Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Dtc b27a7 trunk/rear gate internal antenna open

KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC B27A7 TRUNK/REAR GATE INTERNAL ANTENNA OPEN

DTC detecting condition:

When open circuit occurs in the harness between keyless access CM and rear interior antenna.

Trouble symptom:

Keyless access system does not function. (When the access key is in the rear area of the passenger room (within luggage compartment))

CAUTION:

For replacement procedure of keyless access CM, refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

Wiring diagram:

Keyless access system Keyless Access System > WIRING DIAGRAM">

STEPCHECKYESNO

1.CHECK LAN SYSTEM.

Inspect LAN system. Basic Diagnostic Procedure > PROCEDURE">

Is LAN system normal?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B27A7 TRUNK/REAR GATE INTERNAL ANTENNA OPEN">Go to Step 2.

Perform the inspection according to the diagnosis for LAN system.

2.CHECK CONNECTOR.

1) Disconnect the keyless access CM connector.

2) Disconnect the rear interior antenna connector.

Is the connector OK?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B27A7 TRUNK/REAR GATE INTERNAL ANTENNA OPEN">Go to Step 3.

Repair or replace the connector.

3.CHECK HARNESS (OPEN CIRCUIT).

Using a tester, measure the resistance between the keyless access CM connector and rear interior antenna connector, and between rear interior antenna connector, keyless access CM connector and chassis ground.

Connector & terminal

(B573) No. 9 — (R298) No. 1:

(B573) No. 8 — (R298) No. 3:

(B572) No. 11 — Chassis ground:

Is the resistance less than 1 ??

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B27A7 TRUNK/REAR GATE INTERNAL ANTENNA OPEN">Go to Step 4.

Repair or replace the open circuit of harness.

4.CHECK HARNESS (GROUND SHORT CIRCUIT).

Using a tester, measure the resistance between the keyless access CM connector and chassis ground.

Connector & terminal

(B573) No. 9 — Chassis ground:
(B573) No. 8 — Chassis ground:

Is the resistance 10 k? or more?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B27A7 TRUNK/REAR GATE INTERNAL ANTENNA OPEN">Go to Step 5.

Repair or replace the short circuit of the harness.

5.CHECK DTC.

1) Connect the keyless access CM connector.

2) Using the Subaru Select Monitor, clear the memory. Clear Memory Mode">

3) Read DTC using the Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">

Is DTC B27A7 displayed?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B27A7 TRUNK/REAR GATE INTERNAL ANTENNA OPEN">Go to Step 6.

Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

NOTE:

In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

6.CHECK REAR INTERIOR ANTENNA.

1) Replace the rear interior antenna with the front interior antenna. Keyless Access Indoor Antenna">

2) Using the Subaru Select Monitor, clear the memory. Clear Memory Mode">

3) Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">

Is DTC B27A7 displayed?

Replace the keyless access CM. Keyless Access CM">

Malfunction occurred in the rear interior antenna.

Dtc b27a5 front internal antenna open
KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B27A5 FRONT INTERNAL ANTENNA OPENDTC detecting condition:When open circuit oc ...

Dtc b27a8 trunk/rear gate external antenna open
KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B27A8 TRUNK/REAR GATE EXTERNAL ANTENNA OPENDTC detecting condition:When open ...

Other materials:

Engine low oil level warning light
This light illuminates when the engine oil level decreases to the lower limit. If the engine low oil level warning light illuminates while driving, park the vehicle in a safe and level location, and then check the engine oil level. When the engine oil level is not within the normal rang ...

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 ...

Inspection
ENTERTAINMENT > Navigation SystemINSPECTION1. BASIC INSPECTION1. Using the Check List for Interview, ask the customer the condition of how the trouble occurred. Check List for Interview > CHECK">2. Check the battery. Battery > INSPECTION">3. Check the list of Diagnostics w ...

© 2016-2024 Copyright www.sucross.com