AUTOMATIC TRANSMISSION SYSTEM(for 1UR-FE) Transmission Control Switch Circuit

DESCRIPTION

After moving the shift lever to S using the transmission control switch, it is possible to switch the shift range between "1" (1st range) and "6" (6th range).

Shifting to "+" once raises the shift range by one, and shifting to "-" lowers the shift range by one.

WIRING DIAGRAM

PROCEDURE

1. INSPECT TRANSMISSION CONTROL SWITCH

   
   
   1. 

      Text in Illustration

      *a	Component without harness connected (Transmission Control Switch)

      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 3 (IG) - 7 (S) Shift lever in S, "+" or "-" Below 1 Ω 2 (SFTU) - 5 (E) Shift lever held in "+" (Up-shift) Below 1 Ω 1 (SFTD) - 5 (E) Shift lever held in "-" (Down-shift) Below 1 Ω 3 (IG) - 7 (S) Shift lever not in S, "+" or "-" 10 kΩ or higher 2 (SFTU) - 5 (E) Shift lever in S 10 kΩ or higher 1 (SFTD) - 5 (E) Shift lever in S 10 kΩ or higher

   
   

   NG

   REPLACE TRANSMISSION CONTROL SWITCH (LOWER SHIFT LEVER ASSEMBLY) Click here

   OK

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

   
   
   1. 

      Text in Illustration

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

      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 E52-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V E52-3 (IG) - Body ground Engine switch off Below 1 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition E52-5 (E) - Body ground Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

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

   
   
   1. 

      Text in Illustration

      *1	for LHD
      *2	for RHD
      *a	Front view of wire harness connector (to ECM)

      Disconnect the ECM connector.

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

      Standard Voltage
      for LHD Tester Connection Condition Specified Condition A38-25 (S) - Body ground Engine switch on (IG) Shift lever in S, "+" or "-" 11 to 14 V A38-25 (S) - Body ground Engine switch on (IG) Shift lever not in S, "+" or "-" Below 1 V
      for RHD Tester Connection Condition Specified Condition A52-25 (S) - Body ground Engine switch on (IG) Shift lever in S, "+" or "-" 11 to 14 V A52-25 (S) - Body ground Engine switch on (IG) Shift lever not in S, "+" or "-" Below 1 V

   3. Turn the engine switch off.

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

      Standard Resistance
      for LHD Tester Connection Condition Specified Condition A38-38 (SFTU) - Body ground Shift lever held in "+" (Up-shift) Below 1 Ω A38-27 (SFTD) - Body ground Shift lever held in "-" (Down-shift) Below 1 Ω A38-38 (SFTU) - Body ground Shift lever in S 10 kΩ or higher A38-27 (SFTD) - Body ground Shift lever in S 10 kΩ or higher
      for RHD Tester Connection Condition Specified Condition A52-38 (SFTU) - Body ground Shift lever held in "+" (Up-shift) Below 1 Ω A52-27 (SFTD) - Body ground Shift lever held in "-" (Down-shift) Below 1 Ω A52-38 (SFTU) - Body ground Shift lever in S 10 kΩ or higher A52-27 (SFTD) - Body ground Shift lever in S 10 kΩ or higher

   
   

   OK

   PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR