Inspection Procedure

1. Check that the brake warning light comes on when the parking brake is applied and goes off when it is released.

   OK: 

   The brake warning light operates as specified above. 

OK:  Go to step  3

NG: Go to next step 

1. Remove the parking brake switch.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE REFERENCE
   
   

   Tester connection	Condition	Specified condition
   Switch connector - Switch body	ON (When shaft is not pressed)	Below 1 Ω
   Switch connector - Switch body	OFF (When shaft is pressed)	10 kΩ or higher

   Fig 1: Removing Parking Brake Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE PARKING BRAKE SWITCH 

OK: Go to next step 

1. Disconnect the multi-display connector J50 and parking brake switch connector A25 or J88.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE REFERENCE
   
   

   Tester connection	Condition	Specified condition
   PKB - A25-1 (A/T)	Always	Below 1 Ω
   PKB - J88-1 (M/T)	Always	Below 1 Ω
   PKB - Body ground	Always	10 kΩ or higher

Fig 2: Identifying Multi-Display Connector J50 And Parking Brake Switch Connector A25 Or J88
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE