Normal Operation
WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
When the smart junction box (SJB) detects the multifunction switch in the LH TURN position, the SJB provides voltage through circuit CLS21 (BU/GN) to the LH front turn lamp. When the SJB detects the multifunction switch in the RH TURN position, the SJB provides voltage through circuit CLS25 (YE/VT) to the RH front turn lamp. Circuits GD123 (BK/GY) and GD120 (BK/GN) provide ground for the LH and RH front turn lamps, respectively. The rear turn lamps are controlled utilizing the rear stoplamp circuitry.
| DTC Description | Fault Trigger Conditions |
|---|---|
| B2A27 - Right Front Turn Lamp Circuit Open | An on-demand DTC that sets when the SJB detects an open or short to voltage on the RH front turn lamp voltage supply circuit. |
| B2A28 - Right Front Turn Lamp Circuit Short to Ground | A continuous and on-demand DTC that sets when the SJB detects a short to ground on the RH front turn lamp voltage supply circuit. |
| B2A29 - Left Front Turn Lamp Circuit Open | An on-demand DTC that sets when the SJB detects an open or short to voltage on the LH front turn lamp voltage supply circuit. |
| B2A2A - Left Front Turn Lamp Circuit Short to Ground | A continuous and on-demand DTC that sets when the SJB detects a short to ground on the LH front turn lamp voltage supply circuit. |
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Joint connector
- Bulb holder (Edge)
- Headlamp assembly (MKX)
- SJB