Key Reminder Buzzer does not Sound (from 07/2011)
DOOR LOCK: KEY REMINDER WARNING SYSTEM (for Hatchback): 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 light switch signal to the combination meter.
WIRING DIAGRAM
INSPECTION PROCEDURE
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 How to Proceed with Troubleshooting. Then conduct the following troubleshooting procedure.
PROCEDURE
1. READ VALUE USING TECHSTREAM (FL DOOR COURTESY)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) According to the display on the Techstream, read the Data List.
Main Body
OK:
When the unlock warning switch is operated, the display changes as shown in the table.
NG -- GO TO LIGHTING SYSTEM (DOOR COURTESY LIGHT SWITCH CIRCUIT) Door Courtesy Switch Circuit (from 07/2011)
OK -- Continue to next step.
2. READ VALUE USING TECHSTREAM (KEY UNLOCK WARNING SW)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) According to the display on the Techstream, read the Data List.
Main Body
OK:
When the unlock warning switch is operated, the display changes as shown in the table.
NG -- INSPECT UNLOCK WARNING SWITCH ASSEMBLY
OK -- Continue to next step.
3. CHECK COMBINATION METER ASSEMBLY (BUZZER OPERATION)
(a) Remove the key from the key cylinder, turn the light control switch on the headlight dimmer switch assembly to the tail position, and open the driver door.
OK:
The light reminder warning buzzer sounds.
HINT
The key reminder warning system sounds the buzzer built in to the combination meter for key reminder warnings. This buzzer is also used for the light reminder warning system. Therefore, check the operation of the combination meter buzzer by checking if the buzzer sounds to inform that the lights are still on.
NG -- REPLACE COMBINATION METER ASSEMBLY Removal (from 07/2011)
OK -- REPLACE MAIN BODY ECU Removal (from 07/2011)
4. INSPECT UNLOCK WARNING SWITCH ASSEMBLY
(a) Inspect the unlock warning switch assembly Testing and Inspection.
NG -- REPLACE UNLOCK WARNING SWITCH ASSEMBLY Removal (from 07/2011)
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - UNLOCK WARNING SWITCH ASSEMBLY)
(a) Disconnect the D111 unlock warning switch and D143 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 MAIN BODY ECU Removal (from 07/2011)