AUTOMATIC TRANSAXLE SYSTEM, Diagnostic DTC:P079513

DTC Code DTC Name
P079513 Pressure Control Solenoid "C" Circuit Open

DESCRIPTION

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

DTC No. DTC Detection Condition Trouble Area
P079513

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other


  1. Driving so that gear changes occur

  2. An open or short in the shift solenoid valve SL3 circuit is detected.

  3. 1 second

  4. 1-trip detection logic

  • Wiring harness connector

  • Open or short in shift solenoid valve SL3 circuit

  • Shift solenoid valve SL3

  • ECM

MONITOR DESCRIPTION

This DTC indicates an open or short in the shift solenoid valve SL3 circuit. The ECM commands gear shifts by turning the shift solenoid valves on or off. When there is an open or short in any of the shift solenoid valve circuits, the ECM detects the problem, illuminates the MIL and stores a DTC. The ECM also performs the fail-safe function and turns the other normal shift solenoid valves on or off. (In the case of an open or short, the ECM stops sending current to the circuit.)

Click here

WIRING DIAGRAM

B000N9SE03

INSPECTION PROCEDURE

Note

Perform registration and/or initialization when parts related to the automatic transaxle are replaced Click here.

Tech Tips

After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Perform the D Position Shift Test inspection in Road Test Click here.

  2. Check for DTCs again Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (SHIFT SOLENOID VALVE SL3 CIRCUIT)


    1. Disconnect the E96 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E96-7 (SL3+) - E96-6 (SL3-) 20°C (68°F) 5.0 to 5.6 Ω
      E96-7 (SL3+) - Body ground and other terminals Always 10 kΩ or higher
      E96-6 (SL3-) - Body ground and other terminals Always 10 kΩ or higher

    NG

    CHECK HARNESS AND CONNECTOR (ECM - WIRING HARNESS CONNECTOR) Click here

    OK

    REPLACE ECM Click here

  2. CHECK HARNESS AND CONNECTOR (ECM - WIRING HARNESS CONNECTOR)


    1. Disconnect the E8 connector from the wiring harness connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E96-7 (SL3+) - E8-19 (SL3+) Always Below 1 Ω
      E96-6 (SL3-) - E8-18 (SL3-) Always Below 1 Ω
      E96-7 (SL3+) or E8-19 (SL3+) - Body ground and other terminals Always 10 kΩ or higher
      E96-6 (SL3-) or E8-18 (SL3-) - Body ground and other terminals Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT TRANSMISSION WIRE (SL3)


    1. B000K87E06
      Text in Illustration
      *a

      Component without harness connected

      (Transmission Wire)

      Remove the wiring harness connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-16 (SL3+) - A-15 (SL3-) 20°C (68°F) 5.0 to 5.6 Ω
      A-16 (SL3+) - Body ground Always 10 kΩ or higher
      A-15 (SL3-) - Body ground Always 10 kΩ or higher

    NG

    INSPECT SHIFT SOLENOID VALVE SL3 Click here

    OK

    REPLACE WIRING HARNESS CONNECTOR Click here

  4. INSPECT SHIFT SOLENOID VALVE SL3


    1. B000HN3E01
      Text in Illustration
      *1 Shift Solenoid Valve SL3

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

      OK
      Valve moves and makes an operating sound.

    NG

    REPLACE SHIFT SOLENOID VALVE SL3 Click here

    OK

    REPLACE TRANSMISSION WIRE Click here