Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001EGZS
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 - 10/2019]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B1573,B15CB; Short in Telephone Antenna Circuit; 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]

DTC

B1573

Short in Telephone Antenna Circuit

DTC

B15CB

Telematics Transceiver Antenna Disconnected

DESCRIPTION

These DTCs are stored when the DCM (Telephone Transceiver Assembly) detects an open or a short in the telephone and GPS antenna assembly (No. 1 amplifier antenna assembly) circuit. The DCM (Telephone Transceiver Assembly) oscillates and receives 824 - 894 MHz or 1850 - 1990 MHz radio-frequency through the telephone and GPS antenna assembly (No. 1 amplifier antenna assembly).

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B1573

Short in Telephone Antenna Circuit

Telephone and GPS antenna assembly (No. 1 amplifier antenna assembly) impedance is lower than malfunction criterion for 10 seconds when ignition switch is ON.

(Short circuit)
  • DCM (Telephone Transceiver Assembly)
  • Telephone and GPS antenna assembly (No. 1 amplifier antenna assembly)
  • Telephone and GPS antenna cord (No. 4 antenna cord sub-assembly)
  • Telephone and GPS antenna cord (No. 3 antenna cord sub-assembly)
  • Telephone and GPS antenna cord (antenna cord sub-assembly)
  • Telephone and GPS antenna cord (No. 2 antenna cord sub-assembly)

B15CB

Telematics Transceiver Antenna Disconnected

Telephone and GPS antenna assembly (No. 1 amplifier antenna assembly) impedance is higher than malfunction criterion for 10 seconds when ignition switch is ON.

(Open circuit)
  • DCM (Telephone Transceiver Assembly)
  • Telephone and GPS antenna assembly (No. 1 amplifier antenna assembly)
  • Telephone and GPS antenna cord (No. 4 antenna cord sub-assembly)
  • Telephone and GPS antenna cord (No. 3 antenna cord sub-assembly)
  • Telephone and GPS antenna cord (antenna cord sub-assembly)
  • Telephone and GPS antenna cord (No. 2 antenna cord sub-assembly)

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

  • Before performing this diagnostic procedure, make sure to perform Health Check and confirm that the DCM/VIN registration information is correct.

    Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: HEALTH CHECK

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

    Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: PARTS LOCATION

PROCEDURE

1.

CHECK DTC

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

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

(d) Turn the Techstream on.

(e) Clear the DTCs.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: DTC CHECK / CLEAR

Body Electrical > Telematics > Clear DTCs

(f) Recheck for DTCs.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: DTC CHECK / CLEAR

Body Electrical > Telematics > Trouble Codes

Result

Proceed to

DTC B1573 or B15CB is output

A

DTC B1573 or B15CB is not output

B
B

CHECK FOR INTERMITTENT PROBLEMS

A

2.

INSPECT TELEPHONE AND GPS ANTENNA ASSEMBLY (NO. 1 AMPLIFIER ANTENNA ASSEMBLY)

(a) Remove the telephone and GPS antenna assembly (No. 1 amplifier antenna assembly).

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; AUDIO / VIDEO: AMPLIFIER ANTENNA: REMOVAL

*a

Component without harness connected

(Telephone and GPS Antenna Assembly (No. 1 Amplifier Antenna Assembly))

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

4 - 4a

Always

4 to 11 kΩ
NG

REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY (NO. 1 AMPLIFIER ANTENNA ASSEMBLY)

OK

3.

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

(a) Disconnect the telephone and GPS antenna cord (No. 4 antenna cord sub-assembly) from the telephone and GPS antenna assembly (No. 1 amplifier antenna assembly) connector.

*a

Front view of wire harness connector

(to Telephone and GPS Antenna Assembly (No. 1 Amplifier Antenna Assembly))

*b

Front view of wire harness connector

(to Telephone and GPS Antenna Cord (No. 3 Antenna Cord Sub-assembly))

(b) Disconnect the telephone and GPS antenna cord (No. 4 antenna cord sub-assembly) from the telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A-4 - B-2

Always

Below 1 Ω

A-4a - B-2a

Always

Below 1 Ω

A-4 or B-2 - Body ground

Always

10 kΩ or higher
NG

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

OK

4.

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

(a) Disconnect the telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) from the telephone and GPS antenna cord (No. 4 antenna cord sub-assembly) connector.

*a

Front view of wire harness connector

(to Telephone and GPS Antenna Cord (No. 4 Antenna Cord Sub-assembly))

*b

Front view of wire harness connector

(to Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly))

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

B-2 - C-2

Always

Below 1 Ω

B-2a - C-2a

Always

Below 1 Ω

B-2 or C-2 - Body ground

Always

10 kΩ or higher
NG

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

OK

5.

CHECK TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY)

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

*a

Front view of wire harness connector

(to Telephone and GPS Antenna Cord (No. 3 Antenna Cord Sub-assembly))

*b

Front view of wire harness connector

(to Telephone and GPS Antenna Cord (No. 2 Antenna Cord Sub-assembly))

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C-2 - E-2

Always

Below 1 Ω

C-2a - E-2a

Always

Below 1 Ω

C-2 or E-2 - Body ground

Always

10 kΩ or higher
NG

REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY) 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; CELLULAR COMMUNICATION: TELEPHONE AND GPS ANTENNA (for Instrument Panel): REMOVAL 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; CELLULAR COMMUNICATION: TELEPHONE AND GPS ANTENNA (for Instrument Panel): REMOVAL

OK

6.

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

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

*a

Front view of wire harness connector

(to Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly))

*b

Front view of wire harness connector

(to DCM (Telephone Transceiver Assembly))

(b) Disconnect the telephone and GPS antenna cord (No. 2 antenna cord sub-assembly) from the DCM (Telephone Transceiver Assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

E-2 - F-1

Always

Below 1 Ω

E-2a - F-1a

Always

Below 1 Ω

E-2 or F-1 - Body ground

Always

10 kΩ or higher
NG

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

OK

7.

CHECK TELEPHONE AND GPS ANTENNA ASSEMBLY (NO. 1 AMPLIFIER ANTENNA ASSEMBLY)

(a) Replace the telephone and GPS antenna assembly (No. 1 amplifier antenna assembly) with a known good one and check if the same problem occurs again.

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; CELLULAR COMMUNICATION: TELEPHONE AND GPS ANTENNA CORDS (for Roof Side): REMOVAL

(b) Clear the DTCs.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: DTC CHECK / CLEAR

Body Electrical > Telematics > Clear DTCs

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

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: DTC CHECK / CLEAR

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

OK

END
NG

8.

REPLACE DCM (TELEPHONE TRANSCEIVER ASSEMBLY)

(a) Replace the DCM (Telephone Transceiver Assembly).

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL

NOTICE:

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

PERFORM DCM ACTIVATION