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Home >> Lexus >> 2006 >> IS 250 RWD, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission (A760H)) >> Automatic Transmission System >> DTC P0705 Transmission Range Sensor Circuit Malfunction (PRNDL Input) >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different variant/trim than selected.
  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 DATA LIST TABLE , 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 engine switch off.
    3. Connect the intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3.
    4. Turn the engine switch on (IG) position.
    5. Turn on the tester.
    6. Select the item "DIAGNOSIS / ENHANCED OBD II / DATA LIST".
    7. According to the display on the tester, read the "DATA LIST".
DATA LIST TABLE

Item Measurement Item/Range (display) Normal Condition Diagnostic Note
PNP SW [NSW] PNP Switch Status/ON or OFF Shift lever position is;
P and N: ON
Except P and 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 Switch Status/ON or OFF Shift lever position is;
R: ON
Except R: OFF
PARKING PNP Switch Status/ON or OFF Shift lever position is;
P: ON
Except P: OFF
NEUTRAL PNP Switch Status/ON or OFF Shift lever position is;
N: ON
Except N: OFF
DRIVE PNP Switch Status/ON or OFF Shift lever position is;
D and S: ON
Except D and S: OFF
MODE SELECT SW Sport Mode Select Switch Status/ON or OFF Shift lever position is;
S, "+" and "-": ON
Except S, "+" and "-": OFF		 -
  1. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
    1. Disconnect the park/neutral position switch connector.
    2. Measure resistance according to the value(s) in PARK/NEUTRAL POSITION SWITCH ASSEMBLY  when the shift lever is moved to each position.

    Standard resistance 

    PARK/NEUTRAL POSITION SWITCH ASSEMBLY

    Shift Position Tester Connection Specified Condition
    P 2 - 6 and 4 - 5 Below 1 ohms
    Except P 10 k ohms or higher
    R 1 - 2 Below 1 ohms
    Except R 10 k ohms or higher
    N 2 - 9 and 4 - 5 Below 1 ohms
    Except N 10 k ohms or higher
    D, S, "+" and "-" 2 - 7 Below 1 ohms
    Except D, S, "+" and "-" 10 k ohms or higher
    Fig 1: Inspecting Park/Neutral Position Switch Assembly
    G04045126Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

    NG: REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY 

    OK: Go To Next Step 

  2. INSPECT TRANSMISSION CONTROL SWITCH 
    1. Connect the park/neutral position switch connector.
    2. Disconnect the transmission control switch connector of shift lock control unit assembly.
    3. Measure resistance according to the value(s) in TRANSMISSION CONTROL SWITCH  when the shift lever is moved to each position.

    Standard resistance 

    TRANSMISSION CONTROL SWITCH

    Shift Position Tester Connection Specified Condition
    S, "+" and "-" 3 - 7 Below 1 ohms
    Except S, "+" and "-" 10 k ohms or higher
    Fig 2: Inspecting Transmission Control Switch
    G04045127Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

    NG: REPLACE TRANSMISSION CONTROL SWITCH 

    OK: Go To Next Step 

  3. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM) 
    1. Connect the transmission control switch connector of shift lock control unit assembly.
    2. Turn the engine switch on (IG) position, and measure the voltage according to the value(s) in PARK/NEUTRAL POSITION SWITCH - ECM VOLTAGE TABLE  when the shift lever is moved to each position.
    Fig 3: Checking Harness & Connector (Park/Neutral Position Switch - ECM)
    G04045128Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

    Standard voltage 

    PARK/NEUTRAL POSITION SWITCH - ECM VOLTAGE TABLE

    Shift Position Tester Connection Specified Condition
    P and N E4-4 (STAR) - Body ground Below 1 V
    Except P and N 10 to 14 V

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go To Next Step 

  4. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM) 
    1. Disconnect the ECM connector.
    2. Turn the engine switch on (IG) position, and measure the voltage according to the value(s) in PARK/NEUTRAL POSITION SWITCH - ECM  when the shift lever is moved to each position.
    Fig 4: Checking Harness & Connector (Park/Neutral Position Switch - ECM)
    G04045129Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

    Standard voltage 

    PARK/NEUTRAL POSITION SWITCH - ECM

    Shift Position Tester Connection Specified Condition
    P E4-6 (P) - Body ground 10 to 14 V
    Except P Below 1 V
    N E4-32 (N) - Body ground 10 to 14 V
    Except N Below 1 V
    R E4-8 (R) - Body ground 10 to 14 V (1)
    Except R Below 1 V
    D and S E4-9 (D) - Body ground 10 to 14 V
    Except D and S Below 1 V
    S, "+" and "-" A6-9 (S) - Body ground 10 to 14 V
    Except S, "+" and "-" Below 1 V
    HINT:

    (1) 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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