Inspection and Verification

Verify the customer concern by operating the system.
Visually inspect for obvious signs of mechanical or electrical damage.
If an obvious cause for an observed or reported concern is found, correct the cause before proceeding to the next step.
If the concern is not visually evident, verify the symptom. Go to Symptom Chart - External Controls or Symptom Chart - NVH .

VISUAL INSPECTION CHART

Mechanical	Electrical
Selector lever cable Manual control lever Selector lever or selector lever knob	Smart Junction Box (SJB) fuse 5 (10A) Battery Control Module (BCM) fuse 26 (10A) Connections Wiring harness Brake Pedal Position (BPP) switch Brake Shift Interlock Actuator (BSIA) Transmission Control Switch (TCS)

DTC CHART

DTC	Component	Description	Condition	Symptom	Action
B2572	Brake Shift Interlock	Brake Shift Interlock Output Circuit Failure	The associated circuitry connected to the Smart Junction Box (SJB) or fuse, or the SJB itself may have an issue causing a brake shift interlock concern.	Brake shift interlock is inoperative or does not operate correctly.	Go to Pinpoint Test A .