Click here

AUTOMATIC TRANSAXLE SYSTEM, Diagnostic DTC:P0798

Click here
Click here Click here
DTC Code DTC Name
P0798 Pressure Control Solenoid "C" Electrical (Shift Solenoid Valve SL3)
Click here

DESCRIPTION

Changing from 1st to 6th is performed by the TCM turning shift solenoid valves SL1, SL2, SL3, SL4 and SL on and off. If an open or short circuit occurs in any of the shift solenoid valves, the TCM controls the remaining normal shift solenoid valves to allow the vehicle to be operated (Click here).

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P0798

  1. While driving and shifting gears

  2. Open or short in the shift solenoid valve SL3 circuit


    • Output signal duty equals 100%.

      (NOTE: SL3 output signal duty is less than 100% under normal condition.)

  4. 1 second or more

  5. 1 trip detection logic

  • Open or short in shift solenoid valve SL3 circuit

  • Shift solenoid valve SL3

  • TCM
Click here

MONITOR DESCRIPTION

The TCM commands gear shifts by turning the shift solenoid valves on or off. When there is an open or short circuit in any shift solenoid valve circuit, the TCM detects the problem, illuminates the MIL and stores the DTC. The TCM also performs the fail-safe function and turns the other normal shift solenoid valves on or off (In case of an open or short circuit, the TCM stops sending current to the circuit.)

(Click here).

Click here

WIRING DIAGRAM

Click here

INSPECTION PROCEDURE

Click here

PROCEDURE


  1. Click here

    INSPECT TRANSMISSION WIRE (SL3)


    1. A019O6VE29

      Remove the TCM from the transaxle.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      16 (SL3+) - 15 (SL3-) 20°C (68°F) 5.0 to 5.6 Ω
      16 (SL3+) - Body ground Always 10 kΩ or higher
      15 (SL3-) - Body ground Always 10 kΩ or higher
      16 (SL3+) - All other terminals except 15 (SL3-) Always 10 kΩ or higher
      15 (SL3-) - All other terminals except 16 (SL3+) Always 10 kΩ or higher
      Table 1. Text in Illustration
      *1

      Component without harness connected

      (Transmission Wire)
      Result
      Result Proceed to
      OK B
      NG A

  2. Click here

    INSPECT SHIFT SOLENOID VALVE SL3


    1. A019JXAE22

      Remove shift solenoid valve SL3.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 5.0 to 5.6 Ω
      Table 2. Text in Illustration
      *1 Shift Solenoid Valve SL3

    3. Connect a battery positive (+) lead with a 21 W bulb to terminal 2 and a negative (-) lead to terminal 1 of the solenoid valve connector. Then check that the valve moves and makes an operating sound.

      OK
      Valve moves and makes an operating sound.

  3. Click here

    REPLACE TRANSMISSION WIREClick here

  4. Click here

    REPLACE TCMClick here

  5. Click here

    REPLACE SHIFT SOLENOID VALVE SL3Click here