LIGHTING SYSTEM Luggage Compartment Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) detects the condition of the luggage compartment door lock assembly using this circuit.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM

   
   

   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
      Luggage Courtesy SW	Luggage compartment door courtesy switch signal/ON or OFF	ON: Luggage compartment door open OFF: Luggage compartment door closed	-

      OK
      Normal conditions listed above are displayed.

   
   

   NG

   INSPECT LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY Click here

   OK

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

2. INSPECT LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY

   
   

   1. Remove the luggage compartment door lock assembly Click here.

   2. Inspect the luggage compartment door lock assembly Click here.

      OK
      Luggage compartment door lock assembly is normal.

   
   

   NG

   REPLACE LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY Click here

   OK

3. CHECK HARNESS AND CONNECTOR (LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

   
   

   1. Disconnect the 3C instrument panel junction block assembly connector.

   2. Disconnect the T3 luggage compartment door lock assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition T3-3 (D+) - 3C-9 Always Below 1 Ω T3-3 (D+) - Body ground Always 10 kΩ or higher T3-2 (E) - Body ground Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

   
   

   1. Remove the instrument panel junction block assembly Click here.

   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.

      

      Text in Illustration

      *a

      Component without harness connected (Instrument Panel Junction Block Assembly)

      -

      -

      Standard Resistance
      Tester Connection Condition Specified Condition 3C-9 - MB-4 (LGCY) Always Below 1 Ω

   
   

   NG

   REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

   OK

   REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here