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CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM Transmission Control Switch Circuit

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DTC Code DTC Name
  Transmission Control Switch Circuit
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DESCRIPTION

After moving the shift lever to M, it is possible to switch the shift range between "1" (M1 range) and "7" (M7 range) using the transmission control switch.

Moving the shift lever to "+" once raises the shift range by one, and moving the shift lever to "-" lowers the shift range by one.

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WIRING DIAGRAM

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INSPECTION PROCEDURE

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PROCEDURE


  1. Click here

    INSPECT TRANSMISSION CONTROL SWITCH


    1. A01CE83E02

      Disconnect the transmission control switch connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      6 (IG) - 13 (S) Shift lever in M, "+" or "-" Below 1 Ω
      5 (SFTU) - 11 (E) Shift lever held in "+" (Up-shift) Below 1 Ω
      4 (SFTD) - 11 (E) Shift lever held in "-" (Down-shift) Below 1 Ω
      6 (IG) - 13 (S) Shift lever not in M, "+" or "-" 10 kΩ or higher
      5 (SFTU) - 11 (E) Shift lever in M 10 kΩ or higher
      4 (SFTD) - 11 (E) Shift lever in M 10 kΩ or higher
      Table 1. Text in Illustration
      *1

      Component without harness connected

      (Transmission Control Switch)

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    CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - BATTERY AND BODY GROUND)


    1. A01CFU9E08

      Disconnect the transmission control switch connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G2-6 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      G2-6 (IG) - Body ground Engine switch off Below 1 V

    3. Turn the engine switch off.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G2-11 (E) - Body ground Always Below 1 Ω
      Table 2. Text in Illustration
      *1

      Front view of wire harness connector

      (to Transmission Control Switch)

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    CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)


    1. Disconnect the ECM connectors.

    2. Turn the engine switch on (IG).

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      D41-74 (S) - Body ground

      • Engine switch on (IG)

      • Shift lever in M, "+" or "-"

      		 11 to 14 V
      D41-74 (S) - Body ground

      • Engine switch on (IG)

      • Shift lever not in M, "+" or "-"

      		 Below 1 V

    4. Turn the engine switch off.

    5. Disconnect the spiral cable sub-assembly connector.

    6. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A8-16 (SFTU) - Body ground Shift lever held in "+" (Up-shift) Below 1 Ω
      A8-51 (SFTD) - Body ground Shift lever held in "-" (Down-shift) Below 1 Ω
      A8-16 (SFTU) - Body ground Shift lever in M 10 kΩ or higher
      A8-51 (SFTD) - Body ground Shift lever in M 10 kΩ or higher

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    REPLACE ECM


    1. Replace the ECM (Click here).


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    PERFORM INITIALIZATION

    Note:

    • Performing reset memory will clear the learned values of both the yaw rate sensor (deceleration sensor zero point calibration) and CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, yaw rate sensor zero point calibration and CVT oil pressure calibration when replacing any of the parts shown in the following table:

      Replaced Part

      • Continuously variable transaxle assembly

      • ECM

      • Oil pressure sensor

      • Yaw rate sensor

    • After performing reset memory, always perform yaw rate sensor (deceleration sensor zero point) calibration first, and then CVT oil pressure calibration.

    • Always perform zero point calibration with the vehicle on level ground.

    • Do not shake or vibrate the vehicle during zero point calibration.


    1. Using the intelligent tester, perform reset memory, deceleration sensor zero point calibration and CVT oil pressure calibration (Click here).

    2. Check that no DTC is stored.


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    END

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    REPLACE TRANSMISSION CONTROL SWITCH (SHIFT LOCK CONTROL UNIT ASSEMBLY)Click here

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    REPAIR OR REPLACE HARNESS OR CONNECTOR

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    REPAIR OR REPLACE HARNESS OR CONNECTOR