| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001B1YC |
| Model Year Start: 2019 | Model: Avalon | Prod Date Range: [04/2018 - ] |
| Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM (for Gasoline Model): Buzzer does not Sound; 2019 - 2022 MY Avalon [04/2018 - ] | ||
|
Buzzer does not Sound |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When checking for DTCs, make sure that the blind spot monitor system is turned on.
- Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
|
1. |
CHECK RCTA BUZZER (BLIND SPOT MONITOR BUZZER) |
(a) Check that the RCTA buzzer (blind spot monitor buzzer) sounds when the initial check is performed.
Click here
![2019 - 2022 MY Avalon [04/2018 - ]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM (for Gasoline Model): SYSTEM DESCRIPTION](/t3Portal/stylegraphics/info.gif)
OK:
RCTA buzzer sounds
| OK |
|
|
|
2. |
CHECK DTC |
(a) Turn the engine switch off.
(b) Turn the engine switch on (IG).
(c) Recheck for DTCs and check if the same DTC is output again.
Body Electrical > Blind Spot Monitor Slave > Trouble Codes
OK:
No DTCs are output.
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (RCTA BUZZER - BLIND SPOT MONITOR SENSOR LH) |
(a) Disconnect the K22 RCTA buzzer (blind spot monitor buzzer) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
K22-1 (BZP) - Body ground |
Engine Switch on (IG) |
11 to 14 V |
|
K22-2 (BZN) or P6-3 (BUZ) - Body ground |
Below 1 V |
|
|
K22-2 (BZN) - K22-1 (BZP) |
Below 1 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK HARNESS AND CONNECTOR (RCTA BUZZER - BLIND SPOT MONITOR SENSOR LH AND BATTERY) |
(a) Disconnect the K22 RCTA buzzer (blind spot monitor buzzer) connector.
(b) Disconnect the P6 blind spot monitor sensor LH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
K22-2 (BZN) - P6-3 (BUZ) |
Always |
Below 1 Ω |
|
K22-2 (BZN) or P6-3 (BUZ) - Body ground |
Always |
10 kΩ or higher |
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
K22-2 (BZN) or P6-3 (BUZ) - Body ground |
Engine switch on (IG) |
Below 1 V |
|
K22-1 (BZP) - Body ground |
Engine switch on (IG) |
11 to 14 V |
|
K22-1 (BZP) - Body ground |
Engine switch off |
Below 1 V |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|