Pinpoint Test A: The BSIA System Does Not Release/Lock Correctly

External Controls

Pinpoint Tests

PINPOINT TEST A: THE BSIA SYSTEM DOES NOT RELEASE/LOCK CORRECTLY

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A1 CHECK FOR DTCs


- Connect the scan tool.
- Ignition ON.
- Check for the following DTCs, P1572, P1703 or B1484.
- Are any of these DTCs set?

Yes
For DTCs P1572 or P1703, REFER to Cruise Control. For DTC B1484, REFER to Antilock Brakes / Traction Control Systems. [1][2]Diagnostic Trouble Code Descriptions

No
GO to A2.

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A2 CHECK CIRCUIT 810 (RD/LG) FOR VOLTAGE


- Disconnect: Brake Shift Interlock Actuator (BSIA)C2008.
- Measure the voltage between BSIA C2008-2, circuit 810 (RD/LG), harness side and ground, while applying and releasing the brake pedal.




- Is the voltage greater than 10 volts with the brake pedal applied and less than 5 volts with it released?

Yes
GO to A5.

No
GO to A3.

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A3 CHECK CIRCUIT 810 (RD/LG) FOR AN OPEN


- Disconnect: Lighting Control Module (LCM) C2145A.
- Measure the resistance between BSIA C2008-2 and LCM C2145A-6, circuit 810 (RD/LG), harness side.




- Is the resistance less than 5 ohms?

Yes
GO to A4.

No
REPAIR circuit 810 (RD/LG) for an open. If no open is found go to GO to A6. RECONNECT all components. TEST the system for normal operation.

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A4 CHECK CIRCUIT 810 (RD/LG) FOR A SHORT TO GROUND


- Measure the resistance between BSIA C2008-2, circuit 810 (RD/LG), harness side and ground.




- Is the resistance greater than 10,000 ohms?

Yes
GO to A7.

No
REPAIR circuit 810 (RD/LG) for a short to ground. RECONNECT all components. TEST the system for normal operation.

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A5 CHECK CIRCUIT 57 (BK) FOR AN OPEN


- Measure the resistance between BSIA C2008-1, circuit 57 (BK), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
REPLACE the BSIA. RECONNECT all components. TEST the system for normal operation.

No
REPAIR circuit 57 (BK) for an open. RECONNECT all components. TEST the system for normal operation.

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A6 CHECK CIRCUIT 810 (RD/LG) FOR A SHORT TO VOLTAGE


- Measure the voltage between BSIA C2008-2, circuit 810 (RD/LG), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
REPAIR circuit 810 (RD/LG) for a short to voltage. RECONNECT all components. TEST the system for normal operation.

No
GO to A7.

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A7 CHECK LCM BRAKE INPUT VOLTAGE


- Disconnect: LCMC2145B.
- Measure the voltage between LCM C2145B-5 and ground while applying and releasing the brake pedal.




- Is the voltage greater than 10 volts with the brake pedal applied and less than 5 volts with it released?

Yes
GO to A9.

No
GO to A8.

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A8 CHECK CIRCUIT 1651 (WH/RD) FOR AN OPEN


- Measure the resistance between the output side of Central Junction Box (CJB) fuse 28 (7.5A) and the LCM C2145B-5, circuit 1651 (WH/RD), harness side.




- Is the resistance less than 5 ohms?

Yes
INSTALL a new LCM. RECONNECT all components. TEST the system for normal operation.

No
REPAIR circuit 1651 (WH/RD) for an open. RECONNECT all components. TEST the system for normal operation.

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A9 CHECK CIRCUIT 640 (RD/YE) FOR AN OPEN


- Measure the resistance between the output side of Central Junction Box (CJB) fuse 26 (10A) and the LCM C2145A-5, circuit 640 (RD/YE), harness side.




- Is the resistance less than 5 ohms?

Yes
GO to A10.

No
REPAIR circuit 1651 (WH/RD) for an open. RECONNECT all components. TEST the system for normal operation.

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A10 CHECK CIRCUIT 640 (RD/YE) FOR A SHORT TO GROUND


- Measure the resistance between the output side of Central Junction Box (CJB) fuse 26 (10A) and ground.




- Is the resistance greater than 10,000 ohms?

Yes
INSTALL a new LCM. RECONNECT all components. TEST the system for normal operation.

No
REPAIR circuit 640 (RD/YE) for a short to ground. RECONNECT all components. TEST the system for normal operation.

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