CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM > Transmission Control Switch Circuit

for Preparation Click here


DESCRIPTION

After moving the shift lever to M, it is possible to switch the shift range between "1" (S1 range) and "7" (S7 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.

WIRING DIAGRAM


C201628E03


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER (SPORT MODE SELECTION SW)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List.

  1. In accordance with the display on the tester, read the Data List.

    Engine and ECT 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Sports Mode Selection SW
    		Sport mode select switch status/
    ON or OFF
    		Shift lever position;
    M, "+" or "-": ON
    Except M, "+" or "-": OFF
    1. ON: Shift lever in M, "+" or "-"
    2. OFF: Shift lever not in M, "+" or "-"
    		-
    Result 
    Result
    		Proceed to
    Data display is within Normal Condition range
    		A
    Data display is not within Normal Condition range
    		B



B
Go to step 7
A


2.READ VALUE USING INTELLIGENT TESTER (SPORT SHIFT UP SW / SPORT SHIFT DOWN SW)

  1. Enter the following menus: Powertrain / Engine and ECT / Data List.

  1. In accordance with the display on the tester, read the Data List.

    Engine and ECT 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Sports Shift Up SW
    		Sport shift up switch status/
    ON or OFF
    		Shift lever held in "+" (up shift): ON
    Shift lever not held in "+" (up shift): OFF
    		-
    Sports Shift Down SW
    		Sport shift down switch status/
    ON or OFF
    		Shift lever held in "-" (down shift): ON
    Shift lever not held in "-" (down shift): OFF
    		-
    Result 
    Result
    		Proceed to
    Data display is within Normal Condition range
    		A
    Data display is not within Normal Condition range
    		B



B
Go to step 3
A

CHECK INTERMITTENT PROBLEMS (Click here)  

3.INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH)


    C193928E10

  1. Disconnect the transmission control switch connector of the shift lock control unit assembly.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    5 (SFTU) - 11 (E)
    		Shift lever held in "+" (Up-shift)
    		Below 1 Ω
    Shift lever in M
    		10 kΩ or higher
    4 (SFTD) - 11 (E)
    		Shift lever held in "-" (Down-shift)
    		Below 1 Ω
    Shift lever in M
    		10 kΩ or higher

    Text in Illustration 
    *a
    		Component without harness connected
    (Shift Lock Control Unit Assembly (Transmission Control Switch))

  1. Reconnect the transmission control switch connector of the shift lock control unit assembly.



NG
REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY (Click here)
OK


4.CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)


    C207048E02

  1. Disconnect the ECM connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A18-16 (SFTU) - Body ground
    		Shift lever held in "+" (Up-shift)
    		Below 1 Ω
    Shift lever in M
    		10 kΩ or higher
    A18-51 (SFTD) - Body ground
    		Shift lever held in "-" (Down-shift)
    		Below 1 Ω
    Shift lever in M
    		10 kΩ or higher

    Text in Illustration 
    *a
    		Front view of wire harness connector
    (to ECM)



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.REPLACE ECM

  1. Replace the ECM (Click here).


NEXT


6.PERFORM INITIALIZATION

  1. Perform the initialization (Click here).

  1. Check for DTCs again (Click here).


NEXT

END 

7.INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH)


    C193928E08

  1. Disconnect the transmission control switch connector of the shift lock control unit assembly.

  1. 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
    Shift lever in D
    		10 kΩ or higher

    Text in Illustration 
    *a
    		Component without harness connected
    (Shift Lock Control Unit Assembly (Transmission Control Switch))



NG
REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY (Click here)
OK


8.CHECK HARNESS AND CONNECTOR (IG POWER SUPPLY)


    C207409E01

  1. Turn the ignition switch to ON.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D55-6 (IG) - Body ground
    		Ignition switch ON
    		11 to 14 V

Text in Illustration 
*a
Front view of wire harness connector
(to Shift Lock Control Unit Assembly (Transmission Control Switch))


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


9.CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)

  1. Disconnect the ECM connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    D55-13 (S) - B8-39 (B)
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


10.REPLACE ECM

  1. Replace the ECM (Click here).


NEXT


11.PERFORM INITIALIZATION

  1. Perform the initialization (Click here).

  1. Check for DTCs again (Click here).


NEXT

END