Subaru Crosstrek Service Manual: Dtc u0100 lost communication with ecm/pcm a

Detected when CAN data from the engine control module (ECM) does not arrive.

NOTE:

Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE">

Diagnostic procedure with diagnostic trouble code (dtc)

Dtc b2222 system microcomputer fail

Other materials:

Bulkhead wiring harness (in engine compartment) Location
WIRING SYSTEM > Bulkhead Wiring Harness (In Engine Compartment)LOCATIONConnectorConnecting toNo.PoleColorAreaNo.DescriptionB35BlackB-2 Mass air flow and intake air temperature sensorB62Light grayC-3 Front ABS wheel speed sensor RHB85Light grayB-5 Front wiper motorB104Light grayC-4 Pressure switch ...

Inspection
WIPER AND WASHER SYSTEMS > Front Wiper Motor and LinkINSPECTION1. Check that the following operations perform normally.CAUTION:Fix the motor to prevent the motor from being shorted by moving during operation.(1) When the battery is connected to the terminal of connectors, confirm that the motor o ...

Preparation for overhaul Procedure
MECHANICAL(H4DO) > Preparation for OverhaulPROCEDURE1. After removing the engine from the vehicle body, attach the ST to the engine as shown in the figure.NOTE:When using a commercially sold engine stand, follow the instructions of engine stand used.Tightening torque:35 N·m (3.6 kgf-m, 25. ...