Subaru Crosstrek Service Manual: Dtc b1574 key communication

DTC DETECTING CONDITION:

Communication failure between key and body integrated unit

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 IGNITION KEY.

1) Remove the ignition key from the ignition switch.

2) Insert the ignition key into the ignition switch, and then turn the ignition switch to ON.

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 B1410 detected?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1574 KEY COMMUNICATION">Go to Step 2.

Even if DTC is detected, 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.

2.CHECK IGNITION KEY.

1) Prepare a spare ignition key that is already registered.

2) Insert the ignition key into the ignition switch, and then turn the ignition switch to ON.

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 B1410 detected?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1574 KEY COMMUNICATION">Go to Step 3.

Ignition key unit was defective.

3.CHECK IMMOBILIZER ANTENNA.

1) Replace the immobilizer antenna. Immobilizer Antenna">

2) Insert the ignition key into the ignition switch, and then turn the ignition switch to ON.

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 B1410 detected?

Replace the body integrated unit. Body Integrated Unit">

Immobilizer antenna was defective.

Dtc b1572 imm circuit except antenna circuit

Dtc b1575 incorrect immobilizer key

Other materials:

Dtc c0021 front right abs sensor circuit open or short
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC C0021 FRONT RIGHT ABS SENSOR CIRCUIT OPEN OR SHORTNOTE:For the diagnostic procedure, refer to “DTC C0027 REAR LEFT ABS SENSOR CIRCUIT OPEN OR SHORT”. Diagnostic Procedure with Di ...

Removal
LIGHTING SYSTEM > Front Fog Light AssemblyREMOVAL1. Disconnect the ground cable from battery. NOTE">2. Lift up the vehicle.3. Remove the screw and clips, and turn over the front side of the mud guard - front.4. From the bottom of the bumper face - front, remove the fog light assembly - f ...

Dtc c2532 control module peripheral circuit
POWER ASSISTED SYSTEM (POWER STEERING) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC C2532 CONTROL MODULE PERIPHERAL CIRCUITTROUBLE SYMPTOM:• The steering wheel operation feels heavy.• STEERING warning light illuminates.WIRING DIAGRAM:Electric power steeri ...