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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Dtc u0122 lost communication with vehicle dynamics control module
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Other materials:
When starting the engine
To start the engine with remote engine
start system, briefly press the lock button
twice within 2 seconds, then press and
hold the lock button for 3 seconds.
1. Press the lock button briefly. The
hazard warning flashers then flash once
and the keyless buzzer chirps once.
2. Within 2 secon ...
How to change the source
The Pandora operation screen can be
reached by the following methods:
Connecting a Pandora device. Refer to
"Connecting a Bluetooth device" F5-68 or
"Connecting and disconnecting a USB
memory/portable device" F5-17.
Select the "Pandora" key on the source
select screen. Refer to "Selec ...
Dtc u0122 lost communication with vehicle dynamics control module
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