AUTOMATIC TRANSAXLE SYSTEM, Diagnostic DTC:P0798

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

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 Trouble Area
P0798

The TCM checks for an open or short in the shift solenoid valve SL3 circuit while driving and shifting gears. (1-trip detection logic)


  • Output signal duty equals to 100%.

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

  • Open or short in shift solenoid valve SL3 circuit

  • Shift solenoid valve SL3

  • TCM

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 and illuminates the MIL and stores the DTC. And the TCM 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.

WIRING DIAGRAM

A01W243E64
*1 Shift Solenoid Valve SL3
*2 Transaxle Assembly

PROCEDURE


  1. INSPECT TRANSMISSION WIRE (SL3)


    1. A01W5LWE72
      Text in Illustration
      *a

      Component without harness connected

      (Transmission Wire)

      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 and other terminals Always 10 kΩ or higher
      15 (SL3-) - Body ground and other terminals Always 10 kΩ or higher

    OK

    REPLACE TCM Click here

    NG

  2. INSPECT SHIFT SOLENOID VALVE SL3


    1. A01W2VBE46
      Text in Illustration
      *1 Shift Solenoid Valve SL3

      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

    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.

    OK

    REPLACE TRANSMISSION WIRE Click here

    NG

    REPLACE SHIFT SOLENOID VALVE SL3 Click here