No. 2 Clearance Warning Buzzer Circuit [02/2019 - 10/2023]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Clearance Warning / Active Test.
5. Check that the 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 power switch is on (IG)

   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 [02/2019 - 08/2020]  , or refer to  PROBLEM SYMPTOMS TABLE [08/2020 - ] 

Result: 

NG 

See step  2

1. Disconnect the G25*1 or H4*2 clearance warning ECU assembly connector.
   1. *1: for TMMC Made
   2. *2: for TMC Made
2. Disconnect the M13 No. 2 clearance warning buzzer connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   FOR TMMC MADE:
   
   

   Tester Connection	Condition	Specified Condition
   G25-25 (BBZ) - M13-1 (Z+)	Always	Below 1 Ω
   G25-26 (ER) - M13-2 (Z-)	Always	Below 1 Ω
   G25-25 (BBZ) or M13-1 (Z+) - Body ground	Always	10 kΩ or higher
   G25-26 (ER) or M13-2 (Z-) - Body ground	Always	10 kΩ or higher

   FOR TMC MADE:
   
   

   Tester Connection	Condition	Specified Condition
   H4-25 (BBZ) - M13-1 (Z+)	Always	Below 1 Ω
   H4-26 (ER) - M13-2 (Z-)	Always	Below 1 Ω
   H4-25 (BBZ) or M13-1 (Z+) - Body ground	Always	10 kΩ or higher
   H4-26 (ER) or M13-2 (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

1. Replace the No. 2 clearance warning buzzer with a new or known good one.

   Refer to REMOVAL [11/2018 - 11/2024]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Clearance Warning / Active Test.
5. Check that the 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 power switch is on (IG)

   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 [02/2019 - ]