Lock Switch Circuit: Procedure

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the tester on.
4. Enter the following menus: Body Electrical / Smart Key / Data List.
5. Read the Data List according to the display on the tester.
   SMART KEY:
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   D-Door Trigger Switch	Lock switch / ON or OFF	ON: Lock switch is pushed OFF: Lock switch is not pushed	-
   P-Door Trigger Switch	Lock switch / ON or OFF	ON: Lock switch is pushed OFF: Lock switch is not pushed	-
   Dr-Door Trigger Switch	Lock switch rear LH / ON or OFF	ON: Lock switch is pushed OFF: Lock switch is not pushed	-
   Pr- Door Trigger Switch	Lock switch rear RH / ON or OFF	ON: Lock switch is pushed OFF: Lock switch is not pushed	-

   OK

   On the tester screen, each item changes between ON and OFF according to the chart above.

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

NG: Go to next step 

1. Remove the outside handle.
   Fig 1: Identifying Lock Switch Connector Terminals

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

   Resistance

   Tester Connection	Condition	Specified Condition
   W2-1 (TRG-) - W2-3 (TRG+)	Lock switch not pushed → Pushed	10 kΩ or higher → Below 1 Ω
   V2-1 (TRG-) - V2-3 (TRG+)
   Y2-1 (TRG-) - Y2-3 (TRG+)
   X2-1 (TRG-) - X2-3 (TRG+)

NG → REPLACE OUTSIDE HANDLE 

OK: Go to next step 

1. Disconnect the D39 and D40 ECU connectors.
   Fig 2: Identifying Certification ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.
   Fig 3: Identifying Lock Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Resistance

   Tester Connection	Condition	Specified Condition
   D39-3 (TSW1) - W2-3 (TRG+)	Always	Below 1 Ω
   D39-4 (TSW2) - V2-3 (TRG+)	Always	Below 1 Ω
   D40-25 (TSW3) - Y2-3 (TRG+)	Always	Below 1 Ω
   D40-26 (TSW4) - X2-3 (TRG+)	Always	Below 1 Ω
   D39-3 (TSW1) - Body ground	Always	10 kΩ or higher
   D39-4 (TSW2) - Body ground	Always	10 kΩ or higher
   D40-25 (TSW3) - Body ground	Always	10 kΩ or higher
   D40-26 (TSW4) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the door oscillator connector.
   Fig 4: Identifying Door Oscillator Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.
   Fig 5: Identifying Lock Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Resistance

   Tester Connection	Condition	Specified Condition
   W1-9 (TRG-) - W2-1 (TRG-)	Always	Below 1 Ω
   V1-9 (TRG-) - V2-1 (TRG-)	Always	Below 1 Ω
   Y1-9 (TRG-) - Y2-1 (TRG-)	Always	Below 1 Ω
   X1-9 (TRG-) - X2-1 (TRG-)	Always	Below 1 Ω
   W1-9 (TRG-) - Body ground	Always	10 kΩ or higher
   V1-9 (TRG-) - Body ground	Always	10 kΩ or higher
   Y1-9 (TRG-) - Body ground	Always	10 kΩ or higher
   X1-9 (TRG-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

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