Transmission Control Switch Circuit: Procedure

1. Disconnect the transmission control switch connector of shift lever assembly.
   Fig 1: Checking Harness And D24 Connector (Battery - Transmission Control Switch)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   D24-3 (IG) - Body ground	Ignition switch ON (IG)	11 to 14 V
   	Ignition switch OFF	Below 1 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Measure the resistance according to the value(s) in the table below.
   Fig 2: Checking Harness And D24 Connector (Transmission Control Switch - Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Condition	Specified Condition
   7*1 - Body ground 5*2 - Body ground	Always	Below 1 Ω

   *1: w/ Smart Key System

   *2: w/o Smart Key System

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Measure the resistance between each terminal of the shift lever assembly when the shift lever is moved to each position.
   Fig 3: Identifying Transmission Control Switch D24 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Shift Position	Specified Condition
   3 - 9*1 3 - 7*2	S, "+" and "-"	Below 1 Ω
   	Except S, "+" and "-"	10 kΩ or higher
   2 - 7*1 2 - 5*2	Press continuously "+" (Up shift)	Below 1 Ω
   	S	10 kΩ or higher
   1 - 7*1 1 - 5*2	Press continuously "-" (Down shift)	Below 1 Ω
   	S	10 kΩ or higher

   *1: w/ Smart Key System

   *2: w/o Smart Key System

NG → See step  REMOVAL 

OK: Go to next step 

1. Connect the transmission control switch connector of the shift lever assembly.
   Fig 4: Checking Harness And A55 Connector (Transmission Control Switch - ECM)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the ECM connector.
3. Turn the ignition switch on (IG), and measure the voltage according to the value(s) in the table below when the shift lever is moved to each position.

   Standard voltage

   Tester Connection	Shift Position	Specified Condition
   A55-25 (S) - Body ground	S, "+" and "-"	11 to 14 V
   	Except S, "+" and "-"	Below 1 V

4. Turn the ignition switch off.
5. Disconnect the ECM connector.
6. Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

   Standard resistance

   Tester Connection	Shift Position	Specified Condition
   A55-16 (SFTU) - Body ground	Press continuously "+" (Up shift)	Below 1 Ω
   	S	10 kΩ or higher
   A55-51 (SFTD) - Body ground	Press continuously "-" (Down shift)	Below 1 Ω
   	S	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE