Subaru Crosstrek Service Manual: Dtc u0424 invalid data received from hvac control module

Subaru Crosstrek Service Manual / Continuously variable transmission (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0424 invalid data received from hvac control module

CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC U0424 INVALID DATA RECEIVED FROM 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 data received from the A/C control panel is not normal.

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.

Judgment Value

Malfunction Criteria	Threshold Value
CAN data from A/C control panel	Freeze

Time Needed for Diagnosis: 2 seconds

Malfunction Indicator Light Illumination: Does not illuminate.

Dtc u0423 invalid data received from instrument panel cluster control module

CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULENOTE:Refer to & ...

Dtc u0073 control module communication bus off

CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0073 CONTROL MODULE COMMUNICATION BUS OFFNOTE:Refer to “LAN SYSTEM (DIAGNOSTICS) ...

Other materials:

Inspection
TELEMATICS SYSTEM (DIAGNOSTICS) > Subaru Select MonitorINSPECTION1. COMMUNICATION FOR INITIALIZING IMPOSSIBLEWhen communication with DCM is impossibleDetecting condition:• Defective harness connector• Power supply circuit malfunction• Defective DCM• Defective CAN communica ...

Installation
SEAT BELT SYSTEM > Front Seat BeltINSTALLATION1. SEAT BELT OUTER - FRONTCAUTION:• The parts of the driver and passenger sides are not the same. Before installation, make sure that the correct part is used.• During installation, make sure that the seat belts are not twisted.• Aft ...

Dtc p0451 evap system (cpc) pressure sensor/switch circuit range/performance
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0451 EVAP SYSTEM (CPC) PRESSURE SENSOR/SWITCH CIRCUIT RANGE/PERFORMANCEDTC detecting condition:Detected when two consecutive driving cycles with fault occur.CAUTION:After servicing or replacing faulty parts, ...