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

External Controls

Pinpoint Tests

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

A1 TEST THE BRAKE LIGHTS

- Apply the brake pedal and view the brake lights.

- Brake lamps should illuminate within 15 mm (0.59 in) of pedal travel

Do the brake lights illuminate within 15 mm (0.59 in) of pedal travel?

Yes
GO to A2.

No
REFER to Lighting and Horns.

A2 TEST SJB (Smart Junction Box) FUSE 5 (10A)

- Ignition OFF.

- Check fuse: 5 (10A).

Is the resistance less than 5 ohms?

Yes
GO to A3.

No
INSTALL a new fuse. GO to A3.

A3 TEST THE BSIA (Brake Shift Interlock Actuator) POWER CIRCUIT

- Disconnect: Selector Lever Harness C3245.

- Ignition ON.

- Measure the voltage between selector lever harness C3245-1, 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 A4.

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

- Ignition OFF.

- Disconnect: Smart Junction Box (SJB) C2280C.

- Measure the resistance between selector lever harness C3245-1, circuit CET53 (BU/OG) and ground.





Is the resistance greater than 10,000 ohms?

Yes
GO to A5.

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

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

- Measure the resistance between selector lever harness C3245-1, circuit CET53 (BU/OG) and SJB (Smart Junction Box) C2280C-23, circuit CET53 (BU/OG).





Is the resistance less than 5 ohms?

Yes
INSTALL a new SJB (Smart Junction Box). TEST the system for normal operation.

No
REPAIR circuit CET53 (BU/OG) for an open.

A6 TEST THE BSIA (Brake Shift Interlock Actuator) GROUND CIRCUIT

- Ignition OFF.

- Measure the resistance between selector lever harness C3245-4, circuit GD116 (BK/VT) and ground.





Is the resistance less than 5 ohms?

Yes
GO to A7.

No
REPAIR circuit GD116 (BK/VT). TEST the system for normal operation.

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

- Connect: Selector Lever 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 brake shift interlock system release the selector lever correctly?

Yes
Check selector cable function and adjust the cable If necessary. REFER to Selector Lever Cable Adjustment .

No
INSTALL a new selector lever. REFER to Selector Lever .