PINPOINT TEST C : No Power in RUN - Vehicles with a Conventional Ignition Switch: Notes
Diagnostic Overview
No Power in RUN - Vehicles with a Conventional Ignition Switch
Refer to Power Distribution/BCM for schematic and connector information.
Normal Operation and Fault Conditions
When the ignition switch is turned to the RUN position, a voltage signal is sent to the BCM. The BCM then activates the RUN/START relay and the RUN/ACC relay which distribute fused voltage to various components. The BCM uses a FET to control the RUN/START relay. The RUN/START relay receives voltage from BJB fuse 87 (5A).
The RUN/ACC relay is serviced as part of the BCM.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1310:14 | Run/Start Control: Circuit Short to Ground or Open | The BCM continuously monitors the control side of the RUN/START relay. This DTC is set if the BCM detects an open or a short to ground on the control circuit. When this DTC sets, the control side of the RUN/START relay is disabled via the 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. |
Visual Inspection and Diagnostic Pre-checks
Make sure BJB fuse 87 (5A) is OK.