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  • Selenoid

    So what does it mean if the Transmission Selenoid is throwing a SES?? like a code 1870 tcc?? or something like that.. i'm not quite sure... thx
    99 WS6
    13.25@104.97 - Lid + soon to be more other stock items ;D

    Originally posted by camaroextra
    tears are great lube, but its hard to get a girl to cry onto her own ***.

  • #2
    DTC P1870 Transmission Component Slipping 3.8L




    Circuit Description
    The powertrain control module (PCM) monitors the difference between engine speed and transmission output speed. In D3 drive range with the TCC engaged, the engine speed should closely match the transmission output speed. In D4 drive range, with the TCC engaged, the TCC slip speed should be -20 to +40 RPM.

    When the PCM detects excessive TCC slip when the TCC should be engaged, then DTC P1870 sets. DTC P1870 is a type B DTC.

    Conditions for Running the DTC
    No TP sensor DTCs P0122 or P0123.
    No VSS assembly DTCs P0502 or P0503.
    No TCC solenoid valve DTC P0740.
    No 1-2 SS valve DTC P0753.
    No 2-3 SS valve DTC P0758.
    No 3-2 SS valve assembly DTC P0785.
    No TCC PWM solenoid valve DTC P1860.
    The engine speed is greater than 450 RPM for 5 seconds.
    The engine is not in fuel cutoff.
    The TP angle is 8-35%.
    The engine torque is 40-450 lbs ft.
    The vehicle speed is 48-131 km/h (30-82 mph).
    The speed ratio is 0.65-0.98 (speed ratio is engine speed divided by transmission output speed).
    The engine speed is 1000-3000 RPM.
    The gear range is D4.
    The commanded gear is not 1st gear
    The TFT is between 20-130°C (68-266°F).
    The shift solenoid performance diagnostic counters are zero.
    The TCC is commanded ON for 5 seconds.
    Conditions for Setting the DTC
    DTC P1870 sets if the following conditions occur for three TCC cycles.

    The TCC is at maximum duty cycle for 5 seconds.
    The TCC slip speed is 200-800 RPM for 7 seconds.

    Important
    The following actions may occur before the DTC sets.


    If 4th gear is commanded, the TCC is commanded ON and at maximum duty cycle for 5 seconds, the TP angle is 7-40%, and the transmission slip counter has incremented to either 1 or 2 (out of 3 to increment the fail counter for the current ignition cycle), then the following slip conditions and actions may increment the fail counter for the current ignition cycle: These conditions must occur sequentially.
    Condition 1: If the TCC slip speed is 200-800 RPM for 7 seconds, then the PCM commands maximum line pressure and freezes shift adapts from being updated.
    Condition 2: If Condition 1 is met and the TCC slip speed is 200-800 RPM for 10 seconds, then the PCM commands the TCC OFF for 1.5 seconds.
    Condition 3: If Condition 2 is met and the TCC slip speed is 200-800 RPM for 15 seconds, then the fail counter on the current ignition cycle is incremented. The above slip conditions and actions may be disregarded if the TCC is commanded OFF at any time as a result of a driving maneuver (sudden acceleration or deceleration).
    Action Taken When the DTC Sets
    The PCM illuminates the malfunction indicator lamp (MIL) during the second consecutive trip in which the Conditions for Setting the DTC are met.
    The PCM commands maximum line pressure.
    The PCM inhibits TCC engagement.
    The PCM inhibits 4th gear if the transmission is in hot mode.
    The PCM freezes shift adapts from being updated.
    The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as Freeze Frame and Failure Records.
    The PCM stores DTC P1870 in PCM history during the second consecutive trip in which the Conditions for Setting the DTC are met.
    Conditions for Clearing the MIL/DTC
    The PCM turns OFF the MIL during the third consecutive trip in which the diagnostic test runs and passes.
    A scan tool can clear the MIL/DTC.
    The PCM clears the DTC from PCM history if the vehicle completes 40 warm-up cycles without an emission-related diagnostic fault occurring.
    The PCM cancels the DTC default actions when the fault no longer exists and/or the ignition switch is OFF long enough in order to power down the PCM.
    Diagnostic Aids
    Bronze material found in the transmission oil pan may indicate stator shaft bushing wear. If bushing wear is suspected, inspect the stator shaft and the input (turbine) shaft for damage.
    95 Camaro 3.8L Y2K motor <br /><a href=\"http://www.cardomain.com/id/coriya71\" target=\"_blank\">www.cardomain.com/id/coriya71</a>

    Comment


    • #3
      ty :D , so all this is basically saying is that the tranny slipped? Some of this stuff is kinda over my head.
      99 WS6
      13.25@104.97 - Lid + soon to be more other stock items ;D

      Originally posted by camaroextra
      tears are great lube, but its hard to get a girl to cry onto her own ***.

      Comment

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