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.
Pinpoint Test F : No Power In On - Push Button Ignition Switch: Notes
Refer to Power Distribution/BCM for schematic and connector information.
Refer to Starting System for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description .
BCM DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B108A:01 | Start Button: General Electrical Failure | Sets continuous when the BCM detects a fault from one of the ignition switch input circuits. |
| B108A:24 | Start Button: Signal Stuck High | Sets continuous when the BCM detects a fault from one of the ignition switch input circuits. |
| B1142:29 | Ignition Status 1: Signal Invalid | Sets during the on-demand self-test when the BCM detects a fault from one of the ignition switch input circuits. |
| B1310:12 | Run/Start Control: Circuit Short to Battery | Sets when the BCM detects a short to voltage on the BJB run/start relay control circuit. When set, the control side of the run/start relay is disabled via the Field Effect Transistor (FET) in the BCM. Once the condition that caused the DTC to set is repaired, the BCM must pass a self-test in order for the DTC to clear and the system to resume normal operation. |
| B1310:14 | Run/Start Control: Circuit Short to Ground or Open | Sets when the BCM detects an open or a short to ground on the BJB run/start relay coil control circuit. |
Possible Causes
- Battery voltage concern
- Fuse
- Wiring, terminals or connectors
- PATS concern
- Push button ignition switch
- BCM
Visual Inspection and Diagnostic Pre-checks
- Inspect the battery and battery cables.
- Inspect the BCM fuse 18 (5A).
- Inspect the BCM fuse 34 (30A).
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.