Liftgate Ajar Switch Circuit Failure
Table of contents
B2077 LINCOLN Possible Causes
- Faulty Liftgate Ajar Switch
- Liftgate Ajar Switch harness is open or shorted
- Liftgate Ajar Switch circuit poor electrical connection
- Faulty Smart Junction Box (SJB)
How do I fix code B2077 LINCOLN?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the B2077 LINCOLN code
The cost of diagnosing the B2077 LINCOLN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B2077 LINCOLN Description
The Smart Junction Box (SJB) sends a voltage signal to the liftgate ajar switch. The voltage signal passes through the liftgate ajar switch to the liftgate window ajar switch. The signal is then routed to ground.
The liftgate and the liftgate window ajar switches are wired in series and are monitored from a single circuit by the SJB . The liftgate and liftgate window ajar switches are closed when the liftgate and liftgate window are closed. When the liftgate or liftgate window is opened, the signal to ground is interrupted indicating an open liftgate or liftgate window (the SJB cannot determine which is open).