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AUTOMATIC TRANSMISSION SYSTEM Shift Paddle Switch Circuit

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DTC Code DTC Name
  Shift Paddle Switch Circuit
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DESCRIPTION

When the shift lever is in D, operating the "-" side shift paddle switch will cause the transmission to enter fixed range mode which restricts the highest gear. By operating the shift paddle switches "+" (UP) or "-" (DOWN), the shift range can be changed.

When the vehicle is being driven with the shift lever in D (fixed range mode), if the vehicle is stopped or the accelerator pedal is kept steady for a certain period of time with the transmission in the same gear, the vehicle will change back automatically to normal D position operation.

When the shift lever is in M, it is possible to make use of the highest engine speeds by holding the vehicle in a gear. Gear hold control means that gear shifts will not be performed as long as the paddle switches are not operated in either the "+" (UP), or "-" (DOWN) direction.

Figure 2. w/ Dynamic Radar Cruise Control System: B0065QSE20
Figure 1. w/o Dynamic Radar Cruise Control System:
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WIRING DIAGRAM

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PROCEDURE


  1. Click here

    CHECK HARNESS AND CONNECTOR (SHIFT PADDLE SWITCH - ECM)


    1. B00667YC44
      *a

      Rear view of wire harness connector

      (to ECM)

      Disconnect the A78 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A78-29 (SFTU) - Body ground Pull continuously "+" (Up shift) Below 2.5 Ω
      Release "+" (Up shift) 1 MΩ or higher
      A78-28 (SFTD) - Body ground Pull continuously "-" (Down shift) Below 2.5 Ω
      Release "-" (Down shift) 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

  2. Click here

    CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM)


    1. Disconnect the O25 spiral cable sub-assembly connector.

    2. Disconnect the A78 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A78-29 (SFTU) - O25-8 (SUP) Always Below 1 Ω
      A78-28 (SFTD) - O25-1 (SDN) Always Below 1 Ω
      A78-29 (SFTU) or O25-8 (SUP) - Body ground Always 10 kΩ or higher
      A78-28 (SFTD) or O25-1 (SDN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM)

  3. Click here

    CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND)


    1. Disconnect the O25 spiral cable sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O25-2 (ECC) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND)

  4. Click here

    INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. Inspect the spiral cable sub-assembly.

      Click here

      Result
      Proceed to
      OK
      NG

  5. Click here

    INSPECT TRANSMISSION SHIFT SWITCH ASSEMBLY (SHIFT PADDLE SWITCH LH)


    1. B0067P6C07
      *a

      Component without harness connected

      (Shift Paddle Switch LH (Transmission Shift Switch Assembly))

      Remove the transmission shift switch assembly (shift paddle switch LH).

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B-1 (SDN) - B-2 (ECC) Pull continuously "-" (Down shift) Below 2.5 Ω
      Release "-" (Down shift) 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

  6. Click here

    INSPECT TRANSMISSION SHIFT SWITCH ASSEMBLY (SHIFT PADDLE SWITCH RH)


    1. B0066P0C06
      *a

      Component without harness connected

      (Shift Paddle Switch RH (Transmission Shift Switch Assembly))

      Remove the transmission shift switch assembly (shift paddle switch RH).

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-3 (SUP) - A-2 (ECC) Pull continuously "+" (Up shift) Below 2.5 Ω
      Release "+" (Up shift) 1 MΩ or higher
      Result
      Result Proceed to
      OK (w/o Dynamic Radar Cruise Control System) A
      OK (w/ Dynamic Radar Cruise Control System) B
      NG C

  7. Click here

    INSPECT NO. 1 SWITCH WIRE


    1. B00683FC14
      *a

      Front view of wire harness connector

      (to No. 2 Switch Wire)

      Install the transmission shift switch assembly.

      Click here

    2. Disconnect the q1 No. 1 switch wire connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      q1-1 (SUP) - q1-3 (ECC) Pull continuously "+" (Up shift) Below 2.5 Ω
      Release "+" (Up shift) 1 MΩ or higher
      q1-2 (SDN) - q1-3 (ECC) Pull continuously "-" (Down shift) Below 2.5 Ω
      Release "-" (Down shift) 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

  8. Click here

    INSPECT NO. 2 SWITCH WIRE


    1. B00681LC18
      *a

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)

      Connect the q1 No. 1 switch wire connector.

    2. Disconnect the q2 No. 2 switch wire connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      q2-1 (SUP) - q2-4 (ECC) Pull continuously "+" (Up shift) Below 2.5 Ω
      Release "+" (Up shift) 1 MΩ or higher
      q2-3 (SDN) - q2-4 (ECC) Pull continuously "-" (Down shift) Below 2.5 Ω
      Release "-" (Down shift) 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

    • NG

      REPLACE NO. 2 SWITCH WIREClick here

  9. Click here

    INSPECT NO. 1 SWITCH WIRE


    1. B00681LC16
      *a

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)

      Install the transmission shift switch assembly.

      Click here

    2. Disconnect the z12 No. 1 switch wire connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z12-1 (SUP) - z12-4 (ECC) Pull continuously "+" (Up shift) Below 2.5 Ω
      Release "+" (Up shift) 1 MΩ or higher
      z12-3 (SDN) - z12-4 (ECC) Pull continuously "-" (Down shift) Below 2.5 Ω
      Release "-" (Down shift) 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

    • NG

      REPLACE NO. 1 SWITCH WIREClick here