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Transmission Control Switch Circuit [08/2013 - ]: Procedure

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE USING TECHSTREAM (SPORTS MODE) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Data List / Sports Mode.
    4. Read the value displayed on the Techstream.

      Result

      Tester Display Measurement Item/Range Normal Condition
      Sports Mode Sports shift signal
      ON or OFF      		 Shift lever in S: ON
      Shift lever not in S: OFF
    5. Turn the power switch off.

    NG → See step   6 

    OK: Go to next step 

  2. READ VALUE USING TECHSTREAM (SPORT UP SHIFT SENS STATE / SPORT DWN SHIFT SENS STATE) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Data List / Sport Up Shift Sens State/Sport Dwn Shift Sens State.
    4. Read the value displayed on the Techstream.

      Result

      Tester Display Measurement Item/Range Normal Condition
      Sport Up Shift Sens State Sports shift UP signal /
      ON or OFF      		 Shift lever in S and held toward +:
      ON
      Sport Dwn Shift Sens State Sport shift DOWN signal /
      ON or OFF      		 Shift lever in S and held toward -:
      ON
    5. Turn the power switch off.

    NG → See step   4 

    OK: Go to next step 

  3. CHECK FOR INTERMITTENT PROBLEMS 
    1. Check for intermittent problems.
      1. Move the shift lever to S and jiggle the harness and connector.
      2. With the shift lever held toward "+" and then "-", jiggle the harness and connector.

      Result

      Result Proceed to
      Malfunction does not occur A
      Malfunction occurs B

    B → REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

    A → PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

  4. INSPECT LOWER SHIFT LEVER ASSEMBLY (TRANSMISSION CONTROL SWITCH) 
    1. Disconnect the H33 lower shift lever assembly (transmission control switch) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY419528Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 2 Shift lever in positive (+) Below 1 Ω
      3 - 2 Shift lever in S 10 kΩ or higher
      1 - 2
      1 - 2 Shift lever in negative (-) Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Lower Shift Lever Assembly (Transmission Control Switch))
    3. Reconnect the H33 lower shift lever assembly (transmission control switch) connector.

    NG → See step   10 

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (LOWER SHIFT LEVER ASSEMBLY (TRANSMISSION CONTROL SWITCH) - POWER MANAGEMENT CONTROL ECU) 
    1. Disconnect the H2 power management control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY415468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      H2-27 (SFTU) - Body ground Shift lever in positive (+) Below 1 Ω
      H2-27 (SFTU) - Body ground
      H2-26 (SFTD) - Body ground      		 Shift lever in S 10 kΩ or higher
      H2-26 (SFTD) - Body ground Shift lever in negative (-) Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Power Management Control ECU)
    3. Reconnect the H2 power management control ECU connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   9 

  6. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) 
    1. Disconnect the H33 lower shift lever assembly (transmission control switch) connector.
    2. Turn the power switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.
      GTY395536Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Tester Connection Condition Specified Condition
      H33-4 (IG) - H33-2 (E) Power switch on (IG) 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Lower Shift Lever Assembly (Transmission Control Switch))
    4. Turn the power switch off.
    5. Reconnect the H33 lower shift lever assembly (transmission control switch) connector.

    NG → CHECK POWER SOURCE CIRCUIT 

    OK: Go to next step 

  7. INSPECT LOWER SHIFT LEVER ASSEMBLY (TRANSMISSION CONTROL SWITCH) 
    1. Disconnect the H33 lower shift lever assembly (transmission control switch) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY412426Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      H33-4 (IG) - H33- 5 (S) Shift lever not in S 10 kΩ or higher
      H33-4 (IG) - H33-5 (S) Shift lever in S Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Lower Shift Lever Assembly (Transmission Control Switch))
    3. Reconnect the H33 lower shift lever assembly (transmission control switch) connector.

    NG → See step   10 

    OK: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (LOWER SHIFT LEVER ASSEMBLY (TRANSMISSION CONTROL SWITCH) - POWER MANAGEMENT CONTROL ECU) 
    1. Remove the PM IGCT fuse from the No. 2 engine room relay block.
      GTY372282Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 No. 2 Engine Room Relay Block
      *2 PM IGCT Fuse
    2. Remove the AM2 fuse and ECU-IG2 NO. 3 fuse from the engine room relay block and junction block assembly.
      GTY363016Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Engine Room Relay Block and Junction Block Assembly
      *2 AM2 Fuse
      *3 ECU-IG2 NO. 3 Fuse
    3. Disconnect the A31, A33, H1 and H2 power management control ECU connectors.
    4. Measure the resistance according to the value(s) in the table below.
      GTY414147Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      H2-23 (M) - A31-2 (+B2) Power switch off 10 kΩ or higher
      H2-23 (M) - A33-5 (+B1) Power switch off 10 kΩ or higher
      H2-23 (M) - H1-1 (AM22) Power switch off 10 kΩ or higher
      H2-23 (M) - H2-7 (AM21) Power switch off 10 kΩ or higher
      H2-23 (M) - A33-6 (MREL) Power switch off 10 kΩ or higher
      H2-23 (M) - A33-1 (IG2) Power switch off 10 kΩ or higher
      H2-23 (M) - H2-1 (ACCD) Power switch off 10 kΩ or higher
      H2-23 (M) - H2-2 (IG1D) Power switch off 10 kΩ or higher
      H2-23 (M) - A33-2 (IG2D) Power switch off 10 kΩ or higher
      H2-23 (M) - H1-14 (SPDI) Power switch off 10 kΩ or higher
      H2-23 (M) - A31-16 (GI) Power switch off 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Power Management Control ECU)
    5. Disconnect the H33 lower shift lever assembly (transmission control switch) connector.
    6. Measure the resistance according to the value(s) in the table below.
      GTY400754Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      H2-23 (M) - H33-5 (S) Power switch off Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Power Management Control ECU)
      *b Front view of wire harness connector
      (to Lower Shift Lever Assembly (Transmission Control Switch))
    7. Reconnect the H33 lower shift lever assembly (transmission control switch) connector.
    8. Reconnect the A31, A33, H1 and H2 power management control ECU connectors.
    9. Install the AM2 fuse and ECU-IG2 NO. 3 fuse to the engine room relay block and junction block assembly.
    10. Install the PM IGCT fuse to the No. 2 engine room relay block.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   9 

  9. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to  COMPONENTS [08/2013 - ] 
  10. REPLACE LOWER SHIFT LEVER ASSEMBLY (TRANSMISSION CONTROL SWITCH). Refer to  COMPONENTS [08/2013 - ] 
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