Back Door Courtesy Switch Circuit: Procedure

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 / Main Body / Data List.
5. Read the display on the Techstream.
   MAIN BODY
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Back Door Courtesy SW	Back door courtesy switch signal/ON or OFF	ON: Back door open OFF: Back door closed	-

   OK

   Normal conditions listed above are displayed.

   Result

   Result	Proceed to
   OK	A
   Back door courtesy switch does not operate	B

B → See step   2 

A → See step   5 

1. Remove the back door lock assembly. Refer to REMOVAL .
2. Inspect the back door lock assembly. Refer to INSPECTION .

NG → See step   4 

OK: Go to next step 

1. Disconnect the L7 main body ECU (multiplex network body ECU) connector.
2. Disconnect the R18 back door lock assembly connector.
3. Disconnect the R16 No. 2 room light assembly connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L7-19 (BCTY) - R18-2 (+)	Always	Below 1 Ω
   L7-19 (BCTY) - Body ground	Always	10 kΩ or higher
   R18-1 (E) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   6