Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001PY6B
Model Year Start: 2021 Model: Avalon HV Prod Date Range: [08/2020 -           ]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B15C111,B15C113; GNSS Antenna Circuit Short to Ground; 2021 - 2022 MY Avalon Avalon HV [08/2020 -        ]

DTC

B15C111

GNSS Antenna Circuit Short to Ground

DTC

B15C113

GNSS Antenna Circuit Open

DESCRIPTION

These DTCs are stored when a malfunction occurs in the telephone and GPS antenna (for Roof Side) circuit.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15C111

GNSS Antenna Circuit Short to Ground

Current to the GNSS antenna is lower than the malfunction threshold for 10 seconds or more when the ignition switch is ON

(Short circuit)
  • DCM (telematics transceiver)
  • Telephone and GPS antenna assembly (for Roof Side)
  • Telephone and GPS antenna cord (No. 2 antenna cord sub-assembly)
  • Telephone and GPS antenna cord (No. 3 antenna cord sub-assembly)
  • Telephone and GPS antenna cord (No. 4 antenna cord sub-assembly)
  • Telephone and GPS antenna cord (No. 6 antenna cord sub-assembly)

B15C113

GNSS Antenna Circuit Open

Current to the GNSS antenna is higher than the malfunction threshold for 10 seconds or more when the ignition switch is ON

(Open circuit)
  • DCM (telematics transceiver)
  • Telephone and GPS antenna assembly (for Roof Side)
  • Telephone and GPS antenna cord (No. 2 antenna cord sub-assembly)
  • Telephone and GPS antenna cord (No. 3 antenna cord sub-assembly)
  • Telephone and GPS antenna cord (No. 4 antenna cord sub-assembly)
  • Telephone and GPS antenna cord (No. 6 antenna cord sub-assembly)

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Safety Connect System.

    Click here 2021 MY Avalon Avalon HV [08/2020 - 08/2021]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: PRECAUTION 2022 MY Avalon Avalon HV [08/2021 -        ]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: PRECAUTION

  • Refer to "PARTS LOCATION" for the installation location of telephone and GPS antenna cord.

    Click here 2021 - 2022 MY Avalon Avalon HV [08/2020 -        ]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: PARTS LOCATION

PROCEDURE

1.

CHECK DTC

(a) Turn the ignition switch off.

(b) Connect the GTS to the DLC3.

(c) Turn the ignition switch to ON and wait for 10 seconds or more.

(d) Turn the GTS on.

(e) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

(f) Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

OK

CHECK FOR INTERMITTENT PROBLEMS

NG

2.

INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY)

(a) Disconnect the K telephone and GPS antenna cord (No. 2 antenna cord sub-assembly) connector.

*a

Component without harness connected (Telephone and GPS Antenna Cord (No. 2 Antenna Cord Sub-assembly))

(b) Disconnect the J telephone and GPS antenna cord (No. 2 antenna cord sub-assembly) connector.

*a

Component without harness connected (Telephone and GPS Antenna Cord (No. 2 Antenna Cord Sub-assembly))

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

K-2 - J-2

Always

Below 1 Ω

K-2 or J-2 - Body ground

Always

10 kΩ or higher

K-2a - J-2a

Always

Below 1 Ω

K-2a or J-2a - Body ground

Always

10 kΩ or higher
NG

REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY) 2021 MY Avalon Avalon HV [08/2020 - 08/2021]; CELLULAR COMMUNICATION: TELEPHONE AND GPS ANTENNA CORDS: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; CELLULAR COMMUNICATION: TELEPHONE AND GPS ANTENNA CORDS: REMOVAL

OK

3.

INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY)

(a) Disconnect the I telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector.

*a

Component without harness connected (Telephone and GPS Antenna Cord (No. 3 Antenna Cord Sub-assembly))

(b) Disconnect the H telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector.

*a

Component without harness connected (Telephone and GPS Antenna Cord (No. 3 Antenna Cord Sub-assembly))

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

I-2 - H-2

Always

Below 1 Ω

I-2 or H-2 - Body ground

Always

10 kΩ or higher

I-2a - H-2a

Always

Below 1 Ω

I-2a or H-2a - Body ground

Always

10 kΩ or higher
NG

REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY) 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; AUDIO / VIDEO: RADIO ANTENNA CORD: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; AUDIO / VIDEO: RADIO ANTENNA CORD: REMOVAL

OK

4.

INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 4 ANTENNA CORD SUB-ASSEMBLY)

(a) Disconnect the G telephone and GPS antenna cord (No. 4 antenna cord sub-assembly) connector.

*a

Component without harness connected (Telephone and GPS Antenna Cord (No. 4 Antenna Cord Sub-assembly))

(b) Disconnect the E telephone and GPS antenna cord (No. 4 antenna cord sub-assembly) connector.

*a

Component without harness connected (Telephone and GPS Antenna Cord (No. 4 Antenna Cord Sub-assembly))

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

G-2 - E-2

Always

Below 1 Ω

G-2 or E-2 - Body ground

Always

10 kΩ or higher

G-2a - E-2a

Always

Below 1 Ω

G-2a or E-2a - Body ground

Always

10 kΩ or higher
NG

REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 4 ANTENNA CORD SUB-ASSEMBLY) 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; AUDIO / VIDEO: RADIO ANTENNA CORD: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; AUDIO / VIDEO: RADIO ANTENNA CORD: REMOVAL

OK

5.

INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 6 ANTENNA CORD SUB-ASSEMBLY)

(a) Disconnect the D telephone and GPS antenna cord (No. 6 antenna cord sub-assembly) connector.

*a

Component without harness connected (Telephone and GPS Antenna Cord (No. 6 Antenna Cord Sub-assembly))

(b) Disconnect the B telephone and GPS antenna cord (No. 6 antenna cord sub-assembly) connector.

*a

Component without harness connected (Telephone and GPS Antenna Cord (No. 6 Antenna Cord Sub-assembly))

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

D-2 - B-1

Always

Below 1 Ω

D-2 or B-1 - Body ground

Always

10 kΩ or higher

D-2a - B-1a

Always

Below 1 Ω

D-2a or B-1a - Body ground

Always

10 kΩ or higher
NG

REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 6 ANTENNA CORD SUB-ASSEMBLY) 2021 MY Avalon Avalon HV [08/2020 - 08/2021]; CELLULAR COMMUNICATION: TELEPHONE AND GPS ANTENNA CORDS: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; CELLULAR COMMUNICATION: TELEPHONE AND GPS ANTENNA CORDS: REMOVAL

OK

6.

CHECK TELEPHONE AND GPS ANTENNA (for Roof Side)

(a) Replace the telephone and GPS antenna (for Roof Side) with a known good one.

Click here 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; CELLULAR COMMUNICATION: TELEPHONE AND GPS ANTENNA (for Roof Side): REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; CELLULAR COMMUNICATION: TELEPHONE AND GPS ANTENNA (for Roof Side): REMOVAL

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

(c) Recheck for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

OK

END (TELEPHONE AND GPS ANTENNA (for Roof Side) IS DEFECTIVE)
NG

7.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

Click here 2021 - 2022 MY Avalon Avalon HV [08/2020 -        ]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL

NOTICE:

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

PERFORM DCM ACTIVATION