Normal Operation
WARNING: This page is about a different car, the 2008 Mercury Sable, 2008 Ford Taurus X, and 2008 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
If the power liftgate is operated from the power liftgate control switch (instrument panel), circuit CPR63 (GY/YE) is grounded by the open/close switch, which signals the Liftgate/Trunk Module (LTM) of the open/close request. If the power liftgate is operated from the rear switch (quarter trim panel), circuit CPR63 (GY/YE) is grounded by the rear switch through circuit GD148 (BK/YE). If the power liftgate is operated from the liftgate handle, the Smart Junction Box (SJB) sends a voltage signal to the LTM through circuit CPL10 (GN/WH).
| DTC Description | Fault Trigger Conditions |
|---|---|
| B2666 - Liftgate Release Switch Circuit Failure | This DTC sets when the SJB detects a short to ground on the liftgate release handle switch input circuit. |
| B273A - Liftgate Release Output Circuit Shorted to Ground | This DTC sets when the SJB detects a short to ground on the liftgate release handle switch output circuit. |
| B273B - Liftgate Release Output Circuit Open or Shorted to Battery Voltage | This DTC sets when the SJB detects a open or short to battery on the liftgate release handle switch output circuit. |
| B1105 - Rear Open/Close Switch Active During Self Test | This DTC sets when the LTM detects that the power liftgate rear control switch (quarter trim panel) is stuck active (or a short to ground is present in the circuit). |
| B2703 - Open/Close Switch Stuck Active | This DTC sets when the LTM detects that the power liftgate control switch (instrument panel) is stuck active (or a short to ground is present in the circuit). |
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Power liftgate control switch (instrument panel)
- Power liftgate rear control switch (quarter trim panel)
- LTM
- SJB