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СИСТЕМА АВТОМАТИЧЕСКОЙ ТРАНСМИССИИ С ЭЛЕКТРОННЫМ УПРАВЛЕНИЕМ, Diagnostic DTC:P2716

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DTC Code DTC Name
P2716 Pressure Control Solenoid "D" Electrical (Shift Solenoid Valve SLT)
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DESCRIPTION

The linear solenoid valve (SLT) controls the transmission line pressure for smooth transmission operation based on signals from the throttle position sensor and the vehicle speed sensor.

The ECM adjusts the duty cycle of the SLT solenoid valve to control hydraulic line pressure coming from the primary regulator valve. Appropriate line pressure assures smooth shifting with varying engine outputs.

(*): Duty Ratio

The duty ratio is the ratio of the period of continuity in one cycle.

For example, if A is the period of continuity in one cycle, and B is the period of non-continuity, then

Duty Ratio = A/(A + B) x 100 (%)

DTC No. DTC Detection Condition Trouble Area
P2716 Open or short is detected in shift solenoid valve SLT circuit for 1 second or more while driving (1-trip detection logic).

  • Open or short in shift solenoid valve SLT circuit

  • Shift solenoid valve SLT

  • ECM
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MONITOR DESCRIPTION

When an open or short in the linear solenoid valve (SLT) circuit is detected, the ECM interprets this as a fault.

The ECM will turn on the MIL and store the DTC.

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WIRING DIAGRAM

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INSPECTION PROCEDURE

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PROCEDURE


  1. Click here

    INSPECT TRANSMISSION WIRE (SLT)


    1. A01BD99E16

      Disconnect the transmission wire connector from the transmission.

    2. Measure the resistance according to the value(s) in the table below.

      Resistance
      Tester Connection

      Specified Condition

      20°C (68°F)
      2 (SLT+) - 6 (SLT-) 5.0 to 5.6 Ω

    3. Measure the resistance according to the value(s) in the table below.

      Resistance (Check for short)
      Tester Connection Specified Condition
      2 (SLT+) - Body ground 10 kΩ or higher
      6 (SLT-) - Body ground ↑
      Table 1. Text in Illustration
      *a

      Component without harness connected

      (Transmission Wire)

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    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)


    1. A01BB6YE15

      Connect the transmission wire connector to the transmission.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Resistance
      Tester Connection

      Specified Condition

      20°C (68°F)
      D97-54 (SLT+) - D97-53 (SLT-) 5.0 to 5.6 Ω

    4. Measure the resistance according to the value(s) in the table below.

      Resistance (Check for short)
      Tester Connection Specified Condition
      D97-54 (SLT+) - Body ground 10 kΩ or higher
      D97-53 (SLT-) - Body ground ↑
      Table 2. Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)

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    INSPECT SHIFT SOLENOID VALVE SLT


    1. A01BB3QE24

      Remove the shift solenoid valve (SLT).

    2. Measure the resistance according to the value(s) in the table below.

      Resistance
      Tester Connection

      Specified Condition

      20°C (68°F)
      1 - 2 5.0 to 5.6 Ω

    3. Connect the positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector, and then check the movement of the valve.

      OK
      The solenoid makes an operating sound.
      Table 3. Text in Illustration
      *a

      Component without harness connected

      (Shift Solenoid Valve SLT)

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    REPLACE ECM

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    REPAIR OR REPLACE HARNESS OR CONNECTOR

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    REPLACE SHIFT SOLENOID VALVE SLT

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    REPAIR OR REPLACE TRANSMISSION WIRE