Illumination Circuit

LIGHTING: LIGHTING SYSTEM: Illumination Circuit
- Illumination Circuit

DESCRIPTION

The main body ECU receives information regarding the door courtesy switch and door lock position switch, and turns on the room light assembly.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (ILLUMINATED ENTRY SYSTEM)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Turn the room light switch to the DOOR position.

(e) All doors closed (door courtesy switches OFF).

(f) Enter the following menus: Body Electrical / Main Body / Active Test.

(g) According to the display on the Techstream, perform the Active Test.

Main Body





OK:

The illuminated entry system operates normally when operating it through the Techstream.

NG -- INSPECT NO. 1 ROOM LIGHT ASSEMBLY

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures

2. INSPECT NO. 1 ROOM LIGHT ASSEMBLY

(a) Remove the No. 1 room light assembly Removal.





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(c) Apply battery voltage to the terminal and check that the room light illuminates.

OK:





Text in Illustration





NG -- REPLACE NO. 1 ROOM LIGHT ASSEMBLY Removal
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (BATTERY - ROOM LIGHT ASSEMBLY AND MAIN BODY ECU)

(a) Disconnect the 2K main body ECU connector.





(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU