FixVault
Home › Lexus › 2007 › LX 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

HINT:

Using the intelligent tester's DATA LIST allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the DATA LIST early in troubleshooting is one way to save 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 to the CAN VIM. Then connect the CAN VIM to the DLC3.
  4. Turn the ignition switch ON.
  5. Turn the intelligent tester ON.
  6. Enter the following menus: DIAGNOSIS / OBD/MOBD / ECT / DATA LIST.
  7. Follow the instructions on the tester and read the DATA LIST.
    DATA LIST REFERENCE

    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
    PARKING PNP switch status/ON or OFF Shift lever is:
    • On P: ON
    • Not on P: OFF
    		 When shift lever position displayed on intelligent tester differs from actual position, adjustment of PNP switch or shift cable may be incorrect
    NEUTRAL PNP switch status/ ON or OFF Shift lever is:
    • On N: ON
    • Not on N: 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:
    • On L: ON
    • Not on L: 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 
    1. Disconnect the P1 PNP switch connector.
    2. Measure the resistance of the PNP switch when the shift lever is moved to each position.

      Standard resistance 

      RESISTANCE REFERENCE CHART

      Tester Connection Shift Lever Position Specified Condition
      4 (B) - 5 (L) P or N Below 1 Ω
      4 (B) - 5 (L) Not on P or N 10 kΩ or higher
      1 (RL) - 2 (RB) R Below 1 Ω
      1 (RL) - 2 (RB) Not on R 10 kΩ or higher
      2 (RB) - 7 (DL) D Below 1 Ω
      2 (RB) - 7 (DL) Not on D 10 kΩ or higher
      2 (RB) - 3 (2L) 2 Below 1 Ω
      2 (RB) - 3 (2L) Not on 2 10 kΩ or higher
      2 (RB) - 8 (LL) L Below 1 Ω
      2 (RB) - 8 (LL) Not on L 10 kΩ or higher
      Fig 1: Identifying Park/Neutral Position Switch Connector Terminal
      G05282639Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE PARK/NEUTRAL POSITION SWITCH 

    OK: Go to Next Step 

  2. INSPECT TRANSMISSION CONTROL SWITCH 
    1. Disconnect the A52 switch connector.
    2. Measure the resistance of the switch when the shift lever is moved to each position.

      Standard resistance 

      RESISTANCE REFERENCE CHART

      Tester Connection Shift Lever Position Specified Condition
      1 (NSSD) - 8 (AT4) D 10 kΩ or higher
      1 (NSSD) - 8 (AT4) 3 Below 1 Ω
      6 (NSSL) - 12 (ATC) 2 10 kΩ or higher
      6 (NSSL) - 12 (ATC) L Below 1 Ω
      Fig 2: Identifying Transmission Control Switch Connector Terminal
      G05282640Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE TRANSMISSION CONTROL SWITCH 

    OK: Go to Next Step 

  3. CHECK WIRE HARNESS (ECM - BATTERY) 
    1. Turn the ignition switch ON.
    2. Measure the voltage of the wire harness side connector.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Shift Lever Position Specified Condition
      E9-11 (R) - Body ground R 10 to 14 V*
      E9-11 (R) - Body ground Not on R Below 1 V
      E9-21 (D) - Body ground D or 3 10 to 14 V
      E9-21 (D) - Body ground Not on D or 3 Below 1 V
      E9-19 (3) - Body ground 3 10 to 14 V
      E9-19 (3) - Body ground Not on 3 Below 1 V
      E9-10 (2) - Body ground 2 10 to 14 V
      E9-10 (2) - Body ground Not on 2 Below 1 V
      E9-9 (L) - Body ground L 10 to 14 V
      E9-9 (L) - Body ground Not on L Below 1 V
      HINT:
      *: The voltage will drop slightly due to the illumination of the back-up light.
      Fig 3: Identifying Harness Side Connector Terminals
      G05282641Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: REPLACE ECM 

About FixVault