AUTO HEADLIGHT BEAM LEVELER SYSTEM (DIAGNOSTICS) > Subaru Select Monitor
INSPECTION
1. COMMUNICATION FOR INITIALIZING IMPOSSIBLE
Communication error with auto headlight beam leveler CM
Detecting condition:
• Defective harness connector
• Power supply circuit malfunction
• Defective auto headlight beam leveler CM
• Defective CAN communication circuit
• Defective Subaru Select Monitor
Trouble symptom:
Communication is impossible between auto headlight beam leveler CM and Subaru Select Monitor.
CAUTION:
Initialization is required after replacing the auto headlight beam leveler CM.
Wiring diagram:
Headlight beam leveler system Headlight Beam Leveler System > WIRING DIAGRAM">

| STEP | CHECK | YES | NO |
1.CHECK OTHER COMMUNICATION.
Communicate with the system other than the auto headlight beam leveler CM using the Subaru Select Monitor.
Is the communication to other control module possible?
Subaru Select Monitor > INSPECTION">Go to Step 2.
Perform the “Communication for Initializing Impossible” of LAN system. Subaru Select Monitor > COMMUNICATION FOR INITIALIZING IMPOSSIBLE">
2.CHECK LAN SYSTEM.
Inspect LAN system. Basic Diagnostic Procedure > PROCEDURE">
Is there any fault?
Perform the inspection according to the diagnosis for LAN system.
Subaru Select Monitor > INSPECTION">Go to Step 3.
3.CHECK FOR POOR CONTACT.
1) Turn the ignition switch to OFF.
2) Disconnect the auto headlight beam leveler CM connector.
3) Connect the disconnected connectors.
4) Communicate with the auto headlight beam leveler CM using the Subaru Select Monitor.
Is communication possible?
It is possible that temporary poor communication occurs.
Replace the auto headlight beam leveler CM. Auto Headlight Beam Leveler Control Module">
OperationRemoval
HVAC SYSTEM (HEATER, VENTILATOR AND A/C) > EvaporatorREMOVALCAUTION:Before handling the airbag system components, refer to “CAUTION” of “General Description” in “AIRBAG SYSTEM”. General Description > CAUTION">1. Disconnect the ground cable from batt ...
Dtc b1431 in-vehicle (post evaporator) temperature sensor circuit short-circuit
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B1431 IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUITDTC detecting condition:In-vehicle sensor circuit is shorted.Trouble symptom:In-vehicle air temperature is falsely recognize ...
List of diagnostic trouble code (dtc) List
INSTRUMENTATION/DRIVER INFO (DIAGNOSTICS) > List of Diagnostic Trouble Code (DTC)LISTDTCItemContentReferenceU0073CONTROL MODULE COMMUNICATION BUS OFFDetected when CAN line abnormality is detected. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0073 CONTROL MODULE COMMUNICATION ...