Subaru Crosstrek Service Manual: Dtc b1571 reference code incompatibility (immobilizer cm to ecm)
KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
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.
| STEP | CHECK | YES | NO |
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
KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B1577 IMM CONTROL MODULE EEPROM1. EXCEPT FOR C0 AND C5 MODELSDTC detecting co ...
Dtc u0155 lost communication with instrument panel cluster (ipc) control module
KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULEDe ...
Other materials:
Dtc u0416 invalid data received from vehicle dynamics control module
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULEThis is detected when CAN data from VDC is abnormal.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDU ...
Inspection
FUEL INJECTION (FUEL SYSTEMS)(H4DO) > Throttle BodyINSPECTION1. THROTTLE SENSOR (METHOD WITH CIRCUIT TESTER)1. Remove the glove box. Glove Box > REMOVAL">2. Turn the ignition switch to ON. (engine OFF)3. Measure the voltage between ECM connector terminals.(A)To ECM connector Thrott ...
Removal
DRIVE SHAFT SYSTEM > Front Hub Unit BearingREMOVAL1. Lift up the vehicle, and then remove the front wheels.2. Remove the axle nut.CAUTION:Do not loosen the axle nut while the front axle is loaded. Doing so may damage the hub unit bearing.(1) Lift the crimped section of axle nut.(2) Remove the axl ...
