NAVIGATION SYSTEM Switch Lights of Remote Touch do not Illuminate

DESCRIPTION

Power is supplied to the remote touch illumination when the light control switch is in the tail or head position.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   CONFIRM SYMPTOMS

   
   
   1. 

      Perform the following procedure and check the switch illumination again.

      
      

      1. When the vehicle is in a bright area, move it to a dark area.

         Tip:

         When the vehicle is in a bright area, the switch illumination may not turn on due to the automatic dimmer function.

      2. Set the rheostat to the maximum brightness.

         Tip:

         If the brightness of the rheostat is set to low, switch illumination may not be recognized even when the switch illumination turns on.

      3. If the light control switch is in the AUTO position, turn the switch to the tail or head position.

         Tip:

         If the light control switch is in the AUTO position, the switch illumination will not turn on unless the surrounding area is dark.

         OK
         Switch illumination turns on.

         Table 1. Text in Illustration

         *a	Switch Illumination

   
   
   • OKClick here
   • NGClick here
2. Click here

   END

3. Click here

   REMOTE TOUCH SELF CHECK (SWITCH ILLUMINATION CHECK)

   
   

   1. Activate self check mode (Click here).

   2. 

      Check switch illumination.

      
      

      1. Move the remote touch switch knob from the lower left to the upper right to check that the brightness of the switch illumination changes.

         OK
         The switch illumination brightness changes according to the remote touch switch knob operation.

         Table 2. Text in Illustration

         *a	Switch Illumination
         *b	Switch Knob

   
   
   • OKClick here
   • NGClick here
4. Click here

   CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)

   
   
   1. 

      Disconnect the remote touch (remote operation board) connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition L169-9 (ILL+) - Body ground Light control switch in tail or head position 11 to 14 V

      Table 3. Text in Illustration

      *a	Front view of wire harness connector (to Remote Touch [Remote Operation Board])

   
   
   • OKClick here
   • NGClick here
5. Click here

   CHECK HARNESS AND CONNECTOR (REMOTE TOUCH [REMOTE OPERATION BOARD] - NO. 1 METER ECU SUB-ASSEMBLY)

   
   

   1. Disconnect the L169 remote touch (remote operation board) connector.

   2. Disconnect the L124 No. 1 meter ECU sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition L169-16 (ILL-) - L124-16 (ILL-) Always Below 1 Ω L169-16 (ILL-) - Body ground Always 10 kΩ or higher

   
   
   • OKClick here
   • NGClick here
6. Click here

   REPLACE REMOTE TOUCH (REMOTE OPERATION BOARD)

   
   

   1. Replace the remote touch (remote operation board) with a new or known good one (Click here).

   2. Check if the switch illumination turns on.

      OK
      The switch illumination turns on when the light control switch is in the tail or head position.

   
   
   • OKClick here
   • NGClick here
7. Click here

   END (REMOTE TOUCH [REMOTE OPERATION BOARD] IS DEFECTIVE)

8. Click here

   REPLACE REMOTE TOUCH (REMOTE OPERATION SWITCH)

   
   

   1. Replace the remote touch (remote operation switch) with a new or known good one (Click here).

   2. Check if the switch illumination turns on.

      OK
      The switch illumination turns on when the light control switch is in the tail or head position.

   
   
   • OKClick here
   • NGClick here
9. Click here

   END (REMOTE TOUCH [REMOTE OPERATION SWITCH] IS DEFECTIVE)

10. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

11. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

12. Click here

    GO TO METER / GAUGE SYSTEMClick here

13. Click here

    REPLACE REMOTE TOUCH (REMOTE OPERATION BOARD)Click here