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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission System (UA80F) - Diagnostic Codes (1 Of 2) >> Automatic Transaxle System >> DTC P0705-13: Transmission Range Sensor "A" Circuit Open; DTC P0705-62: Transmission Range Sensor "A" Signal Compare Failure [12/2019 - 10/2022] >> Procedure

DTC P0705-13: Transmission Range Sensor "A" Circuit Open; DTC P0705-62: Transmission Range Sensor "A" Signal Compare Failure [12/2019 - 10/2022]: Procedure

  1. CHECK HARNESS AND CONNECTOR (BATTERY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY) 
    1. Disconnect the C52 park/neutral position switch assembly connector.
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      C52-1 (RB) - Body ground Ignition switch ON 11 to 14 V
      C52-1 (RB) - Body ground Ignition switch off Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (OUTPUT SIGNAL) 
    1. Disconnect the C52 park/neutral position switch assembly connector.
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      C52-4 (B) - Body ground Ignition switch ON 11 to 14 V
      C52-4 (B) - Body ground Ignition switch off Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  6

    Result: 

    OK 

    See step  3

  3. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
    1. Disconnect the C52 park/neutral position switch assembly connector.
      GTY502918Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Park/Neutral Position Switch Assembly)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      4 (B) - 9 (L) Shift lever in P or N Below 1 Ω
      1 (RB) - 3 (PL) Shift lever in P Below 1 Ω
      1 (RB) - 2 (RL) Shift lever in R Below 1 Ω
      1 (RB) - 8 (NL) Shift lever in N Below 1 Ω
      1 (RB) - 7 (DL) Shift lever in D, M, "+" or "-" Below 1 Ω
      4 (B) - 9 (L) Shift lever not in P or N 10 kΩ or higher
      1 (RB) - 3 (PL) Shift lever not in P 10 kΩ or higher
      1 (RB) - 2 (RL) Shift lever not in R 10 kΩ or higher
      1 (RB) - 8 (NL) Shift lever not in N 10 kΩ or higher
      1 (RB) - 7 (DL) Shift lever not in D, M, "+" or "-" 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to  COMPONENTS [12/2019 - 10/2022] 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM) 
    1. Connect the C52 park/neutral position switch assembly connector.
    2. Disconnect the C54 ECM connector.
    3. Turn the ignition switch to ON.
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      C54-108 (P) - Body ground
      • Ignition switch ON
      • Shift lever in P
      		 11 to 14 V
      C54-107 (R) - Body ground
      • Ignition switch ON
      • Shift lever in R
      		 11 to 14 V*
      C54-140 (N) - Body ground
      • Ignition switch ON
      • Shift lever in N
      		 11 to 14 V
      C54-139 (D) - Body ground
      • Ignition switch ON
      • Shift lever in D, M, "+" or "-"
      		 11 to 14 V
      C54-108 (P) - Body ground
      • Ignition switch ON
      • Shift lever not in P
      		 Below 1 V
      C54-107 (R) - Body ground
      • Ignition switch ON
      • Shift lever not in R
      		 Below 1 V
      C54-140 (N) - Body ground
      • Ignition switch ON
      • Shift lever not in N
      		 Below 1 V
      C54-139 (D) - Body ground
      • Ignition switch ON
      • Shift lever not in D, M, "+" or "-"
      		 Below 1 V

      HINT: 

      *: The voltage will drop slightly due to the illumination of the back up lights.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

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

    Result: 

    OK 

    See step  5

  5. REPLACE ECM 
    1. Replace the ECM.

      Refer to COMPONENTS [12/2019 - 10/2022]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    PERFORM REGISTRATION. Refer to  REGISTRATION [12/2019 - 10/2022] 

  6. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM) 
    1. Disconnect the C52 park/neutral position switch assembly connector.
    2. Disconnect the C54 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C52-4 (B) - C54-106 (NSW) Always Below 1 Ω
      C52-4 (B) or C54-106 (NSW) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

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

    Result: 

    OK 

    See step  7

  7. REPLACE ECM 
    1. Replace the ECM.

      Refer to COMPONENTS [12/2019 - 10/2022]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    PERFORM REGISTRATION. Refer to  REGISTRATION [12/2019 - 10/2022] 

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