Parking Brake Switch Circuit [10/2014 - ]: 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.

Result: 

NG 

GO TO BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result: 

OK 

See step  2

1. Disconnect the E5 radio and display receiver assembly connector.
2. Disconnect the A27 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
   E5-15 (PKB) - A27-1	Always	Below 1 Ω
   E5-15 (PKB) - Body ground	Always	10 kΩ or higher

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [10/2014 - 10/2015] or PROBLEM SYMPTOMS TABLE [10/2015 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR