Back Door Entry Lock Function does not Operate: Procedure

1. When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to switch operation. Refer to OPERATION CHECK .

   OK

   Door unlocks operate normally.

NG → See step   6 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Smart Key / Data List.
5. According to the display on the Techstream, read the Data List.
   SMART KEY
   
   

   Techstream Display	Measurement Item/Display	Normal Condition	Diagnostic Note
   Tr/B-Door Lock SW	Back door outside handle sub-assembly (lock switch) / OFF or ON	OFF: Back door outside handle sub-assembly (lock switch) not pushed ON: Back door outside handle sub-assembly (lock switch) pushed	Displays whether the back door outside handle sub-assembly (lock switch) is on or off. Use this Data List item to help determine if there is a switch malfunction when the back door lock function does not operate.

   OK

   On the Techstream screen, the display changes between ON and OFF as shown in the table above.

NG → See step   3 

OK → See step   5 

1. Disconnect the C19 certification ECU (smart key ECU assembly) connector.
2. Disconnect the L4 back door outside handle sub-assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C19-23 (TSW6) - L4-4 (UL)	Always	Below 1 Ω
   C19-23 (TSW6) or L4-4 (UL) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Inspect the back door outside handle sub-assembly. Refer to INSPECTION .

NG → See step   7 

OK → See step   5