Nissan 90550-AU10A Trunk Lock Actuator Motor Instruction Manual

1. Product Overview

This manual provides essential information for the installation, operation, and maintenance of the Nissan 90550-AU10A Trunk Lock Actuator Motor. This component is a genuine Nissan replacement part designed to ensure proper fit, form, and function in compatible vehicles.

The trunk lock actuator motor is responsible for the electronic locking and unlocking mechanism of your vehicle's trunk lid. A properly functioning actuator is crucial for vehicle security and convenience.

2. Product Identification

Figure 1: Nissan 90550-AU10A Trunk Lock Actuator Motor. This image displays the Nissan 90550-AU10A Trunk Lock Actuator Motor, clearly showing the part number and brand logo. It is a genuine Nissan replacement component.

Verify that the part number on your component matches 90550-AU10A to ensure compatibility with your vehicle.

3. Installation (Setup)

Disclaimer: Installation of automotive parts can be complex and may require specialized tools and knowledge. If you are not confident in your ability to perform this installation, it is recommended to seek assistance from a qualified automotive technician.

Required Tools (Typical):

• Socket wrench set
• Screwdriver set (Phillips and flathead)
• Trim removal tools (plastic pry tools)
• Work light
• Safety glasses and gloves

Installation Steps (General Guide):

1. Safety First: Ensure the vehicle is parked on a level surface with the parking brake engaged. Disconnect the negative terminal of the vehicle's battery to prevent accidental electrical shorts.
2. Access the Trunk Lid Interior: Open the trunk. Carefully remove any interior trim panels covering the trunk lid's inner structure. This usually involves removing clips, screws, or fasteners. Use trim removal tools to avoid damaging the panels.
3. Locate the Existing Actuator: Identify the old trunk lock actuator motor. It is typically mounted near the trunk latch mechanism.
4. Disconnect Electrical Connector: Carefully disconnect the electrical wiring harness from the old actuator.
5. Remove Mounting Hardware: Unscrew or unbolt the old actuator from its mounting points. Note the orientation and any linkages connected to it.
6. Disconnect Linkages: Detach any mechanical linkages (rods or cables) connecting the actuator to the trunk latch.
7. Install New Actuator: Position the new Nissan 90550-AU10A actuator in place. Reconnect any mechanical linkages, ensuring they move freely.
8. Secure Mounting Hardware: Fasten the new actuator using the original screws or bolts. Ensure it is securely mounted and does not wobble.
9. Reconnect Electrical Connector: Plug the electrical wiring harness firmly into the new actuator.
10. Test Functionality: Before reassembling the trim, reconnect the vehicle's battery. Test the trunk lock and unlock function using the key fob and/or interior release button. Ensure the trunk latches and releases smoothly.
11. Reassemble Trim: Once confirmed operational, reattach all interior trim panels in reverse order of removal.

4. Operation

The Nissan 90550-AU10A Trunk Lock Actuator Motor operates automatically in conjunction with your vehicle's central locking system. When you lock or unlock your vehicle using the remote key fob, the key in the door lock, or the interior lock/unlock button, the actuator receives an electrical signal to engage or disengage the trunk latch mechanism.

• Locking: Upon receiving a lock signal, the actuator moves a rod or lever to secure the trunk latch, preventing it from opening.
• Unlocking: Upon receiving an unlock signal, the actuator moves to release the trunk latch, allowing the trunk to be opened manually or via its release button.

Ensure there are no obstructions in the trunk latch area that could impede the actuator's movement.

5. Maintenance

The Nissan 90550-AU10A Trunk Lock Actuator Motor is designed for long-term reliability and typically requires minimal maintenance. However, periodic checks can help ensure its continued proper function:

• Inspect Linkages: Periodically check the mechanical linkages connected to the actuator for any signs of wear, corrosion, or looseness. Ensure they move freely without binding.
• Clean Latch Area: Keep the trunk latch mechanism clean and free of dirt, debris, or ice, which can interfere with the actuator's operation.
• Lubrication: A light application of automotive-grade grease or silicone spray to the moving parts of the trunk latch mechanism (not directly on the actuator's electrical components) can help maintain smooth operation.
• Electrical Connections: Ensure the electrical connector remains securely attached and free from corrosion.

6. Troubleshooting

If you experience issues with your trunk lock actuator, consider the following common troubleshooting steps:

• Trunk Not Locking/Unlocking:
  • Check Fuses: Consult your vehicle's owner's manual for the location of the fuse box and the fuse responsible for the trunk lock system. A blown fuse can prevent the actuator from receiving power.
  • Inspect Wiring: Look for any visible damage, cuts, or loose connections in the wiring harness leading to the actuator.
  • Remote Key Fob Battery: Ensure your key fob battery is not depleted.
  • Manual Override: If your vehicle has a manual trunk release, try using it to determine if the latch itself is functional.
• Actuator Making Noise but Not Functioning: This could indicate a mechanical issue within the actuator itself or a problem with the linkages. Inspect linkages for binding or disconnection.
• Intermittent Operation: Loose electrical connections or a failing actuator motor can cause intermittent functionality.

If these steps do not resolve the issue, professional diagnosis by a qualified technician may be necessary.

7. Specifications

8. Warranty and Support

This product is a genuine Nissan part. For specific warranty information, please refer to the warranty documentation provided with your purchase or contact an authorized Nissan dealership or customer support. General support for installation or troubleshooting should first refer to your vehicle's service manual or a qualified automotive technician.

For further assistance, please contact Nissan customer service or visit their official website.