Parking Brake Switch Circuit: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Data List.
5. Read the display on the Techstream.
   MAIN BODY
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Parking Brake SW	Parking brake SW signal/ON or OFF	ON: Parking brake switch on OFF: Parking brake switch off	-

   OK

   Normal conditions listed above are displayed.

NG → See step   2 

OK → See step   5 

1. Remove the parking brake switch assembly. Refer to REMOVAL .
   Fig 1: Inspecting Parking Brake Switch Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   1 - Switch body	Shaft pushed in (OFF)	10 kΩ or higher
   1 - Switch body	Shaft not pushed in (ON)	Below 1 Ω

NG → See step   6 

OK: Go to next step 

1. Disconnect the 2F instrument panel junction block assembly connector.
2. Disconnect the A3 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
   2F-16 - A3-1	Always	Below 1 Ω
   2F-16 - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the instrument panel junction block assembly.
   Fig 2: Inspecting Instrument Panel Junction Block Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   2F-16 - 2I-12 (PKB)	Always	Below 1 Ω
   2F-16 - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Instrument Panel Junction Block Assembly)

NG → REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

OK → See step   7