LIGHTING SYSTEM Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU receives a door open/closed signal from each door courtesy light switch.

WIRING DIAGRAM

PROCEDURE

1. READ VALUE USING INTELLIGENT TESTER (DOOR COURTESY LIGHT SWITCH)

   
   

   1. Using the intelligent tester, read the Data List Click here.

      Main Body

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      D Door Courtesy SW	Front door courtesy light switch LH signal / ON or OFF	ON: Front door courtesy light switch LH on OFF: Front door courtesy light switch LH off	-
      P Door Courtesy SW	Front door courtesy light switch RH signal / ON or OFF	ON: Front door courtesy light switch RH on OFF: Front door courtesy light switch RH off	-
      RL Door Courtesy SW	Rear door courtesy light switch LH signal / ON or OFF	ON: Rear door courtesy light switch LH on OFF: Rear door courtesy light switch LH off	-
      RR Door Courtesy SW	Rear door courtesy light switch RH signal / ON or OFF	ON: Rear door courtesy light switch RH on OFF: Rear door courtesy light switch RH off	-
      Back Door Courtesy SW	Back door courtesy light switch signal / ON or OFF	ON: Back door courtesy light switch on OFF: Back door courtesy light switch off	-

      OK
      Door courtesy light switch on/off

   
   

   OK

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

   NG

2. CHECK DOOR COURTESY LIGHT SWITCH

   Result

   Result	Proceed to
   Front door courtesy light switch LH does not operate	A
   Front door courtesy light switch RH does not operate	B
   Rear door courtesy light switch LH does not operate	C
   Rear door courtesy light switch RH does not operate	D
   Back door courtesy light switch does not operate	E

   
   

   B

   INSPECT FRONT DOOR COURTESY LIGHT SWITCH RH Click here

   C

   INSPECT REAR DOOR COURTESY LIGHT SWITCH LH Click here

   D

   INSPECT REAR DOOR COURTESY LIGHT SWITCH RH Click here

   E

   INSPECT VEHICLE TYPE Click here

   A

3. INSPECT FRONT DOOR COURTESY LIGHT SWITCH LH

   
   

   1. Remove the front door courtesy light switch LH Click here.

   2. Inspect the front door courtesy light switch LH Click here.

   
   

   NG

   REPLACE FRONT DOOR COURTESY LIGHT SWITCH LH Click here

   OK

4. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH LH - MAIN BODY ECU [COWL SIDE JUNCTION BLOCK LH])

   
   

   1. Disconnect the K2 front door courtesy light switch LH connector.

   2. for LHD:

      
      

      1. Disconnect the E1 main body ECU connector.

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

         Standard Resistance
         Tester Connection Condition Specified Condition K2-1 - E1-24 (DCTY) Always Below 1 Ω K2-1 - Body ground Always 10 kΩ or higher

   3. for RHD:

      
      

      1. Disconnect the E2 main body ECU connector.

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

         Standard Resistance
         Tester Connection Condition Specified Condition K2-1 - E2-21 (PCTY) Always Below 1 Ω K2-1 - Body ground Always 10 kΩ or higher

   
   

   OK

   REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

5. INSPECT FRONT DOOR COURTESY LIGHT SWITCH RH

   
   

   1. Remove the front door courtesy light switch RH Click here.

   2. Inspect the front door courtesy light switch RH Click here.

   
   

   NG

   REPLACE FRONT DOOR COURTESY LIGHT SWITCH RH Click here

   OK

6. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH RH - MAIN BODY ECU [COWL SIDE JUNCTION BLOCK LH])

   
   

   1. Disconnect the L1 front door courtesy light switch RH switch connector.

   2. for LHD:

      
      

      1. Disconnect the E2 main body ECU connector.

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

         Standard Resistance
         Tester Connection Condition Specified Condition L1-1 - E2-21 (PCTY) Always Below 1 Ω L1-1 - Body ground Always 10 kΩ or higher

   3. for RHD:

      
      

      1. Disconnect the E1 main body ECU connector.

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

         Standard Resistance
         Tester Connection Condition Specified Condition L1-1 - E1-24 (DCTY) Always Below 1 Ω L1-1 - Body ground Always 10 kΩ or higher

   
   

   OK

   REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

7. INSPECT REAR DOOR COURTESY LIGHT SWITCH LH

   
   

   1. Remove the rear door courtesy light switch LH Click here.

   2. Inspect the rear door courtesy light switch LH Click here.

   
   

   NG

   REPLACE REAR DOOR COURTESY LIGHT SWITCH LH Click here

   OK

8. CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH LH - MAIN BODY ECU [COWL SIDE JUNCTION BLOCK LH])

   
   

   1. Disconnect the 2C main body ECU connector.

   2. Disconnect the K3 rear door courtesy light switch LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition K3-1 - 2C-2 (LCTY) Always Below 1 Ω K3-1 - Body ground Always 10 kΩ or higher

   
   

   OK

   REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

9. INSPECT REAR DOOR COURTESY LIGHT SWITCH RH

   
   

   1. Remove the rear door courtesy light switch RH Click here.

   2. Inspect the rear door courtesy light switch RH Click here.

   
   

   NG

   REPLACE REAR DOOR COURTESY LIGHT SWITCH RH Click here

   OK

10. CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH RH - MAIN BODY ECU [COWL SIDE JUNCTION BLOCK LH])

    
    

    1. Disconnect the L2 rear door courtesy light switch RH connector.

    2. except Double Swing Out Type:

       
       

       1. Disconnect the E2 main body ECU connector.

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

          Standard Resistance
          Tester Connection Condition Specified Condition L2-1 - E2-7 (RCTY) Always Below 1 Ω L2-1 - Body ground Always 10 kΩ or higher

    3. for Double Swing Out Type:

       
       

       1. Disconnect the E1 main body ECU connector.

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

          Standard Resistance
          Tester Connection Condition Specified Condition L2-1 - E1-17 (RCTY) Always Below 1 Ω L2-1 - Body ground Always 10 kΩ or higher

    
    

    OK

    REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

11. INSPECT VEHICLE TYPE

    
    

    1. Check the vehicle type.

       Result

       Result	Proceed to
       for Double Swing Out Type	A
       except Double Swing Out Type	B

    
    

    B

    INSPECT BACK DOOR LOCK ASSEMBLY Click here

    A

12. INSPECT BACK DOOR WITH MOTOR LOCK ASSEMBLY

    
    

    1. Remove the back door with motor lock assembly Click here.

    2. Inspect the back door with motor lock assembly Click here.

    
    

    NG

    REPLACE BACK DOOR WITH MOTOR LOCK ASSEMBLY Click here

    OK

13. CHECK HARNESS AND CONNECTOR (BACK DOOR WITH MOTOR LOCK ASSEMBLY - MAIN BODY ECU [COWL SIDE JUNCTION BLOCK LH] AND BODY GROUND)

    
    

    1. Disconnect E2 main body ECU connector.

    2. Disconnect W3 back door with motor lock connector.

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

       Standard Resistance
       Tester Connection Condition Specified Condition W3-2 (+) - E2-25 (BCTY) Always Below 1 Ω W3-1 (E) - Body ground W3-2 (+) - Body ground Always 10 kΩ or higher

    
    

    OK

    REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

14. INSPECT BACK DOOR LOCK ASSEMBLY

    
    

    1. Remove the back door lock Click here.

    2. Inspect the back door lock Click here.

    
    

    NG

    REPLACE BACK DOOR LOCK ASSEMBLY Click here

    OK

15. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - MAIN BODY ECU [COWL SIDE JUNCTION BLOCK LH] AND BODY GROUND)

    
    

    1. Disconnect the E2 main body ECU connector.

    2. w/o Power Back Door:

       
       

       1. Disconnect the S1 back door lock connector.

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

          Standard Resistance
          Tester Connection Condition Specified Condition S1-3 (+) - E2-25 (BCTY) Always Below 1 Ω S1-1 (ACT-) - Body ground S1-3 (+) - Body ground Always 10 kΩ or higher

    3. w/ Power Back Door:

       
       

       1. Disconnect the S22 back door lock connector.

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

          Standard Resistance
          Tester Connection Condition Specified Condition S22-3 (CTY) - E2-25 (BCTY) Always Below 1 Ω S22-4 (E) - Body ground S22-3 (CTY) - Body ground Always 10 kΩ or higher

    
    

    OK

    REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR