Subaru Crosstrek Service Manual: 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.
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.
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Other materials:
Double trip meter
Type A
Trip knob
Type B
Trip knob (U.S.-spec. models)
Trip knob (except U.S.-spec. models)
This meter displays the two trip meters
when the ignition switch is in the "ON"
position.
The trip meter shows the distance that the
vehicle has been driven since you last set
it to ...
Fuses
CAUTION
Never replace a fuse with one having
a higher rating or with material
other than a fuse because serious
damage or a fire could result.
The fuses are designed to melt during an
overload to prevent damage to the wiring
harness and electrical equipment. The
fuses are located in two fuse ...
Disassembly
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