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Home >> Lexus >> 2007 >> ES 350 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC P0606 - P2A03, DTC U0101 >> DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) >> Inspection Procedure
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Inspection Procedure

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. READ DATA LIST 
    1. Turn the engine switch off.
    2. Connect the intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3.
    3. Turn the engine switch on (IG).
    4. Turn on the tester.
    5. Select the item "DIAGNOSIS / ENHANCED OBD II / DATA LIST".
    6. According to the display on the tester, read the "DATA LIST".
      DATA LIST REFERENCE TABLE

      Item Measurement Item / Range (Display) Normal Condition Diagnostic Note
      PNP SW [NSW] PNP SW Status / ON or OFF Shift lever position is; P and N: ON Except P or N: OFF When the shift lever position displayed on the intelligent tester differs from the actual position, adjustment of the PNP switch or the shift cable may be incorrect.
      REVERSE PNP SW Status / ON or OFF Shift lever position is; R: ON Except R: OFF ↑
      DRIVE PNP SW Status / ON or OFF Shift lever position is; D and S: ON Except D or S: OFF ↑
  1. CHECK HARNESS AND CONNECTOR (BATTERY - PARK/NEUTRAL POSITION SWITCH) 
    1. Disconnect the park/neutral position switch connector.
    2. Turn the engine switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      VOLTAGE SPECIFICATION TABLE

      Tester Connection Specified Condition
      RB (B36-1) - Body ground 10 to 14 V
      Fig 1: Identifying Park/Neutral Position Switch Connector Terminals
      G05247756Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  2. CHECK ECM (OUTPUT SIGNAL) 
    1. Turn the engine switch on (IG).
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      VOLTAGE SPECIFICATION TABLE

      Tester Connection Specified Condition
      RB (B36-4) - Body ground Below 3 V
      Fig 2: Identifying Park/Neutral Position Switch Connector Terminals
      G05247757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: Go to step   11 

    OK: Go to Next Step 

  3. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ST RELAY) 
    1. Disconnect the B36 park/neutral position switch connector.
    2. Remove the ST relay from the engine room relay block.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (check for open) 

      RESISTANCE REFERENCE (CHECK FOR OPEN)

      Tester Connection Specified Condition
      L (B36-9) - ST relay terminal 1 Below 1 Ω

      Standard resistance (check for open) 

      RESISTANCE REFERENCE (CHECK FOR OPEN)

      Tester Connection Specified Condition
      L (B36-9) or ST relay terminal 1 - Body ground 10 kΩ or higher
      Fig 3: Identifying B36 Park/Neutral Position Switch Connector Terminals & Engine Room Relay Block
      G05247758Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Reinstall the ST relay.
    5. Reconnect the park/neutral position switch connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  4. INSPECT ST RELAY 
    1. Remove the ST relay from the engine room relay block.
    2. Measure the resistance between the terminals.

      Standard resistance 

      RESISTANCE REFERENCE

      Tester Connection Specified Condition
      3 - 5 10 kΩ or higher
      3 - 5 Below 1Ω Apply battery voltage between terminals 1 and 2
      Fig 4: Inspecting ST Relay
      G04942976Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Reinstall the ST relay.

    NG: REPLACE ST RELAY 

    OK: Go to Next Step 

  5. CHECK HARNESS AND CONNECTOR (ST RELAY - BODY GROUND) 
    1. Remove the ST relay from the engine room relay block.
    2. Measure the resistance between the terminals.

      Standard resistance 

      RESISTANCE REFERENCE TABLE

      Tester connection Specified Condition
      ST relay terminal 2 - Body ground Below 1 Ω
      Fig 5: Identifying Harness & Connector (ST Relay - Body Ground)
      G04973652Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  6. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
    1. Disconnect the B36 park/neutral position switch connector.
    2. Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

      Standard resistance 

      RESISTANCE REFERENCE TABLE

      Shift Position Tester Connection Specified Condition
      P 1 - 3 and 4 - 9 Below 1 Ω
      Except P 10 kΩ or higher
      R 1 - 2 Below 1 Ω
      Except R 10 kΩ or higher
      N 1 - 8 and 4 - 9 Below 1 Ω
      Except N 10 kΩ or higher
      D, S, "+" and "-" 1 - 7 Below 1 Ω
      Except D, S, "+" and "-" 10 kΩ or higher
      Fig 6: Identifying Park/Neutral Position Switch Connector Terminals
      G05247761Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Reconnect the park/neutral position switch connector.

    NG: REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY  (See REMOVAL )

    OK: Go to Next Step 

  7. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the ECM connectors.
      Fig 7: Identifying ECM Connector Terminals
      G05247762Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the engine switch on (IG), and measure the voltage according to the value(s) in the table below when the shift lever is moved to each position.

      Standard voltage 

      VOLTAGE SPECIFICATION TABLE

      Shift Position Tester Connection Specified Condition
      P B12-24 (P) - Body ground 10 to 14 V
      Except P Below 1 V
      N B12-27 (N) - Body ground 10 to 14 V
      Except N Below 1 V
      R B12-25 (R) - Body ground 10 to 14 V*
      Except R Below 1 V
      D and S B12-26 (D) - Body ground 10 to 14 V
      Except D and S Below 1 V
      S, "+" and "-" A10-25 (S) - Body ground 10 to 14 V
      Except S, "+" and "-" Below 1 V
      HINT:
      *: The voltage will drop slightly due to lighting up of the back up light.
    3. Reconnect the ECM connectors.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  8. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the transmission control switch connector from the shift lock control unit assembly.
    2. Turn the engine switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      VOLTAGE SPECIFICATION TABLE

      Tester Connection Specified Condition
      IG (E84-3) - Body ground 10 to 14 V
    4. Reconnect the transmission control switch connector.
      Fig 8: Identifying Transmission Control Switch Connector Terminals
      G05247763Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  9. INSPECT TRANSMISSION CONTROL SWITCH 
    1. Disconnect the E84 transmission control switch connector.
    2. Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

      Standard resistance 

      RESISTANCE REFERENCE TABLE

      Shift Position Tester Connection Specified Condition
      S, "+" and "-" 3 - 7 Below 1 Ω
      Except S, "+" and "-" 10 kΩ or higher
      Fig 9: Identifying E84 Transmission Control Switch Connector Terminals
      G05247764Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Reconnect the transmission control switch.

    NG: REPLACE TRANSMISSION CONTROL SWITCH 

    OK: Go to Next Step 

  10. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the ECM connectors.
      Fig 10: Identifying ECM Connector Terminals
      G05247762Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the engine switch on (IG), and measure the voltage according to the value(s) in the table below when the shift lever is moved to each position.

      Standard voltage 

      VOLTAGE SPECIFICATION TABLE

      Shift Position Tester Connection Specified Condition
      P B12-24 (P) - Body ground 10 to 14 V
      Except P Below 1 V
      N B12-27 (N) - Body ground 10 to 14 V
      Except N Below 1 V
      R B12-25 (R) - Body ground 10 to 14 V*
      Except R Below 1 V
      D and S B12-26 (D) - Body ground 10 to 14 V
      Except D and S Below 1 V
      S, "+" and "-" A10-25 (S) - Body ground 10 to 14 V
      Except S, "+" and "-" Below 1 V

      HINT:

      The voltage will drop slightly due to lighting up of the back up light.

    3. Reconnect the ECM connectors.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE ECM (See  REMOVAL  ) 

  11. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM) 
    1. Disconnect the ECM connectors.
    2. Turn the engine switch off.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open) 

      RESISTANCE REFERENCE (CHECK FOR OPEN)

      Tester Connection Specified Condition
      B (B36-4) - NSW (B12-62) Below 1 Ω

      Standard resistance (Check for short) 

      RESISTANCE REFERENCE (CHECK FOR SHORT)

      Tester Connection Specified Condition
      B (B36-4) or NSW (B12-62) - Body ground 10 kΩ or higher
      Fig 11: Identifying Park/Neutral Position SW & ECM Connector Terminals
      G05247766Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE ECM (See  REMOVAL  ) 

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