Milan, MKZ
When the SJB detects the multifunction switch in the LH TURN position, the SJB provides on/off voltage through circuit CLS21 (BU/GN) to the LH front turn lamp, and through circuit CLS18 (GY/BN) to the LH rear turn lamp. When the SJB detects the multifunction switch in the RH TURN position, the SJB provides on/off voltage through circuit CLS25 (YE/VT) to the RH front turn lamp, and through circuit CLS19 (VT/OG) to the RH rear turn lamp. Circuits GD123 (BK/GY) and GD121 (BK/YE) provide ground for the LH and RH front turn lamps, respectively. Circuit GD171 (BK/GY) provides ground for the rear turn lamps.
For MKZ vehicles equipped with daytime running lamps (DRL), the front turn lamps are utilized as the DRL.
| DTC Description | Fault Trigger Conditions |
|---|---|
| B1799 - Lamp Turn Signal Front Output Circuit Open | A continuous DTC that sets when the SJB detects an open on either front turn lamp voltage supply circuit. |
| B1801 - Lamp Turn Signal Front Output Circuit Short To Ground | A continuous DTC that sets when the SJB detects a short to ground on either front turn lamp voltage supply circuit. |
| B2048 - Left Rear Turn Lamp Circuit Short to Ground | A continuous DTC that sets when the SJB detects a short to ground on the LH rear stop/turn lamp voltage supply circuit. |
| B2049 - Left Rear Turn Lamp Circuit Open | A continuous DTC that sets when the SJB detects an open on the LH rear stop/turn lamp voltage supply circuit. |
| B2050 - Right Rear Turn Lamp Circuit Short to Ground | A continuous DTC that sets when the SJB detects a short to ground on the RH rear stop/turn lamp voltage supply circuit. |
| B2051 - Right Rear Turn Lamp Circuit Open | A continuous DTC that sets when the SJB detects an open on the RH rear stop/turn lamp voltage supply circuit. |
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- SJB