Brake Lamp Switch Circuit

Test 1 Through 3:

Test 4 Through 6:

Symptom:
BRAKE LAMP SWITCH CIRCUIT

When Monitored and Set Condition:
BRAKE LAMP SWITCH CIRCUIT

When Monitored: Ignition on.

Set Condition: Brake switch applied starting at initial ignition on, and remaining applied until 10 seconds has elapsed with the vehicle speed above 59 Km/h (37 mph).

POSSIBLE CAUSES
INTERMITTENT DTC
BRAKE SWITCH GROUND CIRCUIT OPEN
BRAKE SWITCH SENSE CIRCUIT OPEN
BRAKE SWITCH (SENSE CIRCUIT)
CAB DEFECTIVE - BRAKE SWITCH SENSE CIRCUIT OPEN