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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Safety Connect System - Diagnostic Codes & Symptom Tests) >> Safety Connect System >> DTC B15CB-11: Telephone Main Antenna Circuit Short to Ground; DTC B15CB-13: Telephone Main Antenna Circuit Open [08/2020 - ] >> Procedure

DTC B15CB-11: Telephone Main Antenna Circuit Short to Ground; DTC B15CB-13: Telephone Main Antenna Circuit Open [08/2020 - ]: Procedure

WARNING: This page is about a different car, the 2022 Toyota Avalon and 2021 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC 
    1. Turn the ignition switch off.
    2. Connect the GTS to the DLC3.
    3. Turn the ignition switch to ON and wait for 10 seconds or more.
    4. Turn the GTS on.
    5. Clear the DTCs.

      Body Electrical > Telematics > Clear DTCs 

    6. Recheck for DTCs.

      Body Electrical > Telematics > Trouble Codes 

      OK

      No DTCs are output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 - ] 

    Result: 

    NG 

    See step  2

  2. INSPECT TELEPHONE AND GPS ANTENNA ASSEMBLY (for Roof Side) 
    1. Disconnect the telephone and GPS antenna assembly (for Roof Side) connector.
      GTY446643Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Telephone and GPS Antenna Assembly (for Roof Side))
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      4 - 4a Always 9 to 11 kΩ

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY (for Roof Side). Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

    Result: 

    OK 

    See step  3

  3. INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY) 
    1. Disconnect the K telephone and GPS antenna cord (No. 2 antenna cord sub-assembly) connector.
      GTY845169Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected (Telephone and GPS Antenna Cord (No. 2 Antenna Cord Sub-assembly))
    2. Disconnect the J telephone and GPS antenna cord (No. 2 antenna cord sub-assembly) connector.
      GTY981525Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected (Telephone and GPS Antenna Cord (No. 2 Antenna Cord Sub-assembly))
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K-4 - J-3 Always Below 1 Ω
      K-4 or J-3 - Body ground Always 10 kΩ or higher
      K-4a - J-3a Always Below 1 Ω
      K-4a or J-3a - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY). Refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

    Result: 

    OK 

    See step  4

  4. INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY) 
    1. Disconnect the I telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector.
      GTY921523Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected (Telephone and GPS Antenna Cord (No. 3 Antenna Cord Sub-assembly))
    2. Disconnect the H telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector.
      GTY915861Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected (Telephone and GPS Antenna Cord (No. 3 Antenna Cord Sub-assembly))
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I-3 - H-3 Always Below 1 Ω
      I-3 or H-3 - Body ground Always 10 kΩ or higher
      I-3a - H-3a Always Below 1 Ω
      I-3a or H-3a - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY). Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

    Result: 

    OK 

    See step  5

  5. INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 4 ANTENNA CORD SUB-ASSEMBLY) 
    1. Disconnect the G telephone and GPS antenna cord (No. 4 antenna cord sub-assembly) connector.
      GTY921522Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected (Telephone and GPS Antenna Cord (No. 4 Antenna Cord Sub-assembly))
    2. Disconnect the E telephone and GPS antenna cord (No. 4 antenna cord sub-assembly) connector.
      GTY915860Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected (Telephone and GPS Antenna Cord (No. 4 Antenna Cord Sub-assembly))
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G-3 - E-3 Always Below 1 Ω
      G-3 or E-3 - Body ground Always 10 kΩ or higher
      G-3a - E-3a Always Below 1 Ω
      G-3a or E-3a - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 4 ANTENNA CORD SUB-ASSEMBLY). Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

    Result: 

    OK 

    See step  6

  6. INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 6 ANTENNA CORD SUB-ASSEMBLY) 
    1. Disconnect the D telephone and GPS antenna cord (No. 6 antenna cord sub-assembly) connector.
      GTY921521Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected (Telephone and GPS Antenna Cord (No. 6 Antenna Cord Sub-assembly))
    2. Disconnect the C telephone and GPS antenna cord (No. 6 antenna cord sub-assembly) connector.
      GTY944352Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected (Telephone and GPS Antenna Cord (No. 6 Antenna Cord Sub-assembly))
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D-3 - C-1 Always Below 1 Ω
      D-3 or C-1 - Body ground Always 10 kΩ or higher
      D-3a - C-1a Always Below 1 Ω
      D-3a or C-1a - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 6 ANTENNA CORD SUB-ASSEMBLY). Refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

    Result: 

    OK 

    See step  7

  7. REPLACE DCM (TELEMATICS TRANSCEIVER) 
    1. Replace the DCM (telematics transceiver).

      Refer to REMOVAL [08/2020 - ]

      NOTE:
      • The ignition switch must be off.
      • Do not swap the DCM (telematics transceiver) with one from another vehicle.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    PERFORM DCM ACTIVATION. Refer to  DCM ACTIVATION [08/2020 - ] 

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