Normal Operation

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

The Liftgate/Trunk Module (LTM) receives battery voltage at all times through circuit SBP14 (BN/RD) and SBB59 (BU/RD). Ground is provided to the LTM through circuit GD149 (BK/GY).

During power opening and/or power closing operation, the LTM receives inputs from the following system components:

Power liftgate control switch (instrument panel), power liftgate close switch (quarter trim panel) through circuit CPR63 (GY/YE) or Remote Keyless Entry (RKE).
Pinch strip through circuit CPR51 (YE/OG) (RH) and circuit CPR52 (YE/VT) (LH). The pinch strip switches are grounded through the LTM through circuit RPR52 (VT/GY).
Position sensor through circuit VPR53 (BU/WH) and VPR54 (BU/BN). The position sensor receives 5 volts from the LTM through circuit CPR55 (GN/BU) and ground from the LTM through circuit RPR55 (WH/BU).
Detent switch through circuit CPR66 (GY/YE).
Forkbolt primary switch through circuit CPR64 (VT/OG).
Forkbolt secondary switch through circuit CPR65 (BU/GN).
Sector gear close switch through circuit CPR67 (VT).
Sector gear open switch through circuit CPR68 (YE).

During power opening and/or power closing operation, the LTM provides output to the following system components:

Power liftgate clutch through circuit CPR69 (BN/BU). Ground is provided to the clutch through circuit GD149 (BK/GY).
Power liftgate motor through circuit CPR57 (GN/WH) and circuit CPR58 (GN/OG).
Power liftgate cinch motor through circuit CPR61 (BN) and circuit CPR62 (WH/BU).
Power liftgate chime through circuit CPR56 (VT/BN) and circuit RPR56 (GY/VT).

For detailed description of normal operation, refer to PRINCIPLES OF OPERATION .

DTC DESCRIPTION CHART

DTC Description	Fault Trigger Conditions
B106E - Solid State Driver Disabled due to Short Circuit	This DTC sets when the LTM detects a short to ground in the actuator clutch power circuit. The power liftgate will be disabled until this DTC is cleared (unless LTM DTC B106F is also present).
B106F - Module Disabled Due to External Fault	This DTC sets when the LTM detects a short to ground in the actuator clutch power circuit repeatedly. This DTC cannot be cleared. REFER to the LIFTGATE/TRUNK MODULE (LTM) DTC CHART .
B117A - Latch Motor Circuit Short to Ground	This DTC sets when the LTM detects a short to ground in the latch motor circuit(s).
B117B - Latch Motor Circuit Open	This DTC sets when the LTM detects an open in the latch motor circuit(s).
B1179 - Latch Motor Circuit Short to Battery	This DTC sets when the LTM detects a short to battery in the latch motor circuit(s).
B2418 - Sensor Power Short to Ground	This DTC sets when the LTM detects a short to ground on the position sensor 5 volt power circuit.
B2419 - Sensor 1 Invalid	This DTC sets when the LTM detects the position sensor feedback signals are not correct.
B2420 - Sensor 2 Invalid	This DTC sets when the LTM detects the position sensor feedback signals are not correct.
B2552 - Vbatt. 2 Circuit Open	This DTC sets when the LTM does not detect battery voltage on the high current power feed circuit.
B2819 - Gate Motor Circuit Short to Battery	This DTC sets when the LTM detects a short to battery in the power liftgate motor circuit(s).
B2908 - Latch Switch Invalid	This DTC sets when the LTM detects the liftgate is not in the fully latched (primary) position at the beginning of Self-Test. This DTC may also be set if the LTM does not detect a change in the latch status during latch releasing/cinching.
B2935 - Drive Unit Failure	This DTC sets when the time to complete a LTM Self-Test cycle (power open and power close to fully latched position) exceeds 20 seconds.
B2936 - Gate Motor Open	This DTC sets when the LTM detects an open in the power liftgate motor circuit(s).
B2937 - Gate Motor Short to Ground	This DTC sets when the LTM detects a short to ground in the power liftgate motor circuit(s).
B2939 - Gate Clutch Short to Ground or Open	This DTC sets when the LTM detects an open or short to ground in the actuator clutch power circuit.

This pinpoint test is intended to diagnose the following:

Fuse(s)
Wiring, terminals or connectors
Power liftgate latch
Motor/clutch assembly
LTM
Power liftgate rod