Key Reminder Warning System (W/O Entry And Start System) Key Reminder Buzzer Does Not Sound
Door Lock. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
READ VALUE USING INTELLIGENT TESTER (FRONT DOOR COURTESY LIGHT SWITCH)
READ VALUE USING INTELLIGENT TESTER (UNLOCK WARNING SWITCH)
INSPECT UNLOCK WARNING SWITCH ASSEMBLY
CHECK WIRE HARNESS (UNLOCK WARNING SWITCH - MAIN BODY ECU)
INSPECT FRONT DOOR COURTESY LIGHT SWITCH (for Driver Side)
CHECK WIRE HARNESS AND CONNECTORS (FRONT DOOR COURTESY LIGHT SWITCH - MAIN BODY ECU)
KEY REMINDER WARNING SYSTEM (w/o Entry and Start System) - 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 off or on (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
| 1.READ VALUE USING INTELLIGENT TESTER (FRONT DOOR COURTESY LIGHT SWITCH) |
Check the Data List to ensure proper operation of the front door courtesy light switch.
- Main body ECU:
Item
| Measurement Item / Display (Range)
| Normal Condition
| Diagnostic Note
|
D Door Courtesy SW
| Driver side door courtesy switch signal / ON or OFF
| ON: Driver side door is open
OFF: Driver side door is closed
| -
|
- OK:
- "ON" (driver door is open) appears on the screen.
| 2.READ VALUE USING INTELLIGENT TESTER (UNLOCK WARNING SWITCH) |
Check the Data List to ensure proper operation of the door unlock warning switch.
- Main body ECU:
Item
| Measurement Item / Display (Range)
| Normal Condition
| Diagnostic Note
|
Key Unlock Warning SW
| Unlock warning switch signal / ON or OFF
| ON: Key is in ignition key cylinder
OFF: No key is in ignition key cylinder
| -
|
- OK:
- "ON" (key is in ignition key cylinder) appears on the screen.
| | REPLACE COMBINATION METER ASSEMBLY |
|
|
| 3.INSPECT UNLOCK WARNING SWITCH ASSEMBLY |
Remove the unlock warning switch.
Measure the resistance of the switch.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
1 - 2
| Not pushed
| 10 kΩ or higher
|
1 - 2
| Pushed
| Below 1 Ω
|
| | REPLACE UNLOCK WARNING SWITCH ASSEMBLY |
|
|
| 4.CHECK WIRE HARNESS (UNLOCK WARNING SWITCH - MAIN BODY ECU) |
Disconnect the E9 switch connector.
Disconnect the IE junction block connector.
Measure the resistance between the wire harness side connectors.
- Standard resistance:
Tester Connection
| Specified Condition
|
E9-1 - IE-26 (KSW)
| Below 1 Ω
|
E9-2 - Body ground
| Below 1 Ω
|
| | REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
|
| OK |
|
|
|
| REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) |
|
| 5.INSPECT FRONT DOOR COURTESY LIGHT SWITCH (for Driver Side) |
Remove the courtesy light switch.
Measure the resistance of the switch.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
1 - Body ground
| Not pushed (ON)
| Below 1 Ω
|
1 - Body ground
| Pushed (OFF)
| 10 kΩ or higher
|
| | REPLACE FRONT DOOR COURTESY LIGHT SWITCH (for Driver Side) |
|
|
| 6.CHECK WIRE HARNESS AND CONNECTORS (FRONT DOOR COURTESY LIGHT SWITCH - MAIN BODY ECU) |
Disconnect the K8*1 or L4*2 switch connector.
Disconnect the IA junction block connector.
Measure the resistance between the wire harness side connectors.
- Standard resistance:
Tester Connection
| Specified Condition
|
K7-1 - IA-21 (DCTY)
| Below 1 Ω
|
| | REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
|
| OK |
|
|
|
| REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) |
|
