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Home >> Lexus >> 2007 >> GX 470 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle >> Automatic Transmission System >> DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) >> Inspection Procedure

Inspection Procedure

  1. DATA LIST 

    HINT:

    According to the DATA LIST displayed by the intelligent tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one method to shorten labor time.

    NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
    1. Warm up the engine.
    2. Turn the ignition switch off.
    3. Connect the intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3.
    4. Turn the ignition switch to the ON position.
    5. Turn on the tester.
    6. Select the item "DIAGNOSIS / OBD/MOBD / ECT / DATA LIST".
    7. According to the display on the tester, read the "DATA LIST".
      NORMAL CONDITION TABLE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      PNP SW [NSW] PNP switch status/ ON or OFF Shift lever is:
      • On P and N: ON
      • Not on P and N: OFF
      		 When shift lever position displayed on intelligent tester differs from actual position, adjustment of PNP switch or shift cable may be incorrect
      REVERSE PNP switch status/ ON or OFF Shift lever is:
      • On R: ON
      • Not on R: OFF
      		 When shift lever position displayed on intelligent tester differs from actual position, adjustment of PNP switch or shift cable may be incorrect
      DRIVE PNP switch status/ ON or OFF Shift lever is:
      • On D: ON
      • Not on D: OFF
      		 When shift lever position displayed on intelligent tester differs from actual position, adjustment of PNP switch or shift cable may be incorrect
      4TH/DRIVE PNP switch status/ ON or OFF Shift lever is:
      • On 4: ON
      • Not on 4: OFF
      		 When shift lever position displayed on intelligent tester differs from actual position, adjustment of PNP switch or shift cable may be incorrect
      3RD PNP switch status/ ON or OFF Shift lever is:
      • On 3: ON
      • Not on 3: OFF
      		 When shift lever position displayed on intelligent tester differs from actual position, adjustment of PNP switch or shift cable may be incorrect
      2ND PNP switch status/ ON or OFF Shift lever is:
      • On 2: ON
      • Not on 2: OFF
      		 When shift lever position displayed on intelligent tester differs from actual position, adjustment of PNP switch or shift cable may be incorrect
      LOW PNP switch status/ ON or OFF Shift lever is:
      2: OFF ↓
      Shift position L switch is: Pushed: ON ↓
      Shift position L switch is: Pushed: OFF      		 When shift lever position displayed on intelligent tester differs from actual position, adjustment of PNP switch or shift cable may be incorrect
  1. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
    Fig 1: Identifying Park/Neutral Position Switch Assembly
    G04963268Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Jack up the vehicle.
    2. Disconnect the park/neutral position switch connector.
    3. Measure resistance according to the value (s) in the table below when the shift lever is moved to each position.

    Standard resistance 

    TESTER CONNECTION SPECIFIED CONDITION TABLE

    Shift Position Tester Connection Specified Condition
    P 2-6 and 4-5 Below 1 Ω
    Except P ↑ 10 kΩ or higher
    R 1 -2 Below 1 Ω
    Except R ↑ 10 kΩ or higher
    N 2 - 9 and 4 - 5 Below 1 Ω
    Except N ↑ 10 kΩ or higher
    D and 4 2-7 Below 1 Ω
    Except D and 4 ↑ 10 kΩ or higher
    3 2-3 Below 1 Ω
    Except 3 ↑ 10 kΩ or higher
    2 and L 2-8 Below 1 Ω
    Except 2 and L ↑ 10 kΩ or higher

    NG: REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY 

    OK: Go to Next Step 

  2. INSPECT SHIFT LOCK CONTROL ECU SUB-ASSEMBLY (TRANSMISSION CONTROL SWITCH) 
    Fig 2: Identifying Shift Lock Control ECU Sub-Assembly (Transmission Control Switch)
    G05261209Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Connect the park/neutral position switch connector.
    2. Disconnect the shift lock control ECU connector.
    3. Measure resistance according to the value(s) in the table below when the shift lever is moved to each position.

    Standard resistance 

    TESTER CONNECTION SPECIFIED CONDITION TABLE

    Shift Position Tester Connection Specified Condition
    D 9-2 (NSSD - ATD) Below 1 Ω
    4 10 kΩ or higher
    D 9 - 3 (NSSD - AT4) 10 kΩ or higher
    4 Below 1 Ω
    2 10-5 (NSSL - AT2) Below 1 Ω
    L 10 kΩ or higher
    2 10-4 (NSSL - ATL) 10 kΩ or higher
    L Below 1 Ω

    NG: REPLACE SHIFT LOCK CONTROL ECU SUB-ASSEMBLY 

    OK: Go to Next Step 

  3. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM) 
    1. Connect the shift lock control ECU connector.
    2. Turn the ignition switch to the ON position, and measure the voltage according to the value(s) in the table below when the shift lever is moved to each position.
    Fig 3: Identifying Harness & Connector (Park/Neutral Position Switch - ECM)
    G05261210Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Standard voltage 

    TESTER CONNECTION SPECIFIED CONDITION TABLE

    Shift Position Tester Connection Specified Condition
    P and N E6-8 (STAR/NSW) - Body ground Below 2 V
    Except P and N ↑ 10 to 14 V
    R E8-11 (R) - Body ground 10 to 14 V(1)
    Except R ↑ Below 1 V
    D and 4 E8-21 (D) - Body ground 10 to 14 V
    Except D and 4 ↑ Below 1 V
    4 E8-20 (4) - Body ground 10 to 14 V
    Except 4 ↑ Below 1 V
    3 E8-19 (3) - Body ground 10 to 14 V
    Except 3 ↑ Below 1 V
    2 and L E8-10 (2) - Body ground 10 to 14 V
    Except 2 and L ↑ Below 1 V
    L E8-9 (L) - Body ground 10 to 14 V
    Except L ↑ Below 1 V
    NOTE:

    (1) HINT: *: The voltage will drop slightly due to the turning on of the back up light.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE ECM 

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