Trunk Lid Release Switch on 2009 cts not working

Do you know how the system works ? Do you know what a wiring diagram is an how to test electrical circuits with a DVOM - digital volt ohmmeter ? This is how to find the problem .
Circuit/System Description
When the ignition is ON, the body control module (BCM) supplies a signal to the rear compartment lid release switch through the trunk release switch signal circuit. When the rear compartment lid release switch is pressed, the voltage within the signal circuit is pulled low and in response, the BCM applies ground to the trunk release relay control circuit, which energizes the coil side of the trunk relay. The switch side of the trunk relay then closes, supplying battery positive voltage through the relay and the latch motor voltage control circuit to the rear compartment lid latch. The rear compartment lid latch, then releases the rear compartment lid so that it may be manually raised to an open position.
Circuit/System Testing
Ignition OFF, disconnect the harness connector at the rear compartment lid release switch.
Test for less than 1 ohm between the ground circuit terminal B and ground.
? If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool Trunk Switch parameter is Inactive.
? If not the specified value, test the signal circuit terminal A for a short to ground. If the circuit tests normal, replace the BCM.
Install a 3A fused jumper wire between the signal circuit terminal A and the ground circuit terminal B. Verify the scan tool Trunk Switch parameter is Active.
? If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the rear compartment lid release switch.
Component Testing
Ignition OFF, disconnect the harness connector at the rear compartment lid release switch.
Test for infinite resistance between the signal terminal A and the ground terminal B with the switch in the open position.
? If not the specified value, replace the rear compartment lid release switch
Test for less than 2 ohms of between the signal terminal A and the ground terminal B with the switch in the closed position.
? If greater than the specified range, replace the rear compartment lid release switch.
Test for infinite resistance between each terminal and the lid release switch housing/case.
? If not the specified value, replace the rear compartment lid release switch.
hooking up a factory or some other type professional scan tool an checking for DTC'S - diagnostic trouble codes should also be done , could make diagnoses easier .
DTC B2730 (Sedan)

Have you got the valet switch turned on?

You can fold either side of the rear seatback down for more cargo space.
To lower the rear seatback, follow these steps:

Open the trunk and pull one or both of the small handles located in the center of the trunk.
Once the handle is pulled, the seatback can be pushed open through the trunk, or pulled open from the inside of the vehicle.

Sorry ,but you need the trunk open ! What's wrong with your's ? loose your key . trunk release inside the vehicle doesn't work .
Luggage Compartment
Your best bet , have a qualified repair shop check it out . May have DTC'S diagnostic trouble codes stored .
DTC B3267: Trunk Release Output Circuit Low
DTC B3268: Trunk Release Output Circuit High

The rear compartment release circuit consists of the following:
• The intergrated body control module (IBCM) fuse
• The rear compartment lid release relay
• The rear compartment lid lock release actuator
• The rear compartment lid release switch
• The cargo lamp/trunk ajar switch
The rear compartment release circuit operates as follows. Battery positive voltage is applied at all times to the rear compartment lid release relay. The rear compartment lid release relay is energized by either depressing the rear compartment lid release switch, or when the IBCM receives a rear compartment release signal from a key fob. The IBCM then provides a path to ground on the rear compartment lid release relay control circuit, energizing the rear compartment lid release relay. When the rear compartment lid release relay is energized, battery positive voltage is supplied to the rear compartment lid lock release actuator causing the actuator to energize releasing the rear compartment lid. The rear compartment may be released with the dash mounted rear compartment release switch. The ignition must be in the OFF or ACCESSORY positions for the rear compartment to be released with a keyless entry transmitter fob (RFA). The rear compartment may also be released by an OnStar commanded using RFA functionality.

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.

Voltage is applied at all times through the TRUNK REL/RFA fuse to the rear compartment lid release switch and the switch side of the rear compartment lid release relay. When the release switch is pressed, the following actions occur:
• The switch closes.
• Voltage is applied to the coil side of the rear compartment lid release relay.
When the transaxle is in PARK or NEUTRAL, the rear compartment lid release relay is grounded through the transaxle range switch. With the coil side of the relay energized, the relay contacts close, applying voltage to the rear compartment lid release motor.
If the vehicle is equipped with remote entry, the switch operation is the same, except when the contacts in the rear compartment lid release relay close, voltage is applied through the normally closed contacts of the remote control door lock receiver. This action occurs in order to apply voltage to the rear compartment lid release motor.

Can you check fuse's , relay ? Both are located in the left insturment panel fuse box . Fuse Block - Left I/P
On the left side of the I/P
you need to open the drivers door to get to it ,on very end of the insturment panel .
Do you know anything about relay's , how they work ? If you pull the relay out of the fuse box an look on the bottom you will see four set's of numbers . 30 & 87 . if you took a piece of wire an jumped were this pins plug into the fuse box the trunk would open . provided there is B+ voltage at pin 30 .
There are videos on youtube showing how to test relays and their circuits .

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

Hi Jeff,
I was going to say, check fuse/ jump the load side of relay Good post.

How about a key ?

Luggage Compartment Description and Operation (Sedan)
Rear Compartment Lid Release
The rear compartment lid can be released in one of three ways:
• Inserting the key into the key lock cylinder, if equipped
• Operating the rear compartment lid release switch
• Using the keyless entry fob
To operate rear compartment lid with the rear compartment lid release switch or with the rear compartment release button on the key fob, the gear selector may be in any position, but vehicle speed must equal 0 for the rear compartment lid to release.
When the rear compartment lid release switch is pushed, the rear compartment lid release signal circuit to the body control module (BCM) is grounded. BCM then grounds the coil side of the trunk release relay through the trunk release relay control circuit. With this voltage is applied to the rear compartment lid release actuator, opening the rear compartment.

do you know how to do electrical testing ?

Circuit/System Verification
Ignition ON, observe the scan tool Trunk Release Switch parameter while pressing and releasing the rear compartment lid release switch. The parameter should change between Active and Inactive.
? If the parameter does not change, refer to Trunk Release Switch Malfunction.
Command the trunk release with a scan tool, the rear compartment lid latch should release the trunk lid.
? If the rear compartment lid latch does not release, refer to Rear Compartment Lid Latch Malfunction

You may want to take it to a repair shop .

2008 Altima2.5S Trunk wont open GRRRRRR - Nissan Forums : Nissan Forum

www.nissanclub.com/.../2007...nissan-altima.../298533-2008-altima2-5s-...
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According to WIS, the remote boot release is directly connected to the PSE via CAN
The pneumatic system equipment makes vacuum or pressure available for the following systems:Central locking (CL), (pressure, vacuum)Remote trunk release (RTR), (pressure)- actuation via remote trunk release switch or via radio
AD80.20-P-2002-02B Remote trunk release, general notes on Models 202.01/02/12/12 as of 1.6.97,diagnosis, advanced information, RTR 208, 210 as of 1.3.97, 210.081Actuation of PSE control module:The remote trunk release switch (N72s15) is connected to the PSE control module (combined) (A37) via CAN data buses. The remote trunk release radio signal from the key is conveyed to the overhead control panel control module (N70) via theantenna. This transmits the signal to the electronic ignition switch control module (N73) via CAN data buses. If a valid signal is recognized there the PSE control module (combined) (A37) is actuated via CAN data buses. The remote trunk release IR signal from the key is conveyed to the respective door control module (N69/1, N69/2) via the IR receivers (A26/1, A26/2). This transmits the signal to the electronic ignition switch control module (N73) via CAN data buses. If a valid signal is recognized there the PSE control module (combined) (A37) is actuated via CAN data buses.
If the trunk lid is unlocked the LED in the remote trunk releaseswitch (N72s15) is actuated by the PSE control module (combined)(A37) via CAN data buses.
Special features on model 208.4 (Cabriolet)The trunk lid cannot be released remotely with the transmitter key.The rollover bar (RB)/soft top operation control module (N52)signals via the CAN interior data bus whether the soft top is lockedor unlocked or the power soft top switch (S84) is operated. As long as the CAN message reads:"Power soft top switch (S84) operated" or"soft top unlocked"the trunk lid cannot be released remotely.

Pneumatics testingPermissible leakage in complete system at:vacuum of 300 mbar within 1 minute: 30 mbarPermissible leakage of actuators with lines at:vacuum of 300 mbar within 1 minute: 25 mbar
Thanks