Rear 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
   RR Door Courtesy SW	Rear door courtesy light switch RH signal/ON or OFF	ON: Rear door LH open and rear door RH closed ON: Rear door LH closed and rear door RH open ON: Rear door LH and rear door RH open OFF: Rear door LH and rear door RH closed	-
   RL Door Courtesy SW	Rear door courtesy light switch LH signal/ON or OFF	ON: Rear door LH open and rear door RH closed ON: Rear door LH closed and rear door RH open ON: Rear door LH and rear door RH open OFF: Rear door LH and rear door RH closed	-

   OK

   Normal conditions listed above are displayed.

   Result

   Result	Proceed to
   OK	A
   Rear door courtesy light switch LH and RH do not operate	B

B → See step   2 

A → See step   4 

1. Remove the rear door courtesy light switch assembly. Refer to REMOVAL .
2. Inspect the rear door courtesy light switch assembly. Refer to INSPECTION .

   OK

   Rear door courtesy light switch assembly is normal.

NG → See step   6 

OK: Go to next step 

1. Disconnect the L7 main body ECU (multiplex network body ECU) connector.
2. Disconnect the R13 rear door courtesy light switch assembly LH connector.
3. Disconnect the S10 rear door courtesy light switch assembly RH connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L7-6 (LRCY) - R13-1	Always	Below 1 Ω
   L7-6 (LRCY) - Body ground	Always	10 kΩ or higher
   L7-6 (LRCY) - S10-1	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   5