Subaru Crosstrek Service Manual: Dtc u0401 invalid data received from ecm/pcm a

Subaru Crosstrek Service Manual / Continuously variable transmission (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0401 invalid data received from ecm/pcm a

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

DTC U0401 INVALID DATA RECEIVED FROM 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 data received from ECM 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 ECM	Did not change

Time Needed for Diagnosis: 2 seconds

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

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 MODULENOTE:Refer to “LAN SYSTEM (DIAGN ...

Dtc u0416 invalid data received from vehicle dynamics control module

CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULENOTE:Refer to “LA ...

Other materials:

Dtc b1012 battery backup power supply
BODY CONTROL SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B1012 BATTERY BACKUP POWER SUPPLYDTC detecting condition:Voltage failure caused by poor contact of battery power supply backup circuitsTrouble symptom:Illuminations for the keyless entry, map light, lug ...

General diagnostic table Inspection
BODY CONTROL SYSTEM (DIAGNOSTICS) > General Diagnostic TableINSPECTIONRead the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)"> Or check the following data under the current data display screen. Read Current Data">ItemOperationSpecificationsNoteYESNODiagnost ...

Inspection
SUNROOF/T-TOP/CONVERTIBLE TOP (SUNROOF) > Sunroof MotorINSPECTIONCheck the auto-reverse mechanism.CAUTION:Do not place objects in the way to check the auto-reverse mechanism.1. Open the lid assembly - sunroof.2. Push the lid assembly - sunroof in the opening direction with a force of 110±10 N (1 ...