Subaru Crosstrek Service Manual: Dtc u0164 lost communication with hvac control module
CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0164 LOST COMMUNICATION WITH HVAC CONTROL MODULE
NOTE:
Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. Basic Diagnostic Procedure">
1. OUTLINE OF DIAGNOSIS
• Detect malfunction of CAN communication.
• Judge as NG when CAN communication failure occurs with the A/C control panel.
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 A/C control panel | Lost |
Time Needed for Diagnosis: 2 seconds
Malfunction Indicator Light Illumination: Does not illuminate.
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Other materials:
Brake system warning light (red)
The
light illuminates with the parking
brake applied while the ignition switch is
in the "ON" position. It turns off when the
parking brake is fully released.
WARNING
Driving with the brake system
warning light on is dangerous.
This indicates your brake system
may not be working ...
Ventilator control
Center and side ventilators
Center ventilators
Open
Close
Side ventilators
Open
Close
To adjust the flow direction, move the tab.
To open or close the ventilator, turn the
thumb-wheel up or down. ...
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