Interior Light Circuit [10/2014 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Active Test.
5. Perform the Active Test according to the display on the Techstream.
   MAIN BODY
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Illuminated Entry System	Front interior light, rear interior light and engine switch illumination	ON/OFF	Interior door switch is on

   OK

   Each light fades in.

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [10/2014 - ] )

Result: 

NG 

See step  2

1. Remove the roof console box assembly (Refer to REMOVAL [10/2014 - ] ).
2. Inspect the roof console box assembly (Refer to INSPECTION [10/2014 - ] ).

   OK

   Roof console box assembly is normal.

Result: 

NG 

REPLACE ROOF CONSOLE BOX ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )

Result: 

OK 

See step  3

1. Disconnect the 3B instrument panel junction block assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N6-6 (CTY) - 3B-35	Always	Below 1 Ω
   N6-6 (CTY) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Remove the instrument panel junction block assembly (Refer to REMOVAL [10/2014 - ] ).
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
   3B-35 - MB-1 (ILE)	Always	Below 1 Ω

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

(Refer to REMOVAL [10/2014 - ] )

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )