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HYBRID CONTROL SYSTEM, Diagnostic DTC:P076A11

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DTC Code DTC Name
P076A11 Shift Solenoid "H" Control Circuit Short to Ground
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DTC SUMMARY


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  1. MALFUNCTION DESCRIPTION

    The solenoid (SC1) valve is an ON/OFF solenoid that switches the clutch control valve and controls the source pressure of the solenoid (SL2) valve and solenoid (SL3) valve. This DTC indicates that the DTC detection level is low (solenoid OFF state), even though the operation command from the hybrid vehicle control ECU assembly to the solenoid is ON. The cause of this malfunction may be one of the following:


    • Open or short between solenoid (SC1) valve and hybrid vehicle control ECU assembly (If an open circuit or short circuit occurs, the hybrid vehicle control ECU assembly cuts power to the malfunctioning solenoid valve.)

    • Solenoid (SC1) valve malfunction

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DESCRIPTION

Based on the ON-OFF combinations of the solenoid (SL1, SL2, SL3, SL4, SLT, SC1 and SC2) valves, the hybrid vehicle control ECU assembly performs gear shifts from 1st gear to 4th gear.

If a circuit related to a solenoid valve is open or shorted, the hybrid vehicle control ECU assembly uses the fail-safe function to turn other solenoid valves on or off.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P076A11 Shift Solenoid "H" Control Circuit Short to Ground

The solenoid terminal voltage level is low, even when the hybrid vehicle control ECU assembly command the solenoid to ON.

(1-trip detection logic)

  • Solenoid (SC1) valve

  • Transmission wire

  • Harness and connector

  • Hybrid vehicle control ECU assembly

 Comes on

Master Warning Light:

Comes on
Table 1. Related Data List
DTC No. Data List
P076A11 Solenoid (SC1)*

Table 2. Related Active Test
DTC No. Active Test
P076A11 Activate the Solenoid (SC1)
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CONFIRMATION DRIVING PATTERN

Tip:

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

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  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off and wait for 2 minutes or more.

  5. Turn the power switch on (READY) and wait for 5 seconds or more.

  6. Turn the power switch off and wait for 2 minutes or more.

  7. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.

  8. Check the DTC judgment result.

    Tip:

    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE, perform driving pattern again.

Table 3. *a Solenoid (SC1) Valve *b Transmission Wire *c Hybrid Vehicle Control ECU Assembly
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WIRING DIAGRAM

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PROCEDURE


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    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE (SOLENOID (SC1) VALVE) - HYBRID VEHICLE CONTROL ECU ASSEMBLY)


    1. B004SH4C18
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

      Disconnect the A76 hybrid vehicle control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A76-3 (SC1) - Body ground 20°C (68°F) 11 to 15 Ω

    3. Reconnect the A76 hybrid vehicle control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

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    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - HYBRID VEHICLE CONTROL ECU ASSEMBLY)


    1. Disconnect the D8 transmission wire connector.

    2. Disconnect the A76 hybrid vehicle control ECU assembly connector.

    3. B004WGDC11
      *a

      Front view of wire harness connector

      (to Transmission Wire)
      *b

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D8-4 (SC1) - A76-3 (SC1) Power switch off Below 1 Ω
      D8-4 (SC1) or A76-3 (SC1) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Reconnect the A76 hybrid vehicle control ECU assembly connector.

    5. Reconnect the D8 transmission wire connector.

      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - HYBRID VEHICLE CONTROL ECU ASSEMBLY)

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    INSPECT SOLENOID (SC1) VALVE


    1. B004T8QC01
      *1 Solenoid (SC1) Valve

      Remove the solenoid (SC1) valve.

      for 2WD:

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      for AWD:

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    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.

    4. Install the solenoid (SC1) valve.

      Result
      Proceed to
      OK
      NG

    • OK

      REPAIR OR REPLACE TRANSMISSION WIRE for 2WD:

      REPAIR OR REPLACE TRANSMISSION WIREClick here

      REPAIR OR REPLACE TRANSMISSION WIRE for AWD:

      REPAIR OR REPLACE TRANSMISSION WIREClick here

    • NG

      REPLACE SOLENOID (SC1) VALVE for 2WD:

      REPLACE SOLENOID (SC1) VALVEClick here

      REPLACE SOLENOID (SC1) VALVE for AWD:

      REPLACE SOLENOID (SC1) VALVEClick here