DTC B1350: Speaker Circuit [02/2014 - ]: Procedure

1. Disconnect the F17 vehicle approaching speaker controller connector.
2. Disconnect the A11 vehicle approaching speaker assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F17-3 (SP+) - A11-1 (+)	Always	Below 1 Ω
   F17-8 (SP-) - A11-2 (-)	Always	Below 1 Ω
   F17-3 (SP+) or A11-1 (+) - Body ground	Always	10 kΩ or higher
   F17-8 (SP-) or A11-2 (-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  1

OK 

See step  2

1. Reconnect the F17 vehicle approaching speaker controller connector.
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Active Test.
6. Perform the Active Test according to the display on the Techstream.

   Body Electrical > Vehicle Proximity Notification System > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Proximity Sound (Vehicle Stationary)	Proximity sound (Vehicle stationary)	OFF or ON	Produces warning sound when vehicle is stopped

   Body Electrical > Vehicle Proximity Notification System > Active Test 

   Tester Display
   Proximity Sound (Vehicle Stationary)

7. Check the signal waveform according to the condition(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Vehicle Approaching Speaker Assembly)

   Item	Condition
   Tool setting	1 V/DIV., 200 ms./DIV.
   Vehicle condition	Vehicle approaching speaker operating

   OK

   The waveform is similar to that shown in the illustration.

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER. Refer to  REMOVAL [02/2014 - ] 

Result:  1

OK 

See step  3

1. Remove the vehicle approaching speaker assembly.

   Refer to REMOVAL [02/2014 - ]

2. Inspect the vehicle approaching speaker assembly.

   Refer to INSPECTION [02/2014 - ]

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - 11/2016]  Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2016 - ] 

Result:  2

NG 

REPLACE VEHICLE APPROACHING SPEAKER ASSEMBLY. Refer to  REMOVAL [02/2014 - ]