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Home >> Lexus >> 2008 >> LS 460 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle >> Automatic Transmission System >> DTC P0617 Starter Relay Circuit High >> Inspection Procedure

Inspection Procedure

  1. READ VALUE OF DATA LIST (STARTER SIGNAL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / ECT / Data List.
    5. Read the value displayed on the Techstream.
    6. Crank the engine.
    7. Read the value displayed on the Techstream.

      OK 

      STANDARD CONDITION CHART

      Tester Display Condition Standard
      Starter Signal Engine switch on (IG) OFF
      Starter Signal Engine Is cranking ON

    NG: Go to step  4

    OK: Go to Next Step 

  2. CHECK TCM (STA VOLTAGE) 
    1. Disconnect the A12 and E5 TCM connectors.
    2. Measure the voltage of the wire harness side connectors.

      Standard Voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      A12-3 (STA) - E5-7 (E1) Always Below 2 V
      Fig 1: Identifying A12 And E5 TCM Connector Terminals
      G04948303Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (TCM - ST RELAY) 

    OK: Go to Next Step 

  3. REPLACE TCM 
    1. Replace the TCM (see REMOVAL  ).

    NEXT: PERFORM A/T CODE REGISTRATION  (See REGISTRATION  )

  4. INSPECT PARK/NEUTRAL POSITION SWITCH 
    1. Disconnect the E49 park/neutral position switch connector.
    2. Measure the resistance of the park/neutral position switch when the shift lever is moved to each position.

      Standard Resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      4 (B) - 5 (L) Shift lever on P Below 1 Ω
      4 (B) - 5 (L) Shift lever on N Below 1 Ω
      Fig 2: Identifying Park/Neutral Position Switch Connector Terminals
      G05847457Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

    OK: CHECK CRANKING HOLDING FUNCTION CIRCUIT  (See CRANKING HOLDING FUNCTION CIRCUIT )