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE COMBINATION METER ASSEMBLY