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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 122 (Electronic A/T Shift Lever System - Diagnostic Codes (1 Of 2)) >> Electronic Shift Lever System >> DTC P0914-2B: Gear Shift Position Circuit "A" Range/Performance Signal Cross Coupled [10/2022 - 08/2023] >> Procedure

DTC P0914-2B: Gear Shift Position Circuit "A" Range/Performance Signal Cross Coupled [10/2022 - 08/2023]: Procedure

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  1. CHECK DTC OUTPUT (TRANSMISSION) 

    Pre-procedure1

    • Turn the ignition switch to ON.
    • Check for DTCs.

      Powertrain > Transmission > Trouble Codes 

      Result

      Result Proceed to
      Only P0914-2B is output A
      Only P0914-2B and P1789-00 are output B
      Only P0914-2B, P1753-87 and P1789-00 are output C

    Post-procedure1

    • Turn the ignition switch off.

    Result: 

    B 

    REPLACE SHIFT CONTROL ACTUATOR ASSEMBLY (SHIFT ACTUATOR ECU). Refer to  REMOVAL [10/2022 - ] 

    Result: 

    C 

    See step  5

    Result: 

    A 

    See step  2

  2. READ VALUE USING GTS (ABSOLUTE ANGLE SENSOR VALUE) 

    Pre-procedure1

    • Turn the ignition switch to ON.
    • Read the Data List according to the display on the GTS.

      Powertrain > Transmission > Data List 

      Tester Display
      Absolute Angle Sensor Value 1
      Absolute Angle Sensor Value 2

      Result

      Result Proceed to
      The difference between the value of Absolute Angle Sensor Value 1 and Absolute Angle Sensor Value 2 is -1.9 deg or more and 1.9 deg or less A
      None of the above conditions are met B

    Post-procedure1

    • Turn the ignition switch off.

    Result: 

    B 

    REPLACE SHIFT CONTROL ACTUATOR ASSEMBLY (SHIFT ACTUATOR ECU). Refer to  REMOVAL [10/2022 - ] 

    Result: 

    A 

    See step  3

  3. CLEAR DTC 

    Pre-procedure1

    • Turn the ignition switch to ON.
    • Clear the DTCs.

      Powertrain > Transmission > Clear DTCs 

      Result

      Proceed to
      NEXT

    Post-procedure1

    • Turn the ignition switch off.
    • Disconnect the GTS.
    • Leave the vehicle as is for 60 seconds or more.
      NOTE:
      • Do not connect the GTS.
      • Do not depress the brake pedal.
      • Do not open/close any of the doors.

    Result: 

    NEXT 

    See step  4

  4. CHECK DTC OUTPUT 

    Pre-procedure1

    • Turn the ignition switch to ON and wait for 1 minute or more.
    • Check for DTCs.

      Powertrain > Transmission > Trouble Codes 

      Result

      Result Proceed to
      P0914-2B is not output A
      P0914-2B is output B

    Post-procedure1

    • Turn the ignition switch off.

    Result: 

    A 

    END 

    Result: 

    B 

    REPLACE SHIFT CONTROL ACTUATOR ASSEMBLY (SHIFT ACTUATOR ECU). Refer to  REMOVAL [10/2022 - ] 

  5. CHECK HARNESS AND CONNECTOR (BAT1 TERMINAL VOLTAGE) 
    1. Disconnect the B58 shift control actuator assembly (shift actuator ECU) connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition Result
      B58-8 (BAT1) - Body ground Ignition switch off 11 to 14 V V

      Result

      Proceed to
      OK
      NG
    3. Connect the shift control actuator assembly (shift actuator ECU) connector.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (SHIFT CONTROL ECU - SHIFT ACTUATOR ECU) 

    Pre-procedure1

    • Disconnect the C35 transmission floor shift assembly (shift control ECU) connector.
    • Disconnect the B58 shift control actuator assembly (shift actuator ECU) connector.
    • Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      C35-24 (CA4H) - B58-4 (CA4H) Always Below 1 Ω Ω
      C35-10 (CA4L) - B58-3 (CA4L) Always Below 1 Ω Ω
      C35-24 (CA4H) or B58-4 (CA4H) - Body ground and other terminals Always 10 kΩ or higher kΩ
      C35-10 (CA4L) or B58-3 (CA4L) - Body ground and other terminals Always 10 kΩ or higher kΩ

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • Connect the shift control actuator assembly (shift actuator ECU) connector.
    • Connect the transmission floor shift assembly (shift control ECU) connector.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  7

  7. INSPECT SHIFT CONTROL ACTUATOR ASSEMBLY (SHIFT ACTUATOR ECU) 

    Pre-procedure1

    • Disconnect the C35 transmission floor shift assembly (shift control ECU) connector.
    • Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      C35-24 (CA4H) - C35-10 (CA4L) Ignition switch off 108 to 132 Ω Ω

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • Connect the transmission floor shift assembly (shift control ECU) connector.

    Result: 

    OK 

    REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (SHIFT CONTROL ECU). Refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPLACE SHIFT CONTROL ACTUATOR ASSEMBLY (SHIFT ACTUATOR ECU). Refer to  REMOVAL [10/2022 - ] 

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