Test N: One Turn Signal/Hazard Lamp Is Inoperative/Always On

PINPOINT TEST N: ONE TURN SIGNAL/HAZARD LAMP IS INOPERATIVE/ALWAYS ON

N1-N2:

N2-N4:

N5:

Normal Operation - Fusion
When the smart junction box (SJB) detects the multifunction switch in the LH TURN position, the SJB sends 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 sends voltage through circuit CLS25 (YE/VT) to the RH front turn lamp. Circuit GD123 (BK/GY) and circuit GD121 (BK/YE) provide ground for the LH and RH front turn lamps, respectively. The rear turn lamps are controlled utilizing the rear stoplamp circuitry.

Normal Operation - Milan
When the SJB detects the multifunction switch in the LH TURN position, the SJB sends 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 sends voltage through circuit CLS25 (YE/VT) to the RH front turn lamp, and through circuit CLS19 (VT/OG) to the RH rear turn lamp. Circuit GD123 (BK/GY) and circuit 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.

Normal Operation - MKZ
When the SJB detects the multifunction switch in the LH TURN position, the SJB sends 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 sends voltage through circuit CLS25 (YE/VT) to the RH front turn lamp, and through circuit CLS19 (VT/OG) to the RH rear turn lamp. Circuit GD123 (BK/GY) and circuit 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. On vehicles equipped with daytime running lamps (DRL), the front turn lamps are utilized as the DRL.

DTC B1799 - is a continuous code that sets when the SJB detects an open on either front turn lamp voltage supply circuit.

DTC B1801 - is a continuous code that sets when the SJB detects a short to ground on either front turn lamp voltage supply circuit.

DTC B2044 (early build) or B2048 (late build) - is a continuous code that sets when the SJB detects a short to ground on the LH rear stop/turn lamp voltage supply circuit.

DTC B2045 (early build) or B2049 (late build) - is a continuous code that sets when the SJB detects an open on the LH rear stop/turn lamp voltage supply circuit.

DTC B2046 (early build) or B2050 (late build) - is a continuous code that sets when the SJB detects a short to ground on the RH rear stop/turn lamp voltage supply circuit.

DTC B2047 (early build) or B2051 (late build) - is a continuous code that sets when the SJB detects an open on the RH rear stop/turn lamp voltage supply circuit.

Possible Causes
- Circuit CLS18 (GY/BN) open, short to ground or voltage
- Circuit CLS19 (VT/OG) open, short to ground or voltage
- Circuit CLS21 (BU/GN) open, short to ground or voltage
- Circuit CLS25 (YE/VT) open, short to ground or voltage
- Circuit GD121 (BK/YE) open
- Circuit GD123 (BK/GY) open
- Circuit GD171 (BK/GY) open
- SJB