AUTOMATIC TRANSMISSION SYSTEM(for 8AR-FTS), Diagnostic DTC:P076A15

DTC Code DTC Name
P076A15 Shift Solenoid "H" Control Circuit Short to Battery or Open

DESCRIPTION

Based on the ON-OFF combinations of the solenoid (SL1, SL2, SL3, SL4, SL5, SC1 and SC2) valves, the ECM performs gear shifts from 1st gear to 8th gear.

If a circuit related to a solenoid valve is open or shorted, the ECM uses the fail-safe function to turn other solenoid valves on or off. If all solenoid valves are malfunctioning, only the mechanical fluid pressure circuit will function and some manual operation will be possible. If an open or short has occurred, the ECM cuts power to the malfunctioning solenoid valve.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P076A15 Shift Solenoid "H" Control Circuit Short to Battery or Open

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


  1. Solenoid (SC1) valve is operated

  2. Solenoid (SC1) valve terminal voltage is high

  3. Malfunction status occurs 2 times per trip

  4. 1-trip detection logic

  • Solenoid (SC1) valve

  • Transmission wire

  • Harness and connector

  • ECM

 Comes on DTC stored

SAE Code:

P099F

MONITOR DESCRIPTION

This DTC indicates an open or short in the solenoid (SC1) valve circuit. When there is an open or short in any shift solenoid valve circuit, the ECM detects the problem, illuminates the MIL and stores a DTC.

When the solenoid (SC1) valve is off, if its resistance is 100 kΩ or more, the ECM determines there is an open or short in the solenoid (SC1) valve circuit.

WIRING DIAGRAM

Refer to DTC P076A11.

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CAUTION / NOTICE / HINT

Note

Perform registration and/or initialization when parts related to the automatic transmission are replaced.

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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.

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  2. Check for DTCs again.

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PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE (SOLENOID (SC1) VALVE) - ECM)


    1. Disconnect the F78 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F78-75 (SC1) - Body ground 20°C (68°F) 11 to 15 Ω
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) Click here

    OK

  2. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM A/T CODE REGISTRATION Click here

  3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)


    1. Disconnect the F73 transmission wire connector.

    2. Disconnect the F78 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F73-21 (SC1) - F78-75 (SC1) Always Below 1 Ω
      F73-21 (SC1) or F78-75 (SC1) - Other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM)

    OK

  4. INSPECT SOLENOID (SC1) VALVE


    1. B003VPUC01
      *1 Solenoid (SC1) valve

      Remove the solenoid (SC1) valve.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Terminal of solenoid (SC1) valve connector - Solenoid (SC1) valve body 20°C (68°F) 11 to 15 Ω

    3. Connect a positive (+) lead from the battery to the terminal of the solenoid valve connector, and a negative (-) lead to the solenoid body. Check that the valve moves and makes an operating sound.

      OK
      Valve moves and makes an operating sound.
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE TRANSMISSION WIRE Click here

    NG

    REPLACE SOLENOID (SC1) VALVE Click here