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Home >> Subaru >> 2016 >> Crosstrek Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Security And Locks) >> Keyless Entry System >> Inspection >> Check Keyless Buzzer
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Check Keyless Buzzer

WARNING: This page is about a different car, the 2015 Subaru XV Crosstrek and 2015 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
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1 CHECK BODY INTEGRATED UNIT SETTING. 
Display the data of «Answer-back buzzer setup» using Subaru Select Monitor.
NOTE: For detailed procedures, refer to "PC application help for Subaru Select Monitor".
 Is the setting ON? Go to step 2  . Turn the setting to ON.
2 CHECK BODY INTEGRATED UNIT. 
Select and perform the «Keyless Buzzer Output » using Subaru Select Monitor.		 Does the keyless buzzer sound? Check the keyless control module. Go to step 3  .
3 CHECK KEYLESS BUZZER CIRCUIT. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the connectors of the body integrated unit and keyless buzzer.
  3. Check the harness between body integrated unit and keyless buzzer.

    Connector & terminal (B280) No. 20 - (B164) No. 1: 

 Is harness normal? Go to step 4  . Repair or replace the harness.
4 CHECK HARNESS. 
Measure the resistance between keyless buzzer connector and chassis ground.
Connector & terminal (B164) No. 1 - Chassis ground: 		 Is the resistance value 10 kΩ or more? Go to step 5  . Repair or replace the short circuit of the harness.
5 CHECK KEYLESS BUZZER CIRCUIT. 
Measure the resistance between the keyless buzzer connector and chassis ground.
Connector & terminal (B164) No. 2 - Chassis ground: 		 Is the resistance less than 10 Ω? Go to step 6  . Repair or replace the harness.
6 CHECK BODY INTEGRATED UNIT. 
  1. Connect the connector of body integrated unit.
  2. Select and perform the «Keyless Buzzer Output» using Subaru Select Monitor.
  3. Measure the voltage between body integrated unit connector and chassis ground using an oscilloscope.

    Connector & terminal (B280) No. 20 (+) - Chassis ground (-): 

 Is the frequency 2 kHz or the voltage 9 V or more? Replace the keyless buzzer. Replace the body integrated unit. < Ref. to BODY INTEGRATED UNIT .>
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