Subaru Crosstrek Service Manual: Dtc u0073 control module communication bus off
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF
NOTE:
For the diagnostic procedure, refer to LAN section. Basic Diagnostic Procedure">
1. OUTLINE OF DIAGNOSIS
Detect malfunction of CAN communication.
Judge as NG when CAN communication failure has occurred.
2. COMPONENT DESCRIPTION
(Common Specifications)
CAN Protocol 2.0 B (Active)
Frame Format: 11 Bit ID Frame (Standard Frame)
Conforms to ISO11898
Communication Speed: 500 kbps
3. EXECUTION CONDITION
Secondary Parameters | Execution condition |
Battery voltage | ≥ 10.9 V |
4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously after starting the engine.
5. DIAGNOSTIC METHOD
Judge as NG when the following conditions are established.
Malfunction Criteria | Threshold Value |
CAN bus condition | Bus off |
Time Needed for Diagnosis: 436 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
Dtc u0423 invalid data received from instrument panel cluster control module
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULENOTE:For the diagnostic procedure, re ...
Dtc p0128 coolant thermostat (engine coolant temperature below thermostat regulating temperature)
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0128 COOLANT THERMOSTAT (ENGINE COOLANT TEMPERATURE BELOW THERMOSTAT REGULATING TEMPERATURE)DTC detecting co ...
Other materials:
Dtc b2a03 gps antenna circuit
TELEMATICS SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B2A03 GPS ANTENNA CIRCUITDiagnosis start condition:When ignition switch is ON.DTC detecting condition:Any of the followings continues for 5 seconds or more.• GPS antenna impedance is more than 1 M?. ...
Dtc b2a0e mute line circuit
TELEMATICS SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B2A0E MUTE LINE CIRCUITDiagnosis start condition:When ignition switch is ON.DTC detecting condition:Any of the following conditions occurs continuously for five seconds or more after the ignition switch i ...
Caution
CRUISE CONTROL SYSTEM (DIAGNOSTICS) > General DescriptionCAUTIONAirbag system wiring harness is routed near the cruise control command switch.CAUTION:• Do not use the electrical test equipment on the airbag system wiring harnesses and connector circuits.• Be careful not to damage the ...
