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»(ref-357194-S23092184732010030800000) or «Symptom Chart - NVH»(ref-357194-S39144963672010030800000) .
| 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 | 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 . |
Symptom Chart - External Controls
| Condition | Possible Sources | Action |
|---|
| Brake shift interlock system does not release/lock correctly | Circuitry open/shorted Smart Junction Box (SJB) fuse 5 (10A) Brake Pedal Position (BPP) switch | Go to Pinpoint Test A . |
| Brake Shift Interlock Actuator (BSIA) | INSTALL a new selector lever assembly. REFER to Selector Lever . |
| Transmission Range (TR) sensor | DIAGNOSE and REPAIR all TR sensor DTCs. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F27E article. |
| Transmission Control Switch (TCS) does not operate correctly | Instrument Cluster (IC) Circuitry open/shorted Battery Control Module (BCM) fuse 26 (10A) PCM TCS | Go to Pinpoint Test B . |
| Selector lever linkage is out of correct gear relationship | Selector lever linkage out of adjustment | REFER to Selector Lever Cable Adjustment . |
| Loose selector lever cable bracket | CHECK the selector lever cable bracket. TIGHTEN as necessary. |
SYMPTOM CHART - EXTERNAL CONTROLS
Symptom Chart - NVH
Note. NVH symptoms should be identified using the diagnostic tools that are available. For a list of these tools, an explanation of their uses and a glossary of common terms, refer to NOISE, VIBRATION AND HARSHNESS article. Since it is possible any one of multiple systems may be the cause of a symptom, it may be necessary to use a process of elimination type of diagnostic approach to pinpoint the responsible system. If this is not the causal system for the symptom, refer back to NOISE, VIBRATION AND HARSHNESS article for the next likely system and continue diagnosis.
| Condition | Possible Sources | Action |
|---|
| Vibration - a high frequency (20-80 Hz) that is felt through the seat or selector lever. Changes with engine speed | Selector lever cable incorrectly routed, grounded out or loose | CHECK the selector lever cable. REPAIR as necessary. |
Scheme 4
Scheme 4: Electrical Connectors
| Pin Number | Circuit | Circuit Function |
|---|
| 1 | CET53 (BU/OG) | Brake Shift Interlock Actuator (BSIA) power circuit |
| 2 | CDC41 (WH/BN) | PARK position signal to ignition switch |
| 3 | VLN04 (VT/GY) | Power to PRNDL bulb |
| 4 | GD138 (BK/WH) | Ground |
| 5 | CET34 (BN/GN) | Transmission Control Switch (TCS) signal |
| 6 | CBB26 (BU/WH) | TCS power circuit |
Scheme 5
| Pin Number | Circuit | Circuit Function |
|---|
| 1 | CET53 (OG) | Brake Shift Interlock Actuator (BSIA) power circuit |
| 2 | CDC41 (RD) | PARK position signal to ignition switch |
| 3 | VLN04 (BU) | Power to PRNDL bulb |
| 4 | GD111 (BK) | Ground |
| 5 | CET34 (WH) | Transmission Control Switch (TCS) signal |
| 6 | CBP30 (BN) | TCS power circuit |
