starter 23300-JN00B，S114936，S114936A，S114936B STH3936BA STH3936RD STH3936ZL STH3936WA 23300JN00A 23300JN00A FOR Nissan TeanaJ32 V6 2.5 2008-2013

The following are the general installation steps and precautions for the Nissan 12V starter motor: Preparation before installation •  Confirm model matching: Carefully check whether the model of the new starter motor matches the requirements of the vehicle, ensuring that it is compatible with your Nissan model to avoid failure to install or use normally due to model mismatch.  •  Prepare tools: Prepare tools such as wrenches and screwdrivers. For example, a 12mm box-end wrench, 10mm wrench, Phillips screwdriver, a small socket wrench with a short extension rod and an 8mm socket may be needed. The specific tools can be adjusted according to the actual vehicle model and installation situation.  •  Clean the installation area: Clean the area around the starter motor's installation position, removing dust, debris, oil stains, etc., to create a clean installation environment for the new starter motor and prevent impurities from affecting the installation and normal operation of the starter motor.Disconnect the power supply: For safety reasons, first turn off the vehicle's engine. Then use a wrench or socket to loosen the fixing bolt of the negative cable of the battery. Disconnect the negative cable from the battery and place it in a position where it will not come into contact with the battery to prevent short circuits during the installation process.Installation Steps •  Locate the starter motor: The starter motor of Nissan vehicles is usually located near the junction of the engine and the transmission. The specific position may vary slightly among different models, but it is generally at the bottom or side of the engine compartment, relatively close to the transmission.  •  Remove relevant components (if necessary): If the installation position of the starter motor is blocked by components such as the air filter or intake pipe, these components need to be removed first to obtain sufficient operating space. For automatic transmission models, it may be necessary to remove the air filter and pipes, etc.; for manual transmission models, this step may not be required.Disconnect the electrical connections of the old starter: Locate the wire harness plugs and wires on the starter, then unplug them from the starter or remove them by loosening the fixing nuts. Some starters may have multiple connection plugs or wires; be sure to mark them properly to facilitate correct installation later and avoid wrong connections.  •  Remove the fixing bolts of the old starter: Use an appropriate socket and wrench to unscrew the fixing bolts of the starter. Generally, a starter has 2 or 3 fixing bolts. After unscrewing all these bolts, the old starter can be taken out from the junction of the engine and the transmission.  •  Clean the installation position: After removing the old starter, clean the mounting surface of the starter again to remove residual impurities, oil stains, rust, etc. Ensure the mounting surface is flat and clean, so that the new starter can fit tightly with the mounting surface after installation, ensuring good heat dissipation and power transmission.Install the new starter: Align the new starter with the installation position, gently place it at the connection between the engine and the transmission, and align the mounting holes of the starter with the bolt holes at the installation position. Then insert the fixing bolts, and tighten them to the specified torque using a socket and wrench to ensure the starter is securely installed. The torque requirements for the starter fixing bolts may vary among different vehicle models, and they are generally clearly specified in the repair manual. If there is no manual, do not over-tighten to avoid causing the bolts to strip or the starter housing to deform.  •  Connect the electrical circuits: Correctly connect the previously disconnected wire harness plugs and wires to the new starter according to the marks, ensuring the plugs are fully inserted, the wires are securely connected, and the nuts are tightened to ensure smooth current flow through the starter.Restore relevant components (if removed): If components such as the air filter and intake pipe were removed earlier, they should now be reinstalled in their original positions in the correct order and manner, ensuring they are securely fastened.  •  Reconnect the negative battery cable: Align the negative battery cable with the negative battery terminal, insert it, and tighten the fixing bolt to ensure a secure connection between the negative cable and the negative battery terminal.Post-installation Testing •  Check Installation Status: Recheck whether the fixing bolts of the starter are tightened, whether the electrical wiring connections are secure, and whether there are any interferences from other components around or any parts that are not installed in place.  •  Start-up Test: Get into the car, insert the key, turn it to the start position, listen to see if the starter can operate normally and if there are any abnormal noises. At the same time, feel whether the starting process is smooth and if there are any abnormal vibrations. If the starter can normally drive the engine to start, runs smoothly, and has no abnormalities, it indicates that the installation is successful. If there is a problem, promptly check whether it is due to incorrect installation steps or a fault in the starter itself, and carry out corresponding repairs.

When installing the Nissan 12V starter motor, in addition to the key points mentioned in the above installation steps, the following precautions need to be noted: •  Avoid component damage: It is strictly forbidden to strike the starter motor with a hammer or wrench. The internal structure of the starter motor is precision-made, and striking may cause deformation or damage to the components, affecting its performance and service life. During the installation process, handle with care to avoid collision between the starter motor and other components.  •  Follow the installation sequence: Strictly follow the specified steps for installation. For example, first disconnect the negative cable of the battery before performing other operations; during installation, proceed in the reverse order. The connection of wires must also be done in the correct sequence and method to prevent incorrect connections from causing the starter motor to fail to work properly or damaging the vehicle's electronic devices.Ensure clean installation: During the installation process, keep the starter and its installation position clean. Avoid dust and debris from entering the interior of the starter, as this may affect the normal operation of the starter and even cause increased wear of components. Ensure firm connections: The fixing bolts of the starter should be tightened to ensure that the starter does not loosen during operation, but they should not be over-tightened to avoid bolt thread stripping or deformation of the starter housing. At the same time, the wire connections must be firm and reliable, plugs should be fully inserted, and nuts should be tightened to ensure smooth current flow.Check the status of components: Before installing a new starter motor, carefully inspect the starter motor for any external damage, check if it rotates smoothly, and see if the gears are worn, etc. If any issues are found with the starter motor, it should be replaced in a timely manner to avoid malfunctions after installation.  •  Test the operation: After installation, start the vehicle for testing to observe whether the starter motor can start the engine normally and if there are any abnormal noises or vibrations. At the same time, note that the duration of each starter motor activation should not exceed 5 seconds, and the interval between consecutive starts should be maintained at 10-15 seconds. If the engine fails to start after three consecutive attempts, the engine fault should be checked.

References：Regarding the content of the precautions for installing the Nissan 12V starter, the following materials were mainly referenced: • Autohome: Multiple Q&A pages on Autohome, such as What issues need attention when replacing a starter?, What should be noted when replacing a starter motor?, and What precautions should be taken when replacing a starter, mentioned precautions such as avoiding tapping the starter, following installation steps, controlling the interval between startup times, keeping it clean and dry, and ensuring secure connections, which provided important references for me to organize the relevant content.Pacific Auto Network: Articles such as How to Remove and Install a Starter Motor and How to Properly Install a Starter Motor emphasize key points such as handling with care during installation to avoid damaging wires, and conducting tests after installation. These contents have also been incorporated into the precautions I provided.  •  Nissan Automobile Repair Manual: Reference was made to the relevant official repair manuals of Nissan automobiles, which contain specifications and precautions for starter motor installation, such as regulations on the torque of mounting bolts. Although the specific expressions may vary according to different vehicle models, the overall installation principles and key points are consistent, providing a basis for the contents mentioned in the installation precautions, such as bolt tightening and wire connection.