CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM Transmission Control Switch Circuit

DESCRIPTION

After moving the shift lever to M, it is possible to switch between M1 and M7 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.

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

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK DTC OUTPUT

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

      
      Powertrain > Engine and ECT > Trouble Codes

   5. Read the DTCs using the GTS.

      Result
      Result Proceed to DTCs are not output A DTCs are output B

   
   

   B

   GO TO DTC CHART Click here

   A

2. READ VALUE USING GTS (SPORTS MODE SELECTION SW)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

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

   5. In accordance with the display on the GTS, read the Data List.

      
      Powertrain > Engine and ECT > Data List

      Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
      Sports Mode Selection SW	Sport mode select switch status	OFF or ON	ON: Shift lever in M, "+" or "-" 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

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

   A

3. READ VALUE USING GTS (SPORTS SHIFT UP SWITCH AND SPORTS SHIFT DOWN SWITCH)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

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

   5. In accordance with the display on the GTS, read the Data List.

      
      Powertrain > Engine and ECT > Data List

      Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
      Sports Shift Up SW	Sport shift up switch status	OFF or ON	ON: Shift lever held in "+" OFF: Shift lever not held in "+"	-
      Sports Shift Down SW	Sport shift down switch status	OFF or ON	ON: Shift lever held in "-" OFF: Shift lever not held in "-"	-

      Result
      Result Proceed to Data display is within Normal Condition range A Data display is not within Normal Condition range B

   
   

   A

   CHECK FOR INTERMITTENT PROBLEMS Click here

   B

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

   
   
   1. 

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

      Disconnect the E29 transmission control switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition 3 (SFTU) - 2 (E) Shift lever held in "+" Below 1 Ω 3 (SFTU) - 2 (E) Shift lever in M 10 kΩ or higher 1 (SFTD) - 2 (E) Shift lever held in "-" Below 1 Ω 1 (SFTD) - 2 (E) Shift lever in M 10 kΩ or higher

   3. Connect the E29 transmission control switch connector.

      Result
      Proceed to OK NG

   
   

   NG

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

   OK

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

   
   

   1. Disconnect the A50 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition A50-43 (SFTD) - Body ground Shift lever held in "-" Below 1 Ω A50-43 (SFTD) - Body ground Shift lever in M 10 kΩ or higher A50-42 (SFTU) - Body ground Shift lever held in "+" Below 1 Ω A50-42 (SFTU) - Body ground Shift lever in M 10 kΩ or higher

   3. Connect the A50 ECM connector.

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)

   OK

6. REPLACE ECM

   
   

   1. Replace the ECM.

      for 1ZR-FE: Click here

      for 2ZR-FE: Click here

      Result
      Proceed to NEXT

   
   

   NEXT

   PERFORM INITIALIZATION Click here

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

   
   
   1. 

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

      Disconnect the E29 transmission control switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition 4 (IG) - 5 (S) Shift lever in M Below 1 Ω 4 (IG) - 5 (S) Shift lever not in M 10 kΩ or higher

   3. Connect the E29 transmission control switch connector.

      Result
      Proceed to OK NG

   
   

   NG

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

   OK

8. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH POWER SORUCE)

   
   
   1. 

      *a	Front view of wire harness connector (to Transmission Control Switch)

      Disconnect the E29 transmission control switch connector.

   2. Turn the ignition switch ON.

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

      Standard Voltage
      Tester Connection Condition Specified Condition E29-4 (IG) - Body ground Ignition switch ON 11 to 14 V E29-4 (IG) - Body ground Ignition switch off Below 1 V

   4. Connect the E29 transmission control switch connector.

      Result
      Proceed to OK NG

   
   

   NG

   INSPECT POWER SOURCE CIRCUIT

   OK

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

   
   

   1. Disconnect the A50 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition E29-5 (S) - A50-41 (S) Always Below 1 Ω E29-5 (S) - Body ground and other terminals Always 10 kΩ or higher A50-41 (S) - Body ground and other terminals Always 10 kΩ or higher

   3. Connect the A50 ECM connector.

   4. Connect the E29 transmission control switch connector.

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)

   OK

10. REPLACE ECM

    
    

    1. Replace the ECM.

       for 1ZR-FE: Click here

       for 2ZR-FE: Click here

       Result
       Proceed to NEXT

    
    

    NEXT

    PERFORM INITIALIZATION Click here