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Home >> Lexus >> 2022 >> RC F Base >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System - Diagnostic Codes (6 Of 9) >> SFI System >> DTC P0705: Transmission Range Sensor Circuit (PRNDL Input) [09/2014 - ] >> Procedure
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DTC P0705: Transmission Range Sensor Circuit (PRNDL Input) [09/2014 - ]: Procedure

  1. READ VALUE USING TECHSTREAM (NEUTRAL POSITION SW SIGNAL AND SHIFT SW STATUS) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Data List / AT / Neutral Position SW Signal and Shift SW Status (R, P, N and D Range).

      Powertrain > Engine > Data List 

      Tester Display
      Neutral Position SW Signal
      Shift SW Status (P Range)
      Shift SW Status (R Range)
      Shift SW Status (N Range)
      Shift SW Status (D Range)
    5. Read the values displayed on the Techstream.

      OK

      Techstream Display Shift Lever Position Specified Condition
      Neutral Position SW Signal P or N ON
      Except P or N OFF
      Shift SW Status (R Range) R ON
      Except R OFF
      Shift SW Status (P Range) P ON
      Except P OFF
      Shift SW Status (N Range) N ON
      Except N OFF
      Shift SW Status (D Range) D or M ON
      Except D or M OFF

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  5

    Result: 

    OK 

    See step  2

  2. READ VALUE USING TECHSTREAM (SPORTS MODE SELECTION SW) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Data List / AT / Sports Mode Selection SW.

      Powertrain > Engine > Data List 

      Tester Display
      Sports Mode Selection SW
    5. Read the values displayed on the Techstream.

      OK

      Techstream Display Shift Lever Position Specified Condition
      Sports Mode Selection SW M ON
      Except M OFF

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [09/2014 - ] 

    Result: 

    NG 

    See step  3

  3. INSPECT TRANSMISSION FLOOR SHIFT ASSEMBLY (TRANSMISSION CONTROL SWITCH) 
    1. Inspect the transmission control switch.

      Refer to PROCEDURE - Step 2

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (TRANSMISSION CONTROL SWITCH). Refer to  REMOVAL [09/2014 - ] 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (ECM - TRANSMISSION CONTROL SWITCH) 
    1. Turn the engine switch on (IG).
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Shift Lever Position Condition Specified Condition
      A78-6 (S) - Body ground M Engine switch on (IG) 11 to 14 V
      Not in M Engine switch on (IG) Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [09/2014 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  5. CHECK TERMINAL VOLTAGE (POWER SOURCE OF PARK/NEUTRAL POSITION SWITCH ASSEMBLY) 
    GTY496924Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Front view of wire harness connector
    (to Park/Neutral Position Switch Assembly)
    1. Disconnect the park/neutral position switch assembly connector.
    2. Turn the engine switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      F26-2 (RB) - Body ground Engine switch on (IG) 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY) 

    Result: 

    OK 

    See step  6

  6. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
    1. Inspect the park/neutral position switch assembly.

      Refer to INSPECTION [09/2014 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM) 
    1. Disconnect the park/neutral position switch assembly connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      F26-7 (DL) - F4-16 (D) Always Below 1 Ω
      F26-9 (NL) - F4-15 (N) Always Below 1 Ω
      F26-1 (RL) - F4-13 (R) Always Below 1 Ω
      F26-6 (PL) - F4-14 (P) Always Below 1 Ω
      F26-4 (B) - A78-31 (NSW) Always Below 1 Ω
      F26-7 (DL) or F4-16 (D) - Body ground Always 10 kΩ or higher
      F26-9 (NL) or F4-15 (N) - Body ground Always 10 kΩ or higher
      F26-1 (RL) or F4-13 (R) - Body ground Always 10 kΩ or higher
      F26-6 (PL) or F4-14 (P) - Body ground Always 10 kΩ or higher
      F26-4 (B) or A78-31 (NSW) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [09/2014 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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