ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE
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 between TCM, VDC CM and combination meter 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 data from vehicle dynamics control module | = Lost |
Time Needed for Diagnosis: 500 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
Function check Operation
BODY CONTROL SYSTEM (DIAGNOSTICS) > Function CheckOPERATIONNOTE:In order to check the body integrated unit function, inspect the body integrated unit and actuator using Subaru Select Monitor without operating switches.1. On «Start» display, select «Diagnosis».2. On «Vehicle selection» displ ...
Dtc u0122 lost communication with vehicle dynamics control module
TELEMATICS SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULEDetected when CAN data from VDC does not arrive.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE"> ...
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CRUISE CONTROL SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Cancel Code61Malfunction in the stop light & brake switch is detected.TROUBLE SYMPTOM:• Cruise control cannot be set.• Cruise control cannot be released.Refer to DTC 12 for diagnostic procedure. Diagnostic Procedure w ...