No. 2 Clearance Warning Buzzer Circuit [09/2020 - ]: Procedure
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- PERFORM ACTIVE TEST USING GTS (REAR BUZZER)
- Connect the GTS to the DLC3.
- Turn the ignition switch to ON.
- Turn the GTS on.
- Enter the following menus: Body Electrical / Clearance Warning / Active Test.
- Check that the rear buzzer operates by performing the Active Test.
Body Electrical > Clearance Warning > Active Test
Tester Display Measurement Item Control Range Diagnostic Note Rear Buzzer No. 2 clearance warning buzzer OFF or ON Confirm that the vehicle is stopped and the ignition switch is ON Body Electrical > Clearance Warning > Active Test
Tester Display Rear Buzzer OK
The No. 2 clearance warning buzzer sounds.
Result
Proceed to OK NG
Result:
OK
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [09/2020 - ]
Result:
NG
See step 2
- CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - NO. 2 CLEARANCE WARNING BUZZER)
- Disconnect the K44 clearance warning ECU assembly connector.
- Disconnect the Q76 No. 2 clearance warning buzzer connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition K44-25 (BBZ) - Q76-1 (Z+) Always Below 1 Ω K44-26 (ER) - Q76-2 (Z-) Always Below 1 Ω K44-25 (BBZ) or Q76-1 (Z+) - Body ground Always 10 kΩ or higher K44-26 (ER) or Q76-2 (Z-) - Body ground Always 10 kΩ or higher Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 3
- REPLACE NO. 2 CLEARANCE WARNING BUZZER
- Replace the No. 2 clearance warning buzzer with a new or known good one.
Refer to REMOVAL [09/2020 - ]
Result
Proceed to NEXT
Result:
NEXT
See step 4
- Replace the No. 2 clearance warning buzzer with a new or known good one.
- PERFORM ACTIVE TEST USING GTS (REAR BUZZER)
- Connect the GTS to the DLC3.
- Turn the ignition switch to ON.
- Turn the GTS on.
- Enter the following menus: Body Electrical / Clearance Warning / Active Test.
- Check that the rear buzzer operates by performing the Active Test.
Body Electrical > Clearance Warning > Active Test
Tester Display Measurement Item Control Range Diagnostic Note Rear Buzzer No. 2 clearance warning buzzer OFF or ON Confirm that the vehicle is stopped and the ignition switch is ON Body Electrical > Clearance Warning > Active Test
Tester Display Rear Buzzer OK
The No. 2 clearance warning buzzer sounds.
Result
Proceed to OK NG
Result:
OK
END (NO. 2 CLEARANCE WARNING BUZZER WAS DEFECTIVE)
Result:
NG
REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to REMOVAL [04/2013 - ]