Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001KJD3
Model Year Start: 2020 Model: RAV4 Prod Date Range: [10/2019 - 08/2020]
Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: B15DB; Telematics Transceiver Disconnected; 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]

DTC

B15DB

Telematics Transceiver Disconnected

DESCRIPTION

If the radio and display receiver assembly cannot detect the DCM (telematics transceiver) for a certain period of time (90 seconds) after the ignition switch is turned to ON and the radio and display receiver assembly confirms that the information is missing by checking past DCM (telematics transceiver) recognition information (registered information), this DTC will be stored.

The telematics system uses USB communication between devices. If an open, short, short to +B or short to ground occurs in the USB circuit, communication is interrupted and the telematics system will not operate normally.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15DB

Telematics Transceiver Disconnected

DCM (telematics transceiver) disconnected
  • DCM (telematics transceiver)
  • DCM (telematics transceiver) power source circuit
  • Radio and display receiver assembly
  • Navigation ECU
  • Telephone ECU wire (to transceiver)
  • Harness or connector

HINT:

This DTC may be stored due to environmental reasons such as electrical noise or interference.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the radio and display receiver assembly or navigation ECU, always replace it with a new one. If a radio and display receiver assembly or navigation ECU which was installed to another vehicle is used, the following may occur:
    • A communication malfunction DTC may be stored.
    • The radio and display receiver assembly or navigation ECU may not operate normally.
  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • Before replacing the DCM (telematics transceiver), refer to Registration.

    for Gasoline Model: Click here 2020 MY RAV4 [10/2019 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

    for HV Model: Click here 2020 - 2021 MY RAV4 HV [10/2019 - 12/2021]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION

  • When replacing the DCM (telematics transceiver), make sure to replace it with a new one.

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 Navigation System.

Click here 2020 - 2022 MY RAV4 RAV4 HV [10/2019 - 10/2022]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: PRECAUTION

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs.

Click here 2020 - 2022 MY RAV4 RAV4 HV [10/2019 - 10/2022]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: DTC CHECK / CLEAR

Body Electrical > Navigation System > Clear DTCs

(b) Turn the ignition switch off.

(c) Turn the ignition switch to ON and wait for 90 seconds.

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

Click here 2020 - 2022 MY RAV4 RAV4 HV [10/2019 - 10/2022]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: DTC CHECK / CLEAR

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

CHECK HARNESS AND CONNECTOR (DCM [TELEMATICS TRANSCEIVER] POWER SOURCE)

(a) Disconnect the DCM (telematics transceiver) connector.

*a

Front view of wire harness connector

(to DCM [Telematics Transceiver])

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G131-20 (E) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

G131-1 (+B) - G131-20 (E)

Ignition switch off

11 to 14 V

G131-19 (IG2) - G131-20 (E)

Ignition switch ON

11 to 14 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - DCM [TELEMATICS TRANSCEIVER])

(a) Disconnect the G1 radio and display receiver assembly connector.

(b) Disconnect the G131 DCM (telematics transceiver) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G1-10 (USBV) - G131-15 (USBV)

Always

Below 1 Ω

G1-11 (USBG) - G131-31 (USBG)

Always

Below 1 Ω

G1-10 (USBV) or G131-15 (USBV) - Body ground

Always

10 kΩ or higher

G1-11 (USBG) or G131-31 (USBG) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

4.

INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY

(a) Disconnect the radio and display receiver assembly connector.

*a

Component without harness connected

(Radio and Display Receiver Assembly)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G1-11 (USBG) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

G1-10 (USBV) - G1-11 (USBG)

Ignition switch ON

4.75 to 5.25 V
NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

OK

5.

INSPECT TELEPHONE ECU WIRE (TO TRANSCEIVER) (DCM [TELEMATICS TRANSCEIVER] - NAVIGATION ECU)

(a) Disconnect the telephone ECU wire (to Transceiver) connector from the DCM (telematics transceiver).

*a

Front view of wire harness connector

(to DCM [Telematics Transceiver])

*b

Front view of wire harness connector

(to Navigation ECU)

(b) Disconnect the telephone ECU wire (to Transceiver) connector from the navigation ECU.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G134-2 (USB+) - G124-1 (USB+)

Always

Below 1 Ω

G134-1 (USB-) - G124-2 (USB-)

Always

Below 1 Ω

G134-3 (USBS) - G124-3 (USBS)

Always

Below 1 Ω

G134-2 (USB+) or G124-1 (USB+) - Body ground

Always

10 kΩ or higher

G134-1 (USB-) or G124-2 (USB-) - Body ground

Always

10 kΩ or higher

G134-3 (USBS) or G124-3 (USBS) - Body ground

Always

10 kΩ or higher
NG

REPLACE TELEPHONE ECU WIRE (TO TRANSCEIVER)

OK

6.

CHECK DCM (TELEMATICS TRANSCEIVER)

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

Click here 2020 - 2022 MY RAV4 RAV4 HV [10/2019 - 10/2022]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL

(b) Clear the DTCs.

Click here 2020 - 2022 MY RAV4 RAV4 HV [10/2019 - 10/2022]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: DTC CHECK / CLEAR

Body Electrical > Navigation System > Clear DTCs

(c) Turn the ignition switch off.

(d) Turn the ignition switch to ON and wait for 90 seconds.

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

Click here 2020 - 2022 MY RAV4 RAV4 HV [10/2019 - 10/2022]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: DTC CHECK / CLEAR

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

OK

END (DCM [TELEMATICS TRANSCEIVER] IS DEFECTIVE)
NG

7.

CHECK NAVIGATION ECU

(a) Replace the navigation ECU with a new one.

Click here 2020 - 2022 MY RAV4 RAV4 HV [10/2019 - 10/2022]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION ECU: REMOVAL

(b) Clear the DTCs.

Click here 2020 - 2022 MY RAV4 RAV4 HV [10/2019 - 10/2022]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: DTC CHECK / CLEAR

Body Electrical > Navigation System > Clear DTCs

(c) Turn the ignition switch off.

(d) Turn the ignition switch to ON and wait for 90 seconds.

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

Click here 2020 - 2022 MY RAV4 RAV4 HV [10/2019 - 10/2022]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: DTC CHECK / CLEAR

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

OK

END (NAVIGATION ECU IS DEFECTIVE)
NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY