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. |
| B108A:9E | Start Button: Signal Stuck On | Sets continuous when the BCM detects only one switch input circuit indicating open when the start button is released. |
| 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 | The BCM continuously monitors the control side of the run/start relay in the BJB. This DTC is set if the BCM detects an open or a short to ground on the control side of the run/start relay. When this DTC sets, the BCM disables the control side of the RUN/START relay FET. 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. |
Possible Causes
- Battery voltage concern
- Fuse
- Wiring, terminals or connectors
- PATS concern
- Push button ignition switch
- BCM
- BJB
Visual Inspection and Diagnostic Pre-checks
- Inspect the battery and battery cables.
- Inspect the BCM fuse 4 (10A).