Delphi AS10345 Ignition Knock (Detonation) Sensor

Delphi Knock Sensor AS10345 Overview

Delphi AS10345 is an ignition knock sensor built for accurate detonation detection and OE-style signal output. It is a direct-fit sensor for select Toyota applications, including Corolla, Celica, and MR2 Spyder models, where precise engine knock feedback is critical for proper ignition control.

• Ignition knock (detonation) sensor for engine knock detection
• OE-calibrated and tested for accurate readings
• 1 male pin terminal with 1 rectangular connector
• Screw-mount design for direct replacement service
• Connector and terminal layout matched to the application
• Delphi AS10345 for select Toyota Corolla, Celica, and MR2 Spyder fitments

Detailed Product Information

Delphi AS10345 is part of Delphi’s sensor lineup, which is developed and validated to OE standards for consistent signal accuracy. This knock sensor monitors engine vibration patterns and sends data to the engine control system so timing corrections can be made when detonation is detected. For drivers and technicians servicing a Toyota Corolla, Toyota Celica, or Toyota MR2 Spyder, the AS10345 provides a direct replacement option with the correct connector shape, terminal count, and mounting style.

This part cross-references Standard Ignition KS111 for the same application.

Vehicle Fitment

• Fits 2000-2005 Toyota Celica, N/A
• Fits 2000-2005 Toyota MR2 Spyder, N/A
• Fits 1998-2002 Toyota Corolla, N/A

Common Issues This Sensor May Address

• Knock sensor fault codes related to detonation signal loss
• Erratic ignition timing caused by inaccurate knock feedback
• Reduced engine performance from failed or degraded sensor output
• Check engine light concerns tied to knock sensor circuit problems
• Driveability complaints linked to improper spark timing control

Installation Notes and Tips

Verify the connector style, terminal count, and screw-mount location before installation. Inspect the harness connector for corrosion, damaged pins, or loose fitment, and confirm the mounting surface is clean so the sensor can read engine vibration correctly. On Toyota Corolla, Celica, and MR2 Spyder applications, follow the vehicle service procedure for torque and diagnostic reset steps after replacement.

Quality Assurance

Delphi sensors are developed with OE validation methods and calibrated to OE standards to support accurate readings and consistent operation. That testing focus helps reduce repeat repairs and supports dependable replacement performance.