NAVIGATION SYSTEM Parking Brake Switch Circuit

DESCRIPTION

This circuit is from the parking brake switch assembly to the radio and display receiver assembly.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   CHECK VEHICLE SIGNAL (OPERATION CHECK)

   
   
   1. 

      Enter the "Function Check/Setting I" mode and select "Vehicle Signal" (Click here).

   2. Check that the display changes between ON and OFF according to the parking brake operation.

      OK
      Parking Brake Position Display Applied ON Released OFF

      Tip:

      This display is updated once per second. As a result, it is normal for the display to lag behind the actual change in the switch.

   
   
   • OKClick here
   • NGClick here
2. Click here

   CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH ASSEMBLY - RADIO AND DISPLAY RECEIVER ASSEMBLY)

   
   

   1. Disconnect the H106 radio and display receiver assembly connector.

   2. Disconnect the H17 parking brake switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition H106-6 (PKB) - H17-1 Always Below 1 Ω H106-6 (PKB) - Body ground Always 10 kΩ or higher

   
   
   • OKClick here
   • NGClick here
3. Click here

   INSPECT PARKING BRAKE SWITCH ASSEMBLY

   
   
   1. 

      Remove the parking brake switch assembly connector (Click here).

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition Switch connector terminal - Switch body ON (Shaft not pressed) Below 1 Ω OFF (Shaft pressed) 10 kΩ or higher

      Table 1. Text in Illustration

      	Released
      	Pushed in

   
   
   • OKClick here
   • NGClick here
4. Click here

   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLYClick here

5. Click here

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

6. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR

7. Click here

   REPLACE PARKING BRAKE SWITCH ASSEMBLYClick here