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.
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.
When checking or servicing in the engine compartment
CAUTION
Do not contact the drive belt
cover while checking the components
in the engine compartment.
Doing so may cause your
hand to slip off the cover and
result in an unexpected injury.
Do not touch the oil filter until the engine has cooled down
completely.
Doing so m ...
Fuel economy hints
The following suggestions will help to save
fuel.
Select the proper gear position for the
speed and road conditions.
Avoid sudden acceleration or deceleration.
Always accelerate gently until you
reach the desired speed. Then try to
maintain that speed for as long as
possible.
Do ...
Read diagnostic trouble code (dtc) Operation
BODY CONTROL SYSTEM (DIAGNOSTICS) > Read Diagnostic Trouble Code (DTC)OPERATION1. On «Start» display, select «Diagnosis».2. On «Vehicle selection» display, input the target vehicle information and select «Confirmed».3. On «Main Menu» display, select «Each System».4. On «Select System ...