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

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

M1-M3:

M4-M7:

M8-M9:

Normal Operation
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 and the signal mirror (if equipped). 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 and the signal mirror (if equipped). Circuits GD123 (BK/GY) and GD120 (BK/GN) provide ground for the LH and RH front turn lamps, respectively. Circuits GD143 (BK/VT) and GD138 (BK/WH) provide ground for the LH and RH signal mirrors, respectively. The rear turn lamps are controlled utilizing the rear stoplamp circuitry.

DTC B2A27 - is 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.

DTC B2A28 - is 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.

DTC B2A29 - is 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.

DTC B2A2A - is 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.

Possible Causes
- Circuit CLS21 (BU/GN) open, short to ground or voltage
- Circuit CLS25 (YE/VT) open, short to ground or voltage
- Circuit GD120 (BK/GN) open
- Circuit GD123 (BK/GY) open
- Circuit GD138 (BK/WH) open
- Circuit GD143 (BK/VT) open
- Signal mirror
- SJB