STARTER MOTOR 17779 S114-801 M000T87181 23300-2Y900 233005Y710 233002Y900 233002Y900R 233005Y710 2-2062-HI S114801 S114801D S114801E M0T87181 for Maxima Infiniti I30 I35

I. Preparation and Tools

• Tools: Ratchet wrench, socket set (typically 10mm, 12mm, 14mm, 17mm - specific sizes vary by model), extension bar, torque wrench.

• Protection: Safety glasses, work gloves.

• Parts: New starter assembly, new mounting bolts (if required by the service manual), thread lock (recommended).

II. Installation Procedure (Standard 3-Step Method)

1. Mechanical Installation (Mounting the Starter)

• Positioning: Place the new starter onto the engine mounting surface. Ensure the drive pinion gear aligns with the flywheel ring gear and that the mounting holes are aligned.

• Pre-tightening: Thread the mounting bolts in by hand to ensure the threads engage smoothly without binding.

• Cross Tightening: Using a torque wrench, tighten the bolts in a crisscross sequence (e.g., left-right-center or diagonally) in several passes until the specified torque is reached.

• Note: Torque specifications vary by model, but generally range between 25 N·m and 40 N·m.

2. Electrical Connections (Wiring)

• Connect the Field Coil Terminal (S terminal / Small terminal):

• Locate the small terminal on the starter labeled "S" or "50".

• Connect the thin wire from the ignition switch (usually white or with a black stripe).

• Tighten the nut to ensure a secure connection.

• Connect the Battery Positive Terminal (B terminal / Large terminal):

• Locate the large terminal on the starter housing labeled "30" or "B".

• Connect the thick cable from the battery positive terminal (usually red).

• Tighten the nut securely to prevent loosening.

• Install Dust Cover: Many Nissan starters are equipped with a rubber or plastic dust cover for the large terminal. Always reinstall this to prevent oil, dirt, or dust from entering and causing a short circuit.

3. System Restoration and Testing

• Reconnect Battery: Reconnect the negative battery cable.

• Initial Test: Turn off all electrical loads (headlights, A/C, etc.), and turn the ignition switch to the "START" position.

• Normal Operation: The starter should run smoothly without harsh grinding noises, and the engine should start successfully.

• Abnormal Operation: If you hear a single "click" but the starter does not turn, check the S terminal for poor contact. If there is no sound at all, check the B terminal and the battery.

I. Safety & Taboos

• Action: When connecting the battery positive cable (Terminal B), it is strictly forbidden for the metal wrench to simultaneously touch the starter housing (ground).

• Consequence: A massive short-circuit spark will occur, which could instantly melt copper terminals, burn wiring harnesses, or even cause a battery explosion.

• Taboo: Never perform a "bump" test by shorting the S terminal and B terminal with a screwdriver if the main cable is disconnected.

• Action: The negative battery cable must be disconnected before performing any starter removal/installation or harness disconnection.

• Reason: Nissan vehicles are equipped with complex BCMs (Body Control Modules) and Immobilizer systems. Working with live current may cause the system to store false Diagnostic Trouble Codes (DTCs) or even trigger the immobilizer lockout, preventing the vehicle from starting.

• Action: A torque wrench must be used when installing the starter mounting bolts.

• Reason: Nissan starter housings are mostly made of magnesium-aluminum alloy or die-cast aluminum, which are relatively soft. The instantaneous impact force of an air wrench can easily strip the housing threads or crack the housing.

II. Key Parameters & Specifications

• Mounting Bolts: Typically 25 - 35 N·m.

• Specific Differences: VQ series engines (e.g., Teana, 350Z) are typically 32-34 N·m; HR series (e.g., Sylphy/Sentra, X-Trail/Rogue) are typically 25-28 N·m.

• Terminal Nuts:

• B Terminal (Main Power): 8 - 10 N·m.

• S Terminal (Signal): 4 - 6 N·m.

• Note: Over-tightening will crush the internal copper core of the terminal, causing high contact resistance and heat; under-tightening will result in weak cranking.

• Drive Gear (Pinion): Never apply grease or standard lithium-based lubricant.

• Correct Procedure: Keep it dry. Nissan starter overrunning clutches and gears are designed for "dry operation." Grease attracts dust, leading to jamming.

• Mounting Surface: If the old starter gasket (if equipped) is missing, do not arbitrarily apply sealant. This may cause an uneven mounting surface, leading to abnormal noise.

• Ensure the replacement starter cable gauge matches the OEM specifications. Some high-performance Nissan models (e.g., GT-R, 370Z) use thicker cables. An undersized wire will cause excessive voltage drop during cranking, resulting in a weak starter.

III. Installation Details & Error Prevention

• Action: Before installing the new starter, rotate the crankshaft and inspect the teeth of the flywheel ring gear.

• Judgment: If 3-4 consecutive teeth are found to be ground, chipped, or worn into a taper, the flywheel ring gear must be replaced. Failure to do so will cause immediate damage to the new starter and result in severe metal impact noise.

• Action: Always reinstall the red rubber dust cover on Terminal B (large terminal).

• Special Detail: Some Nissan models (those equipped with CVT transmissions) have an exhaust heat shield near the starter harness. Ensure the heat shield is reset during installation to prevent high temperatures from baking the harness and melting the insulation.

• Action: Although modern Nissan starters mostly use a "self-adjusting" mechanism, older body-on-frame models (e.g., older Patrol Y60/Y61, Cedric/Gloria Y31) require checking the clearance between the drive gear and the thrust washer.

• Standard: If adjustment shims are present, the clearance is typically between 0.5mm - 1.5mm.

References：

I. Core Authoritative Sources (Nissan OEM)

• Applicable Chapter: Engine → Starting and Charging → Starter Motor → Installation.

• Key Location Points: Contains core requirements such as installation torque, wiring order, flywheel ring gear inspection, prohibition of impact wrenches, and clearance specifications.

• Example: For the QR25DE engine, the mounting bolt torque is 32 N·m, and the Terminal B nut is 10 N·m.

• Access: Nissan ESM subscription, authorized dealer service systems, or model-specific physical/electronic manuals.

• Applicable Modules: Service Manuals (ESM), Technical Service Bulletins (TSB), and Parts Replacement Standards.

• Key Location Points: Installation steps, torque values, harness routing, and error-proofing tips for specific models (e.g., Altima, Sentra, Rogue), as well as TSB cases regarding starter noise or premature failure.

• Access: Nissan ESM official website (paid subscription required), authorized dealer internal systems.

• Applicable Topics: Official guidance on issues such as abnormal noise after installation, premature wear, or installation position deviation.

• Key Location Points: Supplements ESM details, such as clearance adjustments, bolt replacement requirements, or harness heat protection for specific production batches.

• Access: NHTSA database, Nissan ESM system, Technical Departments of authorized dealers, or third-party repair databases (e.g., Alldata, Mitchell1).

II. General Standards and Industry Norms

• ISO 9001 Automotive Service Standards: Covers general requirements for safety procedures, torque control, and parts inspection, aligning with Nissan OEM specifications.

• Nissan Global Service Operation Standards: Emphasizes safety and error-proofing principles such as disconnecting the negative battery terminal, cross-tightening bolts, and installing dust covers. This serves as the universal execution standard for manual content.

III. Verifiable Public References

• Third-party Manual Libraries (ManualsLib, OnlyManuals, etc.): Provide the Starting System chapters from the ESM for some Nissan models. Search for "Starter Motor Installation" or "Starting System" to obtain torque values and steps.

• Authorized Nissan Dealer Service Materials: Work instructions used by service technicians. These are identical to ESM/TSB content and can be verified through the Technical Department of a 4S dealership.