Standard Ignition AS389 Manifold Absolute Pressure Sensor

Overview of Standard Ignition AS389 Manifold Absolute Pressure Sensor

The Standard Ignition AS389 Manifold Absolute Pressure (MAP) Sensor is designed for precise monitoring of engine manifold pressure in select Toyota vehicles. This sensor ensures accurate data transmission to the engine control unit, supporting optimal engine performance and emission control.

• Compatible with Toyota Celica, Corolla, and Matrix models
• Three-terminal design with male blade terminals for reliable connectivity
• Female connector with a single plug-in type, featuring round and rectangular shapes
• Single vacuum port and one port quantity for accurate pressure measurement
• Durable black finish for corrosion resistance and long service life

Detailed Product Description

The Standard Ignition AS389 MAP Sensor features a three-terminal configuration with male blade terminals that connect securely to the vehicle’s wiring harness via a female plug-in connector. The connector is designed with both round and rectangular shapes to ensure a proper fit and stable electrical connection. This sensor includes one vacuum port, which is essential for measuring the absolute pressure inside the intake manifold. The black color finish provides durability against environmental factors. Note that this part does not include hardware, mounting brackets, O-rings, or a wiring harness, so these components must be sourced separately if needed.

Applications and Common Issues Addressed

• Helps resolve engine performance problems related to incorrect manifold pressure readings
• Assists in correcting rough idling and stalling issues in Toyota Celica, Corolla, and Matrix models
• Supports emission control by providing accurate data to the engine control unit
• Can address poor fuel economy caused by faulty MAP sensor signals
• Helps prevent check engine light triggers related to manifold pressure sensor faults

Installation Notes and Tips

• Ensure the connector is securely plugged in with the correct orientation of the round and rectangular shapes
• Verify the vacuum port is properly connected to the intake manifold vacuum line
• Check for any vacuum leaks around the port to maintain sensor accuracy
• Since hardware and mounting brackets are not included, retain original mounting components or acquire compatible replacements
• Disconnect the battery before installation to avoid electrical shorts

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The AS389 MAP Sensor undergoes rigorous quality control to ensure reliable performance in Toyota Celica, Corolla, and Matrix vehicles. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in material and workmanship. Consult the product documentation or supplier for exact warranty terms.