Subaru Crosstrek Service Manual: Dtc b1571 reference code incompatibility (immobilizer cm to ecm)

DTC detecting condition:

Incompatibility of reference code between keyless access CM (model without ID code box) or ID code box (model with ID code box) and ECM occurs.

Trouble symptom:

Engine will not start.

1.CHECK ECM.

Perform ECM registration. Refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

Is ECM registration finished? And does the engine start?

ECM registration was not performed properly.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1571 REFERENCE CODE INCOMPATIBILITY (IMMOBILIZER CM TO ECM)">Go to Step 2.

2.REPLACE ECM.

1) Install the ECM from other normal operating vehicle (with push button start) which use same ECM to the vehicle to be diagnosed.

2) Perform ECM registration. Refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

Is ECM registration finished? And does the engine start?

Replace the ECM. Engine Control Module (ECM) > REMOVAL"> Install the ECM from other vehicle to the original vehicle.

Replace Keyless access CM (model without ID code box), Keyless Access CM"> or replace ID code box (model with ID code box). ID Code Box">

Dtc b1577 imm control module eeprom

Dtc u0155 lost communication with instrument panel cluster (ipc) control module

Other materials:

Removal
LIGHTING SYSTEM > Clearance/Parking Light BulbREMOVAL1. Disconnect the ground cable from battery. NOTE">2. Turn the steering wheel in the opposite direction from the parts to be removed. Then remove the clips and turn over the mud guard - front.3. Remove the bulb socket and parking light ...

Dtc u0155 lost communication with instrument panel cluster (ipc) control module
EyeSight (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULEDetected when CAN data from combination meter is not transmitted to stereo camera.NOTE:Perform the diagnosis for LAN system. Basic Diagno ...

Washing
CAUTION When washing the vehicle, the brakes may get wet. As a result, the brake stopping distance will be longer. To dry the brakes, drive the vehicle at a safe speed while lightly depressing the brake pedal to heat up the brakes. Do not wash the engine compartment and area ad ...