Subaru Crosstrek Service Manual: Dtc u0100 lost communication with ecm/pcm a
CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0100 LOST COMMUNICATION WITH ECM/PCM “A”
NOTE:
Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedures. Basic Diagnostic Procedure">
1. OUTLINE OF DIAGNOSIS
• Detect malfunction of CAN communication.
• Judge as NG when CAN communication failure occurs with the ECM.
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 data from ECM | Lost |
Time Needed for Diagnosis: 0.5 seconds
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
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Other materials:
To hook the top tether
CAUTION
Except for the center seating
position, remove the head restraint
when mounting a child
restraint system. Otherwise, it
might be possible that the top
tether cannot be fastened tightly.
For the center seating position,
raise the center head restraint to
the extended posit ...
Basic operation
This section describes some of the basic
features of the audio/visual system. Some
information may not pertain to your system.
Your audio/visual system works when the
ignition switch is turned to the "ACC" or
"ON" position.
CAUTION
To prevent the battery from being
discharged, do not leave ...
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