Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Telematics Transceiver Missing Message (B15DB87)

DESCRIPTION

When the radio and display receiver assembly cannot detect the telematics transceiver, this DTC will be stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

Priority

B15DB87

Telematics Transceiver Missing Message

When 90 seconds has elapsed after turning the ignition switch to ON and the telematics transceiver cannot be detected, the telematics transceiver is judged to be disconnected after comparison with the past USB connected devices information.

(2 trip detection logic)

  • Telematics transceiver
  • Radio and display receiver assembly
  • Harness or connector

Navigation System

A

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • When replacing the telematics transceiver, make sure to replace it with a new one.
  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed.

    Click here

HINT:

  • The Telematics System performs communication between devices via USB communication. If a malfunction such as a short in a communication line, short to +B or short to ground occurs in the USB circuit, communication will stop and the Telematics System will not operate correctly.
  • This DTC may be stored due to environmental reasons such as electrical noise or interference.

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - POWER SOURCE AND BODY GROUND)

(a) Disconnect the I200 telematics transceiver connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I200-20 (E) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

I200-1 (+B) - I200-20 (E)

IG OFF

11 to 14 V

I200-19 (IG2) - I200-20 (E)

IG ON

11 to 14 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.

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

(a) Disconnect the I253 radio and display receiver assembly connector.

(b) Disconnect the I200 telematics transceiver connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I253-18 (USBV) - I200-15 (USBV)

Always

Below 1 Ω

I253-17 (USBG) - I200-31 (USBG)

Always

Below 1 Ω

I253-18 (USBV) - Body ground

Always

10 kΩ or higher

I253-17 (USBG) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY (USBV, USBG)

(a) With the radio and display receiver assembly connectors connected, disconnect the I200 telematics transceiver connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I200-31 (USBG) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

I200-15 (USBV) - I200-31 (USBG)

IG ON

4.75 to 5.25 V

NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

OK

4.

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

(a) Disconnect the t5 radio and display receiver assembly connector.

*a

Front view of wire harness connector

(to Telematics Transceiver)

*b

Front view of wire harness connector

(to Radio and Display Receiver Assembly)

(b) Disconnect the t1 telematics transceiver connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

t1-2 (USB+) - t5-1 (USB+)

Always

Below 1 Ω

t1-1 (USB-) - t5-2 (USB-)

Always

Below 1 Ω

t1-3 (USBS) - t5-3 (USBS)

Always

Below 1 Ω

t1-2 (USB+) - Body ground

Always

10 kΩ or higher

t1-1 (USB-) - Body ground

Always

10 kΩ or higher

t1-3 (USBS) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.

INSPECT TELEMATICS TRANSCEIVER

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

Click here

NEXT

6.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Navigation System > Clear DTCs
NEXT

7.

CHECK FOR DTC

(a) Turn the ignition switch off.

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

(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.

Body Electrical > Navigation System > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTCs are output

B

A

END (TELEMATICS TRANSCEIVER IS DEFECTIVE)

B

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

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