Milan, MKZ
WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
When the SJB detects the brake pedal applied, voltage is routed through the SJB to the stoplamp through circuit CLS17 (YE/GY). Ground for the stoplamp is provided through circuit GD171 (BK/GY).
The rear lamps contain electronics that modulate the voltage frequency to the LED bulbs.
| DTC Description | Fault Trigger Conditions |
|---|---|
| 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
- High mounted stoplamp
- Rear lamp assembly
- SJB