NAVIGATION SYSTEM Parking Brake Switch Circuit

DESCRIPTION

This circuit is from the parking brake switch assembly to the multi-media module receiver assembly.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. 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

      Tech Tips

      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.

   
   

   NG

   CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH ASSEMBLY - MULTI-MEDIA MODULE RECEIVER ASSEMBLY) Click here

   OK

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

2. CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH ASSEMBLY - MULTI-MEDIA MODULE RECEIVER ASSEMBLY)

   
   

   1. Disconnect the E53 parking brake switch assembly connector.

   2. Disconnect the F76 multi-media module receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition F76-55 (PKB) - E53-1 Always Below 1 Ω F76-55 (PKB) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. 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 1 - Switch body ON (Shaft not pressed) Below 1 Ω OFF (Shaft pressed) 10 kΩ or higher

      Text in Illustration

      	ON
      	OFF

   
   

   NG

   REPLACE PARKING BRAKE SWITCH ASSEMBLY Click here

   OK

   REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here