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

External Controls

Pinpoint Tests

NOTE: Refer to all TSBs and On-Line Automotive Service Information System (OASIS) messages that pertain to the transmission concern and follow the procedure as described.

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

NOTE: Perform a thorough inspection of the selector lever cable before proceeding with this pinpoint test.

D1 TEST THE BRAKE LIGHTS

- Apply the brake pedal and view the brake lights.

Do the brake lights illuminate?

Yes
GO to D2.

No
GO to Lighting and Horns.

D2 TEST SJB (Smart Junction Box) FUSE 5 (10A)

- Check fuse: Smart Junction Box (SJB) 5 (10A).

Is the resistance less than 5 ohms?

Yes
GO to D4.

No
GO to D3.

D3 TEST CIRCUIT CET53 (BU/OG) FOR A SHORT TO GROUND

- Disconnect: Brake Shift Interlock Actuator (BSIA) C2127.

- Disconnect: SJB (Smart Junction Box) C2280C.

- Check to make sure the Brake Shift Interlock Actuator (BSIA) C2127 and SJB (Smart Junction Box) C2280C are fully seated, the terminals are fully engaged in the connectors and are in good condition before proceeding.

- Measure the resistance between BSIA (Brake Shift Interlock Actuator) C2008-3, circuit CET53 (BU/OG), harness side and ground.





Is the resistance greater than 10,000 ohms?

Yes
GO to D4.

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

D4 TEST CIRCUIT CET53 (BU/OG) FOR AN OPEN

- Measure the resistance between BSIA (Brake Shift Interlock Actuator) C2127-3, circuit CET53 (BU/OG) and SJB (Smart Junction Box) C2280C-23, circuit CET53 (BU/OG), harness side.





Is the resistance less than 5 ohms?

Yes
GO to D5.

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

D5 TEST CIRCUIT GD114 (BK/BU) FOR AN OPEN

- Measure the resistance between BSIA (Brake Shift Interlock Actuator) C2127-1, circuit GD114 (BK/BU), harness side and ground.





Is the resistance less than 5 ohms?

Yes
GO to D6.

No
REPAIR circuit GD114 (BK/BU) for an open. CLEAR the DTCs. TEST the system for normal operation.

D6 TEST CIRCUIT CET53 (BU/OG) FOR VOLTAGE

- Connect: SJB (Smart Junction Box) C2280C.

- Ignition ON.

- Measure the voltage between BSIA (Brake Shift Interlock Actuator) C2127-3, circuit CET53 (BU/OG), harness side and ground, while applying the brake pedal.





Is the voltage greater than 10 volts with the brake pedal applied?

Yes
INSTALL a new BSIA (Brake Shift Interlock Actuator). REFER to Brake Shift Interlock Actuator Service and Repair. CLEAR the DTCs. TEST the system for normal operation.

No
INSTALL a new SJB (Smart Junction Box). CLEAR the DTCs. TEST the system for normal operation.