Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
- 2
Verifies that DTC B2947 is a current DTC.
- 3
Tests for a short to ground in the Passlock™ sensor or the pigtail harness.
| Step | Action | Yes | No |
|---|---|---|---|
| 1 | Did you perform the Theft Deterrent Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Theft Deterrent |
| 2 |
|
Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
| 3 |
|
Go to Step 6 | Go to Step 4 |
| 4 | Test the Passlock™ battery voltage circuit for a short to ground. Refer to Circuit Testing
, and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 10 | Go to Step 5 |
| 5 | Inspect for poor connections at the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections
, and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 10 | Go to Step 7 |
| 6 | Inspect for poor connections at the Passlock™ sensor. Refer to Testing for Intermittent Conditions and Poor Connections
, and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 10 | Go to Step 8 |
| 7 |
IMPORTANT:
Replace the BCM. Refer to Body Control Module Replacement
in Body Control System.Did you complete the replacement?When replacing the BCM refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System. |
Go to Step 10 | - |
| 8 | Replace the Passlock™ Sensor. Refer to Electronic Column Lock Module - Disassemble - Off Vehicle
, and Electronic Column Lock Module - Assemble - Off Vehicle
in Steering Wheel and Column. Did you complete the replacement? |
Go to Step 9 | - |
| 9 | Perform the Passlock™ learn procedure. Refer to Programming Theft Deterrent System Components . Did you complete the procedure? |
Go to Step 10 | - |
| 10 |
|
Go to Step 3 | System OK |
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.