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
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A1 TEST THE BRAKE LIGHTS
- Apply the brake pedal and view the brake lights.
- Do the brake lights illuminate?
Yes
GO to A2.
No
REPAIR the brake lights, REFER to Exterior Lighting Testing and Inspection.
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A2 TEST BCM FUSE 18 (10A)
- Remove Body Control Module (BCM) fuse 18 (10A).
- Check fuse: BCM 18 (10A) .
- Is the resistance less than 5 ohms?
Yes
REINSTALL the fuse. GO to A4.
No
GO to A3.
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A3 CHECK BCM FOR AN INTERNAL SHORT
- Disconnect: BCM C2280B .
- Inspect for damaged or pushed-out terminals, corrosion or loose wires. Repair as necessary.
- Install a new fuse.
- Did the fuse fail?
Yes
INSTALL a new BCM. REFER to Multifunction Electronic Modules Service and Repair. RECONNECT all components. TEST the system for normal operation.
No
GO to A4.
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A4 CHECK THE BSIA POWER CIRCUIT FOR A SHORT TO GROUND
- Disconnect: Brake Shift Interlock Actuator (BSIA) C2008 .
- Disconnect: BCM C2280B.
- Inspect for damaged or pushed-out terminals, corrosion or loose wires. Repair as necessary.
- Measure the resistance between BSIA C2008-4, circuit CET53 (BU/OG), harness side 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. RECONNECT all components. CLEAR the DTC. TEST the system for normal operation.
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A5 CHECK THE BSIA POWER CIRCUIT FOR AN OPEN
- Measure the resistance between BSIA C2008-4, circuit CET53 (BU/OG), harness side and BCM C2280B-49, circuit CET53 (BU/OG), harness side.
- Is the resistance less than 5 ohms?
Yes
GO to A6.
No
REPAIR circuit CET53 (BU/OG) for an open. RECONNECT all components. CLEAR the DTC. TEST the system for normal operation.
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A6 TEST THE BSIA GROUND CIRCUIT FOR AN OPEN
- Measure the resistance between BSIA C2008-1, circuit GD115 (BK/GY), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
GO to A7.
No
REPAIR circuit GD115 (BK/GY) for an open. RECONNECT all components. CLEAR the DTC. TEST the system for normal operation.
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A7 TEST THE BSIA POWER CIRCUIT FOR VOLTAGE
- Connect: BCM C2008B.
- Ignition ON.
- Measure the voltage at the BSIA C2008-4, circuit CET53 (BU/OG), harness side, while applying the brake pedal.
- Is the voltage greater than 10 volts with the brake pedal applied?
Yes
INSTALL a new BSIA. REFER to Brake Shift Interlock Actuator Service and Repair. RECONNECT all components. CLEAR the DTC. TEST the system for normal operation.
No
INSTALL a new BCM. REFER to Multifunction Electronic Modules Service and Repair. RECONNECT all components. CLEAR the DTC. TEST the system for normal operation.
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