Trouble light for engine compartment lid is lit when lid is shut

Could be any number of thing's . Does it start back up right away ? When does it do it ,after driving awhile when the vehicle is warmed up . Or cold ? Checking engine light lit , any DTC'S - diagnostic trouble codes stored ?

Will a scan tool communicate with the PCM / ECM - engine computer ? Any DTC'S - diagnostic trouble code's ? Security light lit on the instrument cluster ? Anti-theft system problem will disable the fuel injectors .

Luggage Compartment Lid
The luggage compartment lid module receives a voltage signal from the driver door module (DDM) when either the button on the driver door trim panel, the keyless entry keypad, or the transmitter is pressed (twice on the transmitter). Voltage is then supplied to the luggage compartment lid latch, opening it. Using the luggage compartment lid key operates the latch mechanically, resulting in manual-only operation of the lid. There are two switches in the latch. One is monitored by the luggage compartment lid module to sense if the latch is closed. The other switch in the latch is monitored by both modules (LCM and luggage compartment lid module) and is used for disabling the anti-theft system, which is contained within the LCM. The luggage compartment lid module powers the lid motor to move the lid to the full-open position when it senses the latch has been opened. Optical sensors within the lid motor are monitored by the module to determine when to turn off power and which circuits should be powered or grounded to the lid motor. When one of the buttons is depressed with the lid open, the DDM sends a signal to the luggage compartment lid module which powers and grounds the correct circuits to the lid motor and lowers the lid until the latch closes. The module senses the latch closing through the lid latch switch that is monitored. At this time, the module powers the closing motor, slowly pulling the lid to a fully closed position. Two switches within the closing motor are monitored by the module to determine when the closing motor is fully down or up. The module has a vehicle speed output (VSO) (circuit 679) signal that is used to shut down the system if there is a VSO of approximately 5 kph (3 mph) or more. For diagnostics, the module uses the ISO-9141 circuit 70 that is included in the DLC (data link connector). Whenever battery power is lost to the luggage compartment lid module, luggage compartment lid motor or the luggage compartment lid closing motor; the system must be initialized.

NOTE: The luggage compartment lid motor is equipped with an optical sensor that the module uses to determine if the lid is closing on foreign materials based on lid speed. If the module detects this occurring, power and ground will be reversed to the lid motor and the lid will open.

1. Verify the customer concern by operating the luggage compartment lid using the four different methods (driver door trim panel button, transmitter button, keyless entry keypad and key) to duplicate the concern.

1. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart Mechanical Electrical

• Luggage compartment lid motor
• Luggage compartment lid closing motor
• Luggage compartment lid latch
• Luggage compartment lid and hinges

• Battery junction box (BJB) fuse(s):
  • 109 (40A)
  • 1 (30A)
• Central junction box (CJB) fuse(s):
  • 30 (7.5A)
  • 14 (7.5A)
• Circuitry

1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step. Verify the two grounds (G204, G401) are clean, tight and free from corrosion. Remove and clean to make sure.

1. Monitoring the PIDS in the luggage compartment lid module can verify the DDM is sending the lid-open signal to the lid module. They can also be used to determine if the latch switches, the lid switches and the lid motor sensors are all providing the luggage compartment lid module with the correct and necessary information to operate the system. The VSO input can shut the system down if there is a signal indicating 5 kph (3 mph) or more.

1. If the electrical lid operation is ok, but the key is ineffective, refer to Section 501-14 .

1. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) located under the instrument panel and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
   • check that the program card is correctly installed.
   • check the connections to the vehicle.
   • check the ignition switch position.
   • If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.

1. Carry out the DATA LINK DIAGNOSTIC TEST. If the diagnostic tool responds with:
   • CKT 914, CKT 915 or CKT 70 = ALL ECUs NO RESP/NOT EQUIP, refer to Section 418-00 .
   • NO RESP/NOT EQUIP for luggage compartment lid module, Go To Pinpoint Test A .
   • SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the luggage compartment lid module.

1. If the DTCs retrieved are related to the concern, go to the luggage compartment lid module Diagnostic Trouble Code (DTC) Index to continue diagnostics. For lighting control module (LCM) concerns, refer to Section 419-10 for a complete DTC index.

1. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart. Luggage Compartment Lid Module Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1342 ECU is Defective Luggage compartment lid module INSTALL a new luggage compartment lid module. B1359 Input Low When Key in RUN/START Position Luggage compartment lid module Go To Pinpoint Test A . B1551 Latch/Lid Release Circuit Failure Luggage compartment lid module Go To Pinpoint Test C . B2418 Sensor Power Short to Ground Luggage compartment lid module Go To Pinpoint Test B . B2419 Sensor 1 Invalid Luggage compartment lid module Go To Pinpoint Test B . B2420 Sensor 2 Invalid Luggage compartment lid module Go To Pinpoint Test B . B2421 Vehicle Speed Sensor Circuit Failure Luggage compartment lid module Go To Pinpoint Test C . B2522 Vbatt 1 Circuit Failure Luggage compartment lid module Go To Pinpoint Test A . B2552 Vbatt 2 Open Luggage compartment lid module Go To Pinpoint Test A . B2698 Vbatt 2 Circuit Failure Luggage compartment lid module Go To Pinpoint Test A . B2703 OPEN CLOSE SW Input Stuck Active Luggage compartment lid module Go To Pinpoint Test B . B2718 Lid Ajar Output - Short to Battery Luggage compartment lid module Go To Pinpoint Test B . B2721 Lid Ajar Output Circuit Failure Luggage compartment lid module Go To Pinpoint Test B . B2748 Drive Motor Open Circuit Luggage compartment lid module Go To Pinpoint Test B . B2755 Drive Motor Short to Battery Luggage compartment lid module Go To Pinpoint Test B . B2757 Drive Motor Output Short to Ground Luggage compartment lid module Go To Pinpoint Test B . B2825 Obstacle Detection Path of Decklid Luggage compartment lid module Go To Pinpoint Test B . B2876 Striker Drive Short to Battery Luggage compartment lid module Go To Pinpoint Test D . B2877 Striker Drive Output Short to Ground Luggage compartment lid module Go To Pinpoint Test D . B2905 Striker Motor Open Circuit Luggage compartment lid module Go To Pinpoint Test D . B2906 Striker Up SW Input Invalid Luggage compartment lid module Go To Pinpoint Test D . B2907 Striker Down SW Invalid Luggage compartment lid module Go To Pinpoint Test D . B2908 Latch SW Input Invalid Luggage compartment lid module Go To Pinpoint Test B . B2910 Striker Up SW/Striker Down SW Mismatch Luggage compartment lid module Go To Pinpoint Test D . B5131 Clutch Circuit Failure Luggage compartment lid module Go To Pinpoint Test B . C1123 Vehicle Speed Sensor Circuit - Fault Luggage compartment lid module Go To Pinpoint Test C . Do you know what diagnostic trouble code's are ? That would be the first place to start , checking for code's . An seeing how you probably don't have a ford IDS - scanner . your best bet mite be to take it to a qualified ford - lincoln dealer

Do you know anything about automotive electronic's ? The trunk release is controlled by electronic control modules . Having the vehicle check for DTC'S - diagnostic trouble code's should be the first step in the diagnostic procedure . Then reading how it work's !
Factory service repair info.
Rear Compartment Lid Release System Components
• Body control module (BCM)
• Remote control door lock receiver
• Interior rear compartment lid release switch
• Exterior rear compartment lid release switch
• Rear compartment lid release actuator
• Trunk release relay

Rear Compartment Lid Release Operation
The interior rear compartment lid release switch receives a signal from the driver door switch assembly (DDSA). When the interior rear compartment lid release switch is activated, the signal circuit is pulled to ground. The DDSA interprets this and sends a GMLAN serial data message to the body control module (BCM) requesting the rear compartment lid be released. The BCM responds by applying battery voltage to the trunk release relay control circuit which energizes the TRUNK RELES relay. The trunk release relay is supplied with battery voltage at all times. With the relay coil energized, the relay switch contacts close allowing battery voltage to flow to the rear compartment lid release actuator causing the rear compartment lid to release. The rear compartment lid release actuator is permanently grounded at G402.

The trunk release relay is located in the rear fuse box located under the back seat.

Please have the computer scanned at your local parts store and post the trouble codes here.

The rear compartment lid release system consists of the following components:
• Body control module (BCM)
• Folding top cover actuator
• GMLAN serial data link
• Keyless entry transmitter
• Rear compartment lid ajar switch
• Rear compartment lid release actuator
• Rear compartment lid release switch
• Remote control door lock receiver (RCDLR)
• Trunk fuses
• Trunk release relay

Rear Compartment Lid Release System Operation
The rear compartment lid can be released by operating the rear compartment lid release switch or pressing the rear compartment lid release button on the keyless entry transmitter. When the rear compartment lid release switch is operated, the rear compartment lid release switch signal circuit to the body control module (BCM) is switched to ground. The BCM receives the rear compartment lid release switch input and applies ground to the trunk release relay control circuit. This energizes the trunk release relay coil, closing the switch side contacts, allowing battery voltage to be applied to the rear compartment lid release actuator and folding top cover actuator, releasing the buttresses and opening the rear compartment lid. Ground for the rear compartment lid release switch is provided at G300. The rear compartment lid ajar switch, rear compartment lid release actuator, and folding top cover actuator are provided ground at G301. The rear compartment lid will not release until the vehicle speed is zero and in park.

Do you know what DTC'S - diagnostic trouble codes are ?
DTC B3265 01 : Trunk Relay Output Short to Battery
DTC B3265 06 : Trunk Relay Output Short to Ground or Open

Do you know what a relay is an how it works ? TRUNK release relay located in the underhood fuse / relay box.
VEHICLE RELAYS Operation Diagnosis

Anti-theft problem ? Security light lit on the instrument cluster ? Have check for DTC'S - diagnostic trouble codes . The PCM - engine computer disables the fuel injectors .

Jason: It would appear to be a timing fault...However, your car is On Board Diagnostic I (OBDI) and trouble codes that are stored can not be scanned...Is the trouble light on the dash lit? If a trouble code is stored...In the lower left passenger foot well is a blue connector...Under the carpet...Pull it down and short the two pins with a paper clip...Turn the ignition to on but don't start the engine...The light on the dash will blink out a two digit code...ie...4 Long...And 1 short=Code 41...I'll need that code to diagnose the fault...Lastly; do you have a multimeter? send a comment please...Guru...saailer

I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

Fuse and relay box is under the bonnet, right rear of the engine compartment. Unclasp the lid at the front and hinge up, you will find the fuse is number 4 from the right side of the car. The layout of the fuse box should be on the lid.

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