Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Dtc b1570 antenna

IMMOBILIZER (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC B1570 ANTENNA

DTC detecting condition:

Faulty antenna

CAUTION:

When the body integrated unit is replaced, registration of the immobilizer system is required. For details, refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

Wiring diagram:

Immobilizer system Immobilizer System > WIRING DIAGRAM">

STEPCHECKYESNO

1.CHECK BODY INTEGRATED UNIT POWER SUPPLY CIRCUIT.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from body integrated unit.

3) Measure the voltage between the body integrated unit connector terminal and chassis ground.

Connector & terminal

(i84) No. 6 (+) — Chassis ground (−):

Is the voltage 10 V or more?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1570 ANTENNA">Go to Step 2.

Check the harness for open or short circuit between body integrated unit and fuse.

2.CHECK BODY INTEGRATED UNIT GROUND CIRCUIT (OPEN CIRCUIT).

Measure the resistance between the body integrated unit connector terminal and chassis ground.

Connector & terminal

(B280) No. 1 — Chassis ground:

(i84) No. 1 — Chassis ground:

Is the resistance less than 10 ??

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1570 ANTENNA">Go to Step 3.

Repair the open circuit of the body integrated unit ground circuit.

3.CHECK ANTENNA POWER SUPPLY CIRCUIT.

1) Connect the connector to body integrated unit.

2) Disconnect the connector from the antenna.

3) Insert the ignition key into the key cylinder, then measure the voltage between the antenna connector terminal and the chassis ground.

Connector & terminal

(B415) No. 1 (+) — Chassis ground (−):

Is the voltage 5±0.5 V approx. 200 ms after inserting the ignition key into the key cylinder? And then, does the voltage return to 0 V within 2 s?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1570 ANTENNA">Go to Step 5.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1570 ANTENNA">Go to Step 4.

4.CHECK ANTENNA POWER SUPPLY CIRCUIT (OPEN).

1) Disconnect the connector from body integrated unit.

2) Measure the resistance of body integrated unit connector terminal and antenna connector terminal.

Connector & terminal

(B281) No. 2 — (B415) No. 1:

Is the resistance less than 10 ??

Replace the body integrated unit. Body Integrated Unit">

Repair the harness or connector between body integrated unit and antenna.

5.CHECK ANTENNA GROUND CIRCUIT (SHORT CIRCUIT TO GROUND).

Measure the resistance between antenna connector terminal and chassis ground.

Connector & terminal

(B415) No. 7 — Chassis ground:

Is the resistance less than 10 ??

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1570 ANTENNA">Go to Step 7.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1570 ANTENNA">Go to Step 6.

6.CHECK ANTENNA GROUND CIRCUIT (OPEN).

1) Disconnect the connector from body integrated unit.

2) Measure the resistance between the body integrated unit connector terminal and antenna connector terminal.

Connector & terminal

(B281) No. 30 — (B415) No. 7:

Is the resistance less than 10 ??

Replace the body integrated unit. Body Integrated Unit">

Repair the harness or connector between body integrated unit and antenna.

7.CHECK ANTENNA COMMUNICATION CIRCUIT (OPEN).

Measure the resistance of body integrated unit connector terminal and antenna connector terminal.

Connector & terminal

(B281) No. 10 — (B415) No. 5:

(B281) No. 22 — (B415) No. 4:

Is the resistance less than 10 ??

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1570 ANTENNA">Go to Step 8.

Repair the harness or connector between body integrated unit and antenna.

8.CHECK ANTENNA.

1) Replace the immobilizer antenna. Immobilizer Antenna">

2) Insert the ignition key in the ignition switch. (OFF or ACC)

3) Perform the Clear Memory Mode. Clear Memory Mode">

4) Read the DTC of the body integrated unit. Read Diagnostic Trouble Code (DTC)">

Is DTC B1411 detected?

Replace the body integrated unit. Body Integrated Unit">

Antenna has a failure.

Dtc b1411 immobilizer antenna
IMMOBILIZER (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B1411 IMMOBILIZER ANTENNANOTE:Refer to DTC B1570 for diagnostic procedure. Diagnostic Procedure with Diagnost ...

Dtc b1572 imm circuit except antenna circuit
IMMOBILIZER (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B1572 IMM CIRCUIT EXCEPT ANTENNA CIRCUITDTC detecting condition:Communication failure between body integrated ...

Other materials:

Removal
EXTERIOR/INTERIOR TRIM > Roof TrimREMOVAL1. CROSSTREK MODELCAUTION:• Before handling the airbag system components, refer to “CAUTION” of “General Description” in “AIRBAG SYSTEM”. General Description > CAUTION">• Airbag system satellite s ...

Preparation tool
DRIVE SHAFT SYSTEM > General DescriptionPREPARATION TOOL1. SPECIAL TOOLILLUSTRATIONPART NO.DESCRIPTIONREMARKS20099PA010INSTALLER & REMOVER• Used for replacing the rear bushing of rear axle housing.• Used together with BUSHING REMOVER (20099FG000).20099FG000BUSHING REMOVER• U ...

General description
Caution Blind Spot Detection/Rear Cross Traffic Alert > General DescriptionCAUTION• Before disconnecting connectors of sensors or units, be sure to disconnect the ground cable from battery. When replacing the electrical parts provided with memory functions that store contents specified by ...

© 2016-2025 Copyright www.sucross.com