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-271086-S29443949862007111500000) or Go to «Symptom Chart - Noise, Vibration and Harshness (NVH)»(ref-271086-S23612163682007111500000) .
| Mechanical | Electrical |
|---|
| Transaxle selector lever cable Manual control lever Transmission control module (TCM) out of adjustment (6-speed transaxle) Selector lever slider bunching or binding | Battery control module (BCM) fuse 14 (15A) Connections Wiring harness Brake pedal position (BPP) switch Shift lock actuator Transmission control (TC) switch (MKZ) |
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 . |
Symptom Chart - External Controls
| Condition | Possible Sources | Action |
|---|
| Brake shift interlock system does not release/lock correctly | Circuitry open/shorted Fuse(s) Stoplight switch | Go to Pinpoint Test A . |
| Brake shift interlock system does not release/lock correctly | Brake shift interlock actuator damaged or incorrectly installed after repair | INSTALL a new selector lever assembly. REFER to Selector Lever . |
| Transmission control (TC) switch does not operate correctly (MKZ only) | Instrument cluster Circuitry open/shorted Transmission control module (TCM) TC switch | Go to Pinpoint Test B . |
| Selector lever linkage is out of correct gear relationship | Selector lever cable is out of adjustment. Loose selector lever cable bracket | REFER to Selector Lever Cable Adjustment . CHECK the selector lever cable bracket. TIGHTEN as necessary. |
| Key stuck in the ignition cylinder or does not lock in the ignition cylinder when the selector lever is not in park | Ignition cylinder damaged Selector lever knob damaged Selector lever park detent switch damaged Selector lever pawl is not contacting park detent switch | CHECK the ignition lock cylinder, REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS . CHECK the selector lever knob button function by cycling the button. If the button is binding, INSTALL a new selector lever knob. REFER to Selector Lever Knob - 2.3L, 3.0L or Selector Lever Knob - 3.5L . CHECK the park detent switch signal, go to Pinpoint Test C . CHECK the selector lever for correct contact. |
| Selector lever binding | Selector lever bezel damaged Selector lever damaged Selector lever cable damaged Internal transaxle components damaged | CHECK the selector lever bezel for damage. If necessary, INSTALL a new selector lever bezel. REFER to Selector Lever Bezel . CHECK the selector lever for damage. If necessary, INSTALL a new selector lever assembly. REFER to Selector Lever . CHECK the selector lever cable for damage. If necessary, INSTALL a new selector lever cable. REFER to Selector Lever Cable . CHECK the manual control lever and internal transaxle components for damage. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 6 SPEED or AUTOMATIC TRANSAXLE/TRANSMISSION - FNR5 . |
| Brake shift interlock override does not release the selector lever | Shift interlock override damaged | INSPECT the selector lever for damage. If necessary, INSTALL a new selector lever. REFER to Selector Lever . |
Symptom Chart - External Controls
Symptom Chart - Noise, Vibration and Harshness (NVH)
Note. Noise, vibration and harshness (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 . 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 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. |
Symptom Chart - Noise, Vibration and Harshness (NVH)
Selector Lever Harness Connector C3233 (3.5L Engine). Scheme 62
Scheme 2: Selector Lever Harness Connector C3245 (3.0L Engine)
| Pin Number | Circuit | Circuit Function |
|---|
| 1 | VET13 (GY/BU) | Brake shift interlock actuator solenoid power circuit |
| 2 | CET22 (GY/BN) | Park position signal to ignition switch |
| 3 | CLN04 (BU/BN) | Power to PRNDL bulb |
| 4 | GD116 (BK/VT) | Ground |
Scheme 62: Selector Lever Harness Connector C3233 (3.5L Engine)
| Pin Number | Circuit | Circuit Function |
|---|
| 1 | VET13 (GY/BU) | Brake shift interlock actuator solenoid power circuit |
| 2 | CET22 (GY/BN) | Park position signal to ignition switch |
| 3 | | Not used |
| 4 | VLN04 (VT/GY) | Power to PRNDL bulb |
| 5 | GD116 (BK/VT) | Ground |
| 6 | CET34 (BN/GN) | O/D Cancel (MKZ) |
