Subaru Crosstrek Service Manual: Dtc u0100 lost communication with ecm/pcm a

Subaru Crosstrek Service Manual / Continuously variable transmission (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / 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.

Judgment Value

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.

Dtc p170a l-range switch

CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P170A L-RANGE SWITCHDTC DETECTING CONDITION:Immediately at fault recognitionNOTE:Refer ...

Dtc u0122 lost communication with vehicle dynamics control module

CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULENOTE:Refer to “LAN S ...

Other materials:

Engine overheating
WARNING Never attempt to remove the radiator cap until the engine has been shut off and has fully cooled down. When the engine is hot, the coolant is under pressure. Removing the cap while the engine is still hot could release a spray of boiling hot coolant, which could burn you very seri ...

Dtc p0102 mass or volume air flow sensor "a" circuit low
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0102 MASS OR VOLUME AIR FLOW SENSOR "A" CIRCUIT LOWDTC detecting condition:Immediately at fault recognitionTrouble symptom:• Improper idling• Engine stall• Poor driving performance ...

Replacing transmitter battery
1. Open the key head using a flat-head screwdriver. 2. Remove the transmitter case from the key head. 3. Open the transmitter case by releasing the hooks. 1) Negative (−) side facing up 4. Replace the old battery with a new battery (type CR1620 or equivalent) making su ...