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Thread: Flashing D. Dirk don't read this one.

  1. #1

    Flashing D. Dirk don't read this one.

    Just got told second hand a car had a flashing D yesterday. It's a 15 with 233k km/145k mileses. I forget what the D means, overheating cvt?
    I just drove the car in now, it took a few seconds to get it into drive like an old automatic feels when it's low on fluid. It is -15c or so but I just drove 2 other frozen cacke stiff cars and they went into gear just fine.

    No flashing lights right now and no check engine lights either. I'll scan it and see wtf is going on.


    Mirage videos:

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)


  2. #2
    one code stored in the cvt module. P0746 23A-40 CVT
    DTC P0746: Abnormality in Hydraulic Control System Function
    .
    DIAGNOSTIC FUNCTION
    If the pulley ratio, which is calculated according to the primary pulley speed and the secondary pulley speed, exceeds the standard value, the TCM determines that the line pressure is abnormal.
    .
    DESCRIPTIONS OF MONITOR METHODS
    The ratio between the primary pulley speed and the secondary pulley speed is 2.55 or more for 0.2 seconds, or 3.35 or more for 0.1 second.
    .
    MONITOR EXECUTION
    Transmission range, R or B
    Primary speed: 500 r/min or more
    Acceleration: -0.05G or more
    Engine speed: 450 r/min or more
    .
    MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR)
    Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
    P0705: Malfunction of transmission range switch
    P0715: Malfunction of primary pulley speed sensor
    P0720: Abnormality in output speed sensor
    P0791: Malfunction of the secondary pulley speed sensor
    U0001: Malfunction of CAN communication
    U0100: CAN time-out error (engine)
    Sensor (The sensor below is determined to be normal)
    Transmission range switch
    Primary pulley speed sensor
    Output speed sensor
    Secondary pulley speed sensor
    .
    DIAGNOSIS
    TSB Revision
    CVT 23A-41
    LOGIC FLOW CHARTS (Monitor Sequence)
    .
    DTC SET CONDITIONS
    Check Conditions
    Transmission range switch position: D, R or B.
    Engine speed: 450 r/min or more.
    Primary pulley speed: 500 r/min or more.
    Acceleration: -0.05G or more
    Judgment Criteria
    Pulley ratio (primary pulley speed/secondary pulley speed) more than 2.55 for 0.2 second.
    Pulley ratio (primary pulley speed/secondary pulley speed) more than 3.35 for 0.1 second.
    .
    OBD-II DRIVE CYCLE PATTERN
    The vehicle is driven for at least 10 seconds with the accelerator opening angle at 20% or more.
    .
    PROBABLE CAUSES
    Malfunction of the transaxle assembly (Faulty line pressure solenoid valve or valve body assembly)
    ACC07017STARTYesYesNoContinuous failure for 0.1 secNoYesGoodMalfunctionENDYesYesNoNoRatio > 2.55Ratio > 3.35Continuous failure for 0.2 secAll secondary parametersare in the enable condition.No
    DIAGNOSIS
    TSB Revision
    23A-42 CVT
    DIAGNOSIS
    STEP 1. Check the following connector
    CVT assembly connector
    Check the terminals for a contact status problem and internal short circuit.
    Q:Is the check result normal?
    YES :
    Go to Step 2.
    NO :
    Repair the defective connector.
    STEP 2. Measure the output wave pattern of the line pressure solenoid valve at TCM connector (PLLS terminal).
    (1)Connect the CVT assembly connector.
    (2)Selector lever position: P range.
    (3)Engine: Idling
    (4)Connect an oscilloscope, and measure the voltage between TCM connector PLLS terminal and body ground.
    OK: A wave pattern such as the one shown on P.23A-116 (Check Procedure Using an Oscilloscope) should be output, and the maximum value should be 11 V or more and the minimum value should be 1 V or less. There should be no noise in the output wave pattern.
    Q:Is the check result normal?
    YES :
    Go to Step 3.
    NO :
    Refer to diagnostic trouble code No.P0962: Line Pressure Solenoid Valve (short to ground) P.23A-60, or diagnostic trouble code No.P0963: Line Pressure Solenoid Valve (open circuit/ short to power supply) P.23A-62.
    STEP 3. Symptom recheck after erasing diagnostic trouble code
    (1)Erase the diagnostic trouble code.
    (2)Turn the ignition switch to the LOCK (OFF) position, and then wait for one minute. Then drive the vehicle until the engine has been warmed up.
    (3)Check if the diagnostic trouble code is stored.
    Q:Is the diagnostic trouble code stored?
    YES :
    Replace the transaxle assembly.
    NO :
    Intermittent malfunction (Refer to GROUP 00  How to Cope with Intermittent Malfunctions P.00-13.).


    Kinda good news, no chunks oh smooh in the pan. Just the regular normal smooh. Looking like it may need a valvebody soon?
    Last edited by Fummins; 11-06-2019 at 03:37 PM.
    Mirage videos:

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)


  3. #3
    Senior Member Dirk Diggler's Avatar
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    Good to know not every CVT issue necessarily means a complete replacement!

  4. #4
    You weren't supposed to read this....

    I'm replacing both filters and crossing my fingers. Fluid was pretty dark but not metallic.
    Mirage videos:

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)


  5. #5
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    Quote Originally Posted by Fummins View Post
    You weren't supposed to read this....
    He did hold off for almost an hour though!

  6. The Following User Says Thank You to Mark For This Useful Post:

    Fummins (11-06-2019)

  7. #6
    So far so good. Fluid is still fairly clear and seems to drive fine.
    Mirage videos:

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)


  8. The Following User Says Thank You to Fummins For This Useful Post:

    Dirk Diggler (11-06-2019)

  9. #7
    Senior Member Dirk Diggler's Avatar
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    Would a Mitsu service center even try this or would they just tell you to buy a new CVT?

  10. #8
    If it was still under warranty they'd change the fluid and kick it out the door hoping it last's til warranty is up. If over warranty, it's hard to say what they'd do. Likely nothing and say it's normal.
    Mirage videos:

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)


  11. The Following 2 Users Say Thank You to Fummins For This Useful Post:

    Dirk Diggler (11-06-2019),poorman1 (11-09-2019)

  12. #9
    Senior Member Dirk Diggler's Avatar
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    Whats the latest Fummy?

  13. #10
    No news is good news. So far so good.


    Mirage videos:

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)


  14. The Following User Says Thank You to Fummins For This Useful Post:

    Dirk Diggler (11-08-2019)

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