Test I: One Or More Stoplamps Are Inoperative

PINPOINT TEST I: ONE OR MORE STOPLAMPS ARE INOPERATIVE

Normal Operation - Taurus, Taurus X
The stoplamp switch is supplied voltage through circuit SBP02 (YE/RD) from the SJB. When the brake pedal is applied, the stoplamp switch routes voltage to the SJB and the high mounted stoplamp through circuit CCB08 (VT/WH). The SJB then provides voltage to the LH and RH rear lamps through circuits CLS18 (GY/BN) and CLS19 (VT/OG), respectively.

Ground for the high mounted stoplamp and the LH rear lamp is provided through circuit GD147 (BK/VT). Ground for the RH rear lamp is provided through circuit GD148 (BK/YE).

Normal Operation - Sable
The stoplamp switch is supplied voltage through circuit SBP02 (YE/RD) from the SJB. When the brake pedal is applied, the stoplamp switch routes voltage to the rear lamps and the high mounted stoplamp through circuit CCB08 (VT/WH).

Ground for the high mounted stoplamp and the LH rear lamp is provided through circuit GD147 (BK/VT). Ground for the RH rear lamp is provided through circuit GD148 (BK/YE).

- DTC B2044 (Left Rear Stop 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 stop/turn lamp voltage supply circuit.

- NOTE: On the Taurus X, DTC B2045 sets even when the rear lamp operates correctly. The LED rear lamp does not draw enough current and the SJB faults this as an open condition. A visual inspection is required to make sure the lamp is operating correctly.

DTC B2045 (Left Rear Stop Lamp Circuit Open) - is an on-demand DTC that sets when the SJB detects an open on the LH rear stop/turn lamp voltage supply circuit.

- DTC B2046 (Right Rear Stop 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 stop/turn lamp voltage supply circuit.

- NOTE: On the Taurus X, DTC B2047 sets even when the rear lamp operates correctly. The LED rear lamp does not draw enough current and the SJB faults this as an open condition. A visual inspection is required to make sure the lamp is operating correctly.

DTC B2047 (Right Rear Stop Lamp Circuit Open) - is an on-demand 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
- Rear lamp assembly
- Rear lamp jumper harness
- High mounted stoplamp
- SJB

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I5-I8:

I8-I9:

I9-I11:

I11-I12:

I13-I15: