Subaru Crosstrek Service Manual: Dtc u0073 control module communication bus off
CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF
NOTE:
Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. Basic Diagnostic Procedure">
1. OUTLINE OF DIAGNOSIS
• Detect malfunction of CAN communication.
• Judge as NG when CAN communication failure has occurred.
2. EXECUTION CONDITION
Secondary Parameters | Execution condition |
12 V battery system voltage | ≥ 10 V |
Measured turbine shaft speed | > 0 rpm |
or | |
Transmission range | Drive or Reverse |
3. DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Malfunction Criteria | Threshold Value |
CAN bus condition | Bus off |
Time Needed for Diagnosis: 2 seconds
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
Dtc u0424 invalid data received from hvac control module
CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0424 INVALID DATA RECEIVED FROM HVAC CONTROL MODULENOTE:Refer to “LAN SYSTEM (DI ...
Dtc u1235 lost communication with eyesight
CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U1235 LOST COMMUNICATION WITH EyeSightNOTE:Refer to “LAN SYSTEM (DIAGNOSTICS)&rdq ...
Other materials:
Removal
MECHANICAL(H4DO) > Cylinder BlockREMOVAL1. Remove the engine from the vehicle. Engine Assembly > REMOVAL">2. Remove the intake manifold. Intake Manifold > REMOVAL">3. Remove the engine wiring harness. Engine Wiring Harness > REMOVAL">4. Remove the tumble genera ...
Electrical specification
EyeSight (DIAGNOSTICS) > Control Module I/O SignalELECTRICAL SPECIFICATION1. STEREO CAMERATerminal No.ContentMeasuring conditionStandard(R137) No. 1 — — — (R137) No. 2 — — — (R137) No. 3 — — — (R137) No. 4 — — — (R137) No. 5 — — — (R137) No. 6 ←> Ch ...
Inspection
FUEL INJECTION (FUEL SYSTEMS)(H4DO) > Tumble Generator Valve AssemblyINSPECTION1. CHECK MOTOR1. Connect the battery positive terminal to terminal No. 5 and the battery ground terminal to terminal No. 4, and check that the valve is fully opened on LH side and the valve is fully closed on RH side.C ...
