Inspection and Verification
- Verify the customer concern by operating the transmission external control.
- Visually inspect for obvious signs of mechanical and electrical damage; refer to the following chart:VISUAL INSPECTION CHART
Mechanical Electrical - Damaged brake shift interlock actuator (BSIA)
- Damaged transmission control (TC) switch
- Failed fuse(s)
- Smart power distribution junction box (SPDJB) 5 (10A)
- Power distribution box (PDB) 31 (15A)
- Damaged wiring harness
- Loose or corroded connections
- If the fault is not visually evident, determine the symptom. Go to Symptom Chart .
DIAGNOSTIC TROUBLE CODE (DTC) CHART
| Five Digit DTC | Component | Description | Condition | Symptom | Action |
|---|---|---|---|---|---|
| B2572 | Brake shift interlock actuator (BSIA), wiring | BSIA concerns, shorted circuit | BSIA system malfunction | Brake shift interlock not locking. | Go to Pinpoint Test A . |