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

Subaru Legacy Service Manual / Eyesight (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0100 lost communication with ecm/pcm "a"

Detected when CAN data from engine control module (ECM) is not transmitted to stereo camera.

NOTE:

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

Dtc u0428 invalid data received from steering angle sensor module

Failure counter diagnosis of steering angle sensorNOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Dtc u0073 control module communication bus off

Detected when an error occurs in the CAN line. (Bus off)NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Other materials:

Inspection
1. Check that the electronic throttle control relay has no deformation, cracks or other damages.2. Measure the resistance between electronic throttle control relay terminals.Terminal No.Standard1 and 21 M- or more3 and 4130.4 — 230.8 - (when 20°C (68°F))3. Connect battery positive te ...