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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 450 (Automatic Transmission - Diagnosis) >> Circuit Inspection >> DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check park/neutral position switch. 

    PREPARATION: 

    1. Jack up the vehicle.
    2. Disconnect the park/neutral position switch connector.

    CHECK: 

    Check continuity between each terminal shown below when the shift lever is moved to each position.

    OK: 

    TERMINAL NO. TO CONTINUITY

    Shift Position Terminal No. to continuity Terminal No. to continuity
    P 1 - 3 6 - 9
    R 2 - 3 -
    N 3 - 5 6 - 9
    D, 4 3 - 7 -
    3 3 - 4 -
    2, L 3 - 8 -
    Fig 1: Disconnecting Park/Neutral Position Switch Connector
    G03376120Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG : Replace the park/neutral position switch. 
    2. OK : Go to next step. 
  2. Check transmission control switch. 

    PREPARATION: 

    1. Connect the park/ neutral position switch connector.
    2. Disconnect the shift lock control unit connector.

    CHECK: 

    Check continuity between each terminal of shift lock control unit connector.

    OK: 

    SHIFT POSITION

    Shift position Tester connection Specified value
    D 2 - 10 (AT4 - NSSD) No continuity
    4 Continuity
    2 3 - 6 (NSSL - ATL) No continuity
    L Continuity
    Fig 2: Checking Continuity Between Each Terminal Of Shift Lock Control Unit Connector
    G03376121Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG : Replace shift lock control unit assembly. 
    2. OK : Go to next step. 
  3. Measure voltage between each terminals of P, N, D, 4, 3, 2, L and R of ECM and body ground. 

    PREPARATION: 

    1. Connect the shift lock control unit assembly.
    2. Turn the ignition switch ON.

    CHECK: 

    Measure voltage between each terminals P, N, D, 4,3, 2, L and R of ECM and body ground when the shift lever is shifted in the following positions.

    Fig 3: Measuring Voltage Between Each Terminals P, N, D, 4,3, 2, L And R Of ECM
    G03376122Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: 

    VOLTAGE SPECIFICATION

    Tester connection Condition Specified condition
    P - Body ground Shift lever position: P Battery positive voltage
    R - Body ground Shift lever position: R Battery positive voltage(1)
    N - Body ground Shift lever position: N Battery positive voltage
    D - Body ground Shift lever position: D and 4 Battery positive voltage
    4 - Body ground Shift lever position: 4 Battery positive voltage
    3 - Body ground Shift lever position: 3 Battery positive voltage
    2 - Body ground Shift lever position: 2 and L Battery positive voltage
    L - Body ground Shift lever position: L Battery positive voltage
    (1) The voltage will drop slightly due to lighting up the back up light.

    HINT:

    1. NG : Repair or replace the harness or connector. 
    2. OK : Check and replace the ECM (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
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