Front Door Courtesy Switch Circuit [08/2013 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
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
   FR Door Courtesy	Front door courtesy light switch RH signal/ON or OFF	ON: Front door RH closed OFF: Front door RH open	-
   FL Door Courtesy	Front door courtesy light switch LH signal/ON or OFF	ON: Front door LH closed OFF: Front door LH open	-

   OK

   Normal conditions listed above are displayed.

   Result

   Result	Proceed to
   OK	A
   Front door courtesy light switch LH or RH does not operate	B

B → See step   2 

A → See step   7 

1. Remove the front door courtesy light switch assembly. Refer to REMOVAL [08/2013 - ] .
2. Inspect the front door courtesy light switch assembly. Refer to INSPECTION [08/2013 - ] .

   OK

   Front door courtesy light switch assembly is normal.

   Result

   Result	Proceed to
   OK (for Front LH)	A
   OK (for Front RH)	B
   NG	C

B → See step   5 

C → See step   6 

A: Go to next step 

1. Disconnect the 3C instrument panel junction block assembly connector.
2. Disconnect the N7 front door courtesy light switch assembly LH connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N7-1 - 3C-15	Always	Below 1 Ω
   N7-1 - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the instrument panel junction block assembly. Refer to REMOVAL [08/2013 - ] .
2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
3. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3C-15 - MB-2 (FLCY)	Always	Below 1 Ω

NG → See step   9 

OK → See step   8 

1. Disconnect the I13 main body ECU (multiplex network body ECU) connector.
2. Disconnect the O10 front door courtesy light switch assembly RH connector.
3. Disconnect the J2 courtesy light assembly RH connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O10-1 - I13-19 (FRCY)	Always	Below 1 Ω
   O10-1 - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   8