Pinpoint Test A : The Brake Shift Interlock System Does Not Release/Lock Correctly

External Controls

Pinpoint Tests

NOTE: Read and record all DTCs.

PINPOINT TEST A : THE BRAKE SHIFT INTERLOCK SYSTEM DOES NOT RELEASE/LOCK CORRECTLY

A1 CHECK DTCs

- Ignition ON.

- Connect the scan tool.

Are DTCs B1319:11 and/or B1319:15 set?

Yes
GO to A2.

No
GO to A7.

A2 CHECK THE BCM (Body Control Module) FUSE 18 (10A)

- Ignition OFF.

- Remove Body Control Module (BCM) fuse 18 (10A).

- Check fuse: BCM (Body Control Module) 18 (10A).

Is the resistance less than 5 ohms?

Yes
Reinstall the fuse. GO to A3.

No
GO to A4.

A3 CHECK THE BCM (Body Control Module) POWER CIRCUIT

- Disconnect: Floor Shifter Harness C3245.

- Inspect for damaged or pushed out terminals. Repair as necessary.

- Ignition ON.

- Measure the voltage between the floor shifter harness C3245, circuit CET53 (BU/OG) and ground while applying the brake pedal.

Is the voltage greater than 10 volts?

Yes
GO to A6.

No
GO to A5.

A4 CHECK THE BSIA (Brake Shift Interlock Actuator) POWER CIRCUIT FOR A SHORT TO GROUND

- Disconnect: BCM (Body Control Module) C2280B.

- Measure the resistance between floor shifter harness C3245-3, circuit CET53 (BU/OG) harness side and ground.






Is the resistance greater than 10,000 ohms?

Yes
INSTALL a new BCM (Body Control Module). TEST the system for normal operation.

No
REPAIR circuit CET53 (BU/OG) for a short to ground. CLEAR the DTCs. TEST the system for normal operation.

A5 CHECK THE BSIA (Brake Shift Interlock Actuator) POWER CIRCUIT FOR AN OPEN

- Measure the resistance between floor shifter harness C3245-3, circuit CET53 (BU/OG) and BCM (Body Control Module) C2280B-49, circuit CET53 (BU/OG).






Is the resistance less than 5 ohms?

Yes
INSTALL a new BCM (Body Control Module). TEST the system for normal operation.

No
REPAIR circuit CET53 (BU/OG) for an open. CLEAR the DTCs. TEST the system for normal operation.

A6 CHECK THE BSIA (Brake Shift Interlock Actuator) GROUND CIRCUIT FOR AN OPEN

- Ignition OFF.

- Measure the resistance between floor shifter harness C3245-4, circuit GD115 (BK/GY) and ground.






Is the resistance less than 5 ohms?

Yes
GO to A7.

No
REPAIR circuit GD112 (BK/GN) for an open. CLEAR the DTCs. TEST the system for normal operation.

A7 CHECK THE BSIA (Brake Shift Interlock Actuator) WITH THE SELECTOR LEVER CABLE DISCONNECTED

- If disconnected, connect the floor shifter harness C3245.

- Disconnect the selector lever cable at the selector lever.

- Ignition ON.

- Apply the brake pedal and move the selector lever out of the PARK position.

Does the BSIA (Brake Shift Interlock Actuator) release the selector lever?

Yes
CHECK the selector lever cable function and adjust the cable if necessary. REFER to Selector Lever Cable Adjustment Adjustments.

No
INSTALL a new BSIA (Brake Shift Interlock Actuator). REFER to Selector Lever Selector Lever. TEST the system for normal operation.

NOTE: Read and record all DTCs.