Subaru Crosstrek Service Manual: Dtc u0101 lost communication with tcm

Subaru Crosstrek Service Manual / Engine (diagnostics)(h4do) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0101 lost communication with tcm

ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC U0101 LOST COMMUNICATION WITH TCM

NOTE:

For the diagnostic procedure, refer to LAN section. Basic Diagnostic Procedure">

1. OUTLINE OF DIAGNOSIS

Detect malfunction of CAN communication.

Judge as NG when CAN communication failure between TCM, VDC CM and combination meter has occurred.

2. COMPONENT DESCRIPTION

(Common Specifications)

CAN Protocol 2.0 B (Active)

Frame Format: 11 Bit ID Frame (Standard Frame)

Conforms to ISO11898

Communication Speed: 500 kbps

3. EXECUTION CONDITION

Secondary Parameters	Execution condition
Battery voltage	≥ 10.9 V

4. GENERAL DRIVING CYCLE

Perform the diagnosis continuously after starting the engine.

5. DIAGNOSTIC METHOD

Judge as NG when the following conditions are established.

Judgment Value

Malfunction Criteria	Threshold Value
CAN data from TCM	= Lost

Time Needed for Diagnosis: 500 ms

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

Dtc p1531 battery current sensor circuit high

ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P1531 BATTERY CURRENT SENSOR CIRCUIT HIGHDTC detecting condition:Immediately at fault recognitionCAUTION:Afte ...

Dtc p0125 insufficient coolant temperature for closed loop fuel control

ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0125 INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROLDTC detecting condition:Detected when two ...

Other materials:

Dtc b1655 front buckle switch rh failure
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B1655 FRONT BUCKLE SWITCH RH FAILUREDiagnosis start condition:Ignition voltage is 8 V to 16 V.DTC detecting condition:• Passenger’s buckle switch circuit is open, shorted or shorted to ...

Removal
EXTERIOR/INTERIOR TRIM > Rear BumperREMOVAL1. CROSSTREK MODEL1. Disconnect the ground cable from battery. NOTE">2. Remove the light assembly - rear combination.CAUTION:Be careful not to damage the clips.(1) Release the bolts and clips, then pull out the light assembly - rear combination ...

Disposal
EXTERIOR BODY PANELS > Rear GateDISPOSAL1. REAR GATE DAMPER STAYCAUTION:Gas is colorless, odorless, and harmless. However, gas pressure may spray cutting powder or oil. Be sure to wear dust-resistant goggles.1. Cover with a vinyl sack as shown in the figure.(1)Stay ASSY - rear gate(2)Vinyl sackNO ...