Parking Brake Switch Circuit (From 08/2009): Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
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
   Parking Brake SW	Parking brake switch 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 COMPONENTS .
   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	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.
   Fig 2: Identifying 2F Instrument Panel Junction Block Assembly & A49 Parking Brake Switch Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the A49 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
   A49-1 - 2F-32	Always	Below 1 Ω
   A49-1 - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Instrument Panel Junction Block Assembly)
   *2	Front view of wire harness connector (to Parking Brake Switch Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the instrument panel junction block assembly.
   Fig 3: Identifying PKB Terminal

   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-32 - A-12 (PKB)	Always	Below 1 Ω
   2F-32 - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

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

NG → REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

OK → See step   7