POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM Tilt and Telescopic Manual Switch Circuit

DESCRIPTION

Different voltage values are sent to the multiplex tilt and telescopic ECU by operating the tilt and telescopic switch. The multiplex tilt and telescopic ECU then judges which motor and in which direction that motor should operate based on the voltage value.

PROCEDURE

1. Click here

   READ VALUE USING GTS (TILT MANUAL SWITCH UP/DOWN, TELESCOPIC MANUAL SWITCH SHORT/LONG)

   
   

   1. Turn the power switch off.

   2. Connect the GTS to the DLC3.

   3. Turn the power switch on (IG).

   4. Turn the GTS on.

   5. Check the tilt and telescopic switch.

   6. Enter the following menus: Body Electrical / Tilt & Telescopic / Data List.

      
      
      1. Body Electrical > Tilt&Telescopic > Data List

         Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
         Tilt Manual Switch Up	Input state of tilt up switch	ON or OFF	-	-
         Tilt Manual Switch Down	Input state of tilt down switch	ON or OFF	-	-
         Telescopic Manual Switch Short	Input state of telescopic contract switch	ON or OFF	-	-
         Telescopic Manual Switch Long	Input state of telescopic extend switch	ON or OFF	-	-

      2. 
         
         10. 
             
         11. 
             
         12. 
             
         13. 
             
      
      
      1. Body Electrical > Tilt&Telescopic > Data List

         Tester Display
         Tilt Manual Switch Up
         Tilt Manual Switch Down
         Telescopic Manual Switch Short
         Telescopic Manual Switch Long

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

      OK
      "ON" is displayed on the GTS screen when each switch is turned on.
      "OFF" is displayed on the GTS screen when each switch is turned off.

      Result
      Proceed to OK NG

   
   
   • OK

     REPLACE MULTIPLEX TILT AND TELESCOPIC ECUClick here

   • NGClick here
2. Click here

   CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - TILT AND TELESCOPIC SWITCH)

   
   

   1. Disconnect the G21 multiplex tilt and telescopic ECU connector.

   2. Disconnect the G25 tilt and telescopic switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition G21-5 (VC) - G25-1 (VC) Always Below 1 Ω G21-18 (MSW) - G25-3 (MSW) Always Below 1 Ω G21-5 (VC) or G25-1 (VC) - Body ground Always 10 kΩ or higher G21-18 (MSW) or G25-3 (MSW) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

3. Click here

   CHECK MULTIPLEX TILT AND TELESCOPIC ECU (VC TERMINAL VOLTAGE)

   
   
   1. 

      *a	Component with harness connected (Multiplex Tilt and Telescopic ECU)

      Reconnect the G21 multiplex tilt and telescopic ECU connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition G21-5 (VC) - G21-18 (MSW) Power switch on (IG) 4.9 to 5.1 V

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPLACE MULTIPLEX TILT AND TELESCOPIC ECUClick here

4. Click here

   INSPECT TILT AND TELESCOPIC SWITCH

   
   

   1. Inspect the tilt and telescopic switch.

      Click here

      Result
      Proceed to OK NG

   
   
   • OK

     REPLACE MULTIPLEX TILT & TELESCOPIC ECUClick here

   • NG

     REPLACE TILT AND TELESCOPIC SWITCHClick here