Lighting System Luggage Room Light Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST BY INTELLIGENT TESTER

INSPECT FUSE (RR-B)

REPLACE ROOM LIGHT (LUGGAGE)

CHECK WIRE HARNESS (COWL SIDE JUNCTION BLOCK ECU LH - BATTERY)

INSPECT LUGGAGE DOOR CLOSER (LUGGAGE DOOR COURTESY SWITCH)

CHECK WIRE HARNESS (COWL SIDE JUNCTION BLOCK ECU LH - LUGGAGE DOOR CLOSER - BODY GROUND)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Select the Active Test, use the intelligent tester to generate a control command, and then check that the room light (luggage) illuminates.
   
   

   Cowl side junction block ECU LH:

   
   

   Item	Test Details	Diagnostic Note
   Luggage Light control	Luggage light control ON / OFF	-

   OK:

   Luggage room light illuminates.
   

1. Remove the RR-B fuse from the No. 1 junction block assembly.
   

2. Measure the resistance of the fuse.
   

   Standard resistance:

   Below 1 Ω
   

1. Temporarily replace the room light (luggage) with a new or normally functioning one.
   

2. Turn the room light switch ON.
   

3. Check that the light illuminates.
   

   OK:

   Room light illuminates.
   

1. Disconnect the W3 ECU connector.
   

2. Measure the voltage of the wire harness side connector.
   

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   W3-3 (LGCY) - Body ground	Room light switch ON	10 to 14 V
   W3-3 (LGCY) - Body ground	Room light switch OFF	0 V

OK:

Luggage door closer (luggage door courtesy switch) is normal.

1. Disconnect the W3 ECU connector.
   

2. Disconnect the a5 closer connector.
   

3. Measure the resistance of the wire harness side connectors.
   

   Standard resistance:

   Tester Connection	Specified Condition
   W3-8 (CCTY) - a5-4 (CTY)	Below 1 Ω
   W3-8 (CCTY) or a5-4 (CTY) - Body ground	10 kΩ or higher
   a5-3 (E) - Body ground	Below 1 Ω