Subaru Crosstrek Service Manual: Dtc u0122 lost communication with vehicle dynamics control module

Subaru Crosstrek Service Manual / Engine (diagnostics)(h4do) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0122 lost communication with vehicle dynamics control module

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.

Judgment Value

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.

Dtc p0560 system voltage

ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0560 SYSTEM VOLTAGEDTC DETECTING CONDITION:Immediately at fault recognitionCAUTION:After servicing or replac ...

Dtc p000a "a" camshaft position slow response bank 1

ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P000A "A" CAMSHAFT POSITION SLOW RESPONSE BANK 1NOTE:For the diagnostic procedure, refer to DTC P00 ...

Other materials:

Diagnostic procedure with phenomenon
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) > Diagnostics with PhenomenonDIAGNOSTIC PROCEDURE WITH PHENOMENON1. NOTHING IS DISPLAYED ON THE SCREEN. NO ILLUMINATION APPEARS ON THE INDICATORTrouble symptom:• When the AUTO button is pressed with IGN ON, nothing is displayed on the screen or indicator ...

Read cancel code Operation
CRUISE CONTROL SYSTEM (DIAGNOSTICS) > Read Cancel CodeOPERATION1. On «Start» display, select «Diagnosis».2. On «Vehicle selection» display, input the target vehicle information and select «Confirmed».3. On «Main Menu» display, select «Each System».4. On «Select System» display, sele ...

Storage compartment
CAUTION Always keep all storage compartments in the Subaru Ascent closed while driving to reduce the risk of injury during sudden braking or collisions. Do not store flammable, pressurized, or corrosive materials such as aerosol cans or chemical containers in any storage compartment. ...