LIGHTING SYSTEM Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) detects the condition of the courtesy light switch.

CAUTION / NOTICE / HINT

PROCEDURE

1. Click here

   READ VALUE USING GTS

   
   

   1. Read the Data List according to the display on the GTS.

      Click here

      
      
      1. Body Electrical > Main Body > Data List

         Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
         RR Door Courtesy SW	Rear door courtesy light switch assembly RH signal	OFF or ON	OFF: Rear door RH closed ON: Rear door RH open	-
         RL Door Courtesy SW	Rear door courtesy light switch assembly LH signal	OFF or ON	OFF: Rear door LH closed ON: Rear door LH open	-
         FR Door Courtesy SW	Front door courtesy light switch assembly RH signal	OFF or ON	OFF: Front door RH closed ON: Front door RH open	-
         FL Door Courtesy SW	Front door courtesy light switch assembly LH signal	OFF or ON	OFF: Front door LH closed ON: Front door LH open	-

      2. 
         
         10. 
             
         11. 
             
         12. 
             
         13. 
             
      
      
      1. Body Electrical > Main Body > Data List

         Tester Display
         RR Door Courtesy SW
         RL Door Courtesy SW
         FR Door Courtesy SW
         FL Door Courtesy SW

      2. 
         
         1. 
            
      3. 
         
         10. 
             
         11. 
             
         12. 
             
         13. 
             

      OK
      Normal conditions listed above are displayed.

      Result
      Result Proceed to OK A NG ("FR Door Courtesy SW" is abnormal) B NG ("FL Door Courtesy SW" is abnormal) C NG ("RR Door Courtesy SW" is abnormal) D NG ("RL Door Courtesy SW" is abnormal) E

   
   
   • A

     PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

   • BClick here
   • CClick here
   • DClick here
   • EClick here
2. Click here

   INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH

   
   

   1. Remove the front door courtesy light switch assembly RH.

      Click here

   2. Inspect the front door courtesy light switch assembly RH.

      Click here

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RHClick here

3. Click here

   CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU])

   
   

   1. Disconnect the L32 front door courtesy light switch assembly RH connector.

   2. Disconnect the G12 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition L32-1 - G12-6 (FRCY) Always Below 1 Ω L32-1 or G12-6 (FRCY) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   
   • OK

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

   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

4. Click here

   INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH

   
   

   1. Remove the front door courtesy light switch assembly LH.

      Click here

   2. Inspect the front door courtesy light switch assembly LH.

      Click here

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LHClick here

5. Click here

   CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU])

   
   

   1. Disconnect the L62 front door courtesy light switch assembly LH connector.

   2. Disconnect the G12 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition L62-1 - G12-1 (FLCY) Always Below 1 Ω L62-1 or G12-1 (FLCY) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   
   • OK

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

   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

6. Click here

   INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH

   
   

   1. Remove the rear door courtesy light switch assembly RH.

      Click here

   2. Inspect the rear door courtesy light switch assembly RH.

      Click here

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RHClick here

7. Click here

   CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

   
   

   1. Disconnect the L40 rear door courtesy light switch assembly RH connector.

   2. Disconnect the 5D*1 or 5H*2 instrument panel junction block assembly connector.

      
      

      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Table 1. for LHD Tester Connection Condition Specified Condition L40-1 - 5D-19 Always Below 1 Ω L40-1 or 5D-19 - Body ground Always 10 kΩ or higher
      Table 2. for RHD Tester Connection Condition Specified Condition L40-1 - 5H-26 Always Below 1 Ω L40-1 or 5H-26- Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

8. Click here

   CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

   
   
   1. 

      *a

      Component without harness connected (Instrument Panel Junction Block Assembly)

      -

      -

      for LHD:

      
      

      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.

         Click here

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

         Standard Resistance
         Tester Connection Condition Specified Condition 5D-19 - A-2 (RCTY) Always Below 1 Ω

   2. 

      *a

      Component without harness connected (Instrument Panel Junction Block Assembly)

      -

      -

      for RHD:

      
      

      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.

         Click here

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

         Standard Resistance
         Tester Connection Condition Specified Condition 5H-26 - A-2 (RCTY) Always Below 1 Ω

      Result
      Proceed to OK NG

   
   
   • OK

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

   • NG

     REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLYClick here

9. Click here

   INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH

   
   

   1. Remove the rear door courtesy light switch assembly LH.

      Click here

   2. Inspect the rear door courtesy light switch assembly LH.

      Click here

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LHClick here

10. Click here

    CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

    
    

    1. Disconnect the L67 rear door courtesy light switch assembly LH connector.

    2. Disconnect the 5H*1 or 5A*2 instrument panel junction block assembly connector.

       
       

       • *1: for LHD

       • *2: for RHD

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

       Standard Resistance
       Table 3. for LHD Tester Connection Condition Specified Condition L67-1 - 5H-26 Always Below 1 Ω L67-1 or 5H-26 - Body ground Always 10 kΩ or higher
       Table 4. for RHD Tester Connection Condition Specified Condition L67-1 - 5A-42 Always Below 1 Ω L67-1 or 5A-42 - Body ground Always 10 kΩ or higher

       Result
       Proceed to OK NG

    
    
    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

11. Click here

    CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    
    
    1. 

       *a

       Component without harness connected (Instrument Panel Junction Block Assembly)

       -

       -

       for LHD:

       
       

       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.

          Click here

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

          Standard Resistance
          Tester Connection Condition Specified Condition 5H-26 - A-13 (LCTY) Always Below 1 Ω

    2. 

       *a

       Component without harness connected (Instrument Panel Junction Block Assembly)

       -

       -

       for RHD:

       
       

       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.

          Click here

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

          Standard Resistance
          Tester Connection Condition Specified Condition 5A-42 - A-13 (LCTY) Always Below 1 Ω

       Result
       Proceed to OK NG

    
    
    • OK

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

    • NG

      REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLYClick here