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

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

Normal Operation
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. For Sable, the SJB also provides on/off voltage to the LH rear lamp through circuit CLS23 (GY/OG).

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. For Sable, the SJB also provides on/off voltage to the RH rear lamp through circuit CLS24 (BN/WH).

For Taurus and Taurus X, the rear turn lamps are controlled utilizing the rear stoplamp circuitry.

Circuits GD123 (BK/GY) and GD120 (BK/GN) provide ground for the LH and RH front turn lamps, respectively. For Sable, the LH and RH rear turn lamps share the ground circuit with the stoplamps.

- DTC B2048 (Left Rear Turn Lamp Circuit Short to Ground) - is a continuous and on-demand DTC that sets when the SJB detects a short to ground on the LH rear turn signal voltage supply circuit.
- DTC B2049 (Left Rear Turn Lamp Circuit Open) - is an on-demand DTC that sets when the SJB detects an open or short to voltage on the LH rear turn lamp voltage supply circuit.
- DTC B2050 (Right Rear Turn Lamp Circuit Short to Ground) - is a continuous and on-demand DTC that sets when the SJB detects a short to ground on the RH rear turn lamp voltage supply circuit.
- DTC B2051 (Right Rear Turn Lamp Circuit Open) - is an on-demand DTC that sets when the SJB detects an open or short to voltage on the RH rear turn lamp voltage supply circuit.
- DTC B2A27 (Right Front Turn Lamp Circuit Open) - 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 (Right Front Turn Lamp Circuit Short to Ground) - 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 (Left Front Turn Lamp Circuit Open) - 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 (Left Front Turn Lamp Circuit Short to Ground) - 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.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Bulb holder
- Rear lamp jumper harness
- SJB

M1-M6:

M6-M8:

M8 Continued:

M9-M10: