Subaru Crosstrek Service Manual: 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.

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

Dtc b1572 imm circuit except antenna circuit

Other materials:

Loading a disc
CAUTION Never try to disassemble the audio kit or lubricate any part of the CD player. Do not insert anything other than a disc into the slot. Insert a disc into the disc slot. After insertion, the disc is automatically loaded. NOTE When inserting a disc, gently insert it with the label ...

SRS airbag (Supplemental Restraint System airbag)
*SRS: This stands for supplemental restraint system. This name is used because the airbag system supplements the vehicle's seatbelts. Your vehicle is equipped with a supplemental restraint system in addition to a lap/shoulder belt at each front seating position and each rear window-side sea ...

SRS airbag system servicing
WARNING When discarding an airbag module or scrapping the entire vehicle damaged by a collision, consult your SUBARU dealer. The SRS airbag has no userserviceable parts. Do not use electrical test equipment on any circuit related to the SRS airbag system. For required servicing o ...